Merging upstream version 1.72.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 2104 insertions, 2751 deletions

diff --git a/vendor/rustix/src/net/addr.rs b/vendor/rustix/src/net/addr.rs
deleted file mode 100644
index ca87298e9..000000000
--- a/vendor/rustix/src/net/addr.rs
+++ /dev/null
@@ -1,641 +0,0 @@
-//! The following is derived from Rust's
-//! library/std/src/net/socket_addr.rs at revision
-//! bd20fc1fd657b32f7aa1d70d8723f04c87f21606.
-//!
-//! All code in this file is licensed MIT or Apache 2.0 at your option.
-//!
-//! This defines `SocketAddr`, `SocketAddrV4`, and `SocketAddrV6` in a
-//! platform-independent way. It is not the native representation.
-
-use crate::net::ip::{IpAddr, Ipv4Addr, Ipv6Addr};
-use core::cmp::Ordering;
-use core::hash;
-
-/// An internet socket address, either IPv4 or IPv6.
-///
-/// Internet socket addresses consist of an [IP address], a 16-bit port number, as well
-/// as possibly some version-dependent additional information. See [`SocketAddrV4`]'s and
-/// [`SocketAddrV6`]'s respective documentation for more details.
-///
-/// The size of a `SocketAddr` instance may vary depending on the target operating
-/// system.
-///
-/// [IP address]: IpAddr
-///
-/// # Examples
-///
-/// ```
-/// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-///
-/// let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-///
-/// assert_eq!("127.0.0.1:8080".parse(), Ok(socket));
-/// assert_eq!(socket.port(), 8080);
-/// assert_eq!(socket.is_ipv4(), true);
-/// ```
-#[derive(Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-pub enum SocketAddr {
-    /// An IPv4 socket address.
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    V4(#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] SocketAddrV4),
-    /// An IPv6 socket address.
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    V6(#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))] SocketAddrV6),
-}
-
-/// An IPv4 socket address.
-///
-/// IPv4 socket addresses consist of an [`IPv4` address] and a 16-bit port number, as
-/// stated in [IETF RFC 793].
-///
-/// See [`SocketAddr`] for a type encompassing both IPv4 and IPv6 socket addresses.
-///
-/// The size of a `SocketAddrV4` struct may vary depending on the target operating
-/// system. Do not assume that this type has the same memory layout as the underlying
-/// system representation.
-///
-/// [IETF RFC 793]: https://tools.ietf.org/html/rfc793
-/// [`IPv4` address]: Ipv4Addr
-///
-/// # Examples
-///
-/// ```
-/// use std::net::{Ipv4Addr, SocketAddrV4};
-///
-/// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-///
-/// assert_eq!("127.0.0.1:8080".parse(), Ok(socket));
-/// assert_eq!(socket.ip(), &Ipv4Addr::new(127, 0, 0, 1));
-/// assert_eq!(socket.port(), 8080);
-/// ```
-#[derive(Copy, Clone, Eq, PartialEq)]
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-pub struct SocketAddrV4 {
-    ip: Ipv4Addr,
-    port: u16,
-}
-
-/// An IPv6 socket address.
-///
-/// IPv6 socket addresses consist of an [`IPv6` address], a 16-bit port number, as well
-/// as fields containing the traffic class, the flow label, and a scope identifier
-/// (see [IETF RFC 2553, Section 3.3] for more details).
-///
-/// See [`SocketAddr`] for a type encompassing both IPv4 and IPv6 socket addresses.
-///
-/// The size of a `SocketAddrV6` struct may vary depending on the target operating
-/// system. Do not assume that this type has the same memory layout as the underlying
-/// system representation.
-///
-/// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
-/// [`IPv6` address]: Ipv6Addr
-///
-/// # Examples
-///
-/// ```
-/// use std::net::{Ipv6Addr, SocketAddrV6};
-///
-/// let socket = SocketAddrV6::new(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-///
-/// assert_eq!("[2001:db8::1]:8080".parse(), Ok(socket));
-/// assert_eq!(socket.ip(), &Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1));
-/// assert_eq!(socket.port(), 8080);
-/// ```
-#[derive(Copy, Clone, Eq, PartialEq)]
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-pub struct SocketAddrV6 {
-    ip: Ipv6Addr,
-    port: u16,
-    flowinfo: u32,
-    scope_id: u32,
-}
-
-impl SocketAddr {
-    /// Creates a new socket address from an [IP address] and a port number.
-    ///
-    /// [IP address]: IpAddr
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)));
-    /// assert_eq!(socket.port(), 8080);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))]
-    #[must_use]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn new(ip: IpAddr, port: u16) -> SocketAddr {
-        match ip {
-            IpAddr::V4(a) => SocketAddr::V4(SocketAddrV4::new(a, port)),
-            IpAddr::V6(a) => SocketAddr::V6(SocketAddrV6::new(a, port, 0, 0)),
-        }
-    }
-
-    /// Returns the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)));
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn ip(&self) -> IpAddr {
-        match *self {
-            SocketAddr::V4(ref a) => IpAddr::V4(*a.ip()),
-            SocketAddr::V6(ref a) => IpAddr::V6(*a.ip()),
-        }
-    }
-
-    /// Changes the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let mut socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// socket.set_ip(IpAddr::V4(Ipv4Addr::new(10, 10, 0, 1)));
-    /// assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(10, 10, 0, 1)));
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_ip(&mut self, new_ip: IpAddr) {
-        // `match (*self, new_ip)` would have us mutate a copy of self only to throw it away.
-        match (self, new_ip) {
-            (&mut SocketAddr::V4(ref mut a), IpAddr::V4(new_ip)) => a.set_ip(new_ip),
-            (&mut SocketAddr::V6(ref mut a), IpAddr::V6(new_ip)) => a.set_ip(new_ip),
-            (self_, new_ip) => *self_ = Self::new(new_ip, self_.port()),
-        }
-    }
-
-    /// Returns the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// assert_eq!(socket.port(), 8080);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn port(&self) -> u16 {
-        match *self {
-            SocketAddr::V4(ref a) => a.port(),
-            SocketAddr::V6(ref a) => a.port(),
-        }
-    }
-
-    /// Changes the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let mut socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// socket.set_port(1025);
-    /// assert_eq!(socket.port(), 1025);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_port(&mut self, new_port: u16) {
-        match *self {
-            SocketAddr::V4(ref mut a) => a.set_port(new_port),
-            SocketAddr::V6(ref mut a) => a.set_port(new_port),
-        }
-    }
-
-    /// Returns [`true`] if the [IP address] in this `SocketAddr` is an
-    /// [`IPv4` address], and [`false`] otherwise.
-    ///
-    /// [IP address]: IpAddr
-    /// [`IPv4` address]: IpAddr::V4
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, SocketAddr};
-    ///
-    /// let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-    /// assert_eq!(socket.is_ipv4(), true);
-    /// assert_eq!(socket.is_ipv6(), false);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_checker", since = "1.16.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn is_ipv4(&self) -> bool {
-        matches!(*self, SocketAddr::V4(_))
-    }
-
-    /// Returns [`true`] if the [IP address] in this `SocketAddr` is an
-    /// [`IPv6` address], and [`false`] otherwise.
-    ///
-    /// [IP address]: IpAddr
-    /// [`IPv6` address]: IpAddr::V6
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv6Addr, SocketAddr};
-    ///
-    /// let socket = SocketAddr::new(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 65535, 0, 1)), 8080);
-    /// assert_eq!(socket.is_ipv4(), false);
-    /// assert_eq!(socket.is_ipv6(), true);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_checker", since = "1.16.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn is_ipv6(&self) -> bool {
-        matches!(*self, SocketAddr::V6(_))
-    }
-}
-
-impl SocketAddrV4 {
-    /// Creates a new socket address from an [`IPv4` address] and a port number.
-    ///
-    /// [`IPv4` address]: Ipv4Addr
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV4, Ipv4Addr};
-    ///
-    /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn new(ip: Ipv4Addr, port: u16) -> SocketAddrV4 {
-        SocketAddrV4 { ip, port }
-    }
-
-    /// Returns the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV4, Ipv4Addr};
-    ///
-    /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-    /// assert_eq!(socket.ip(), &Ipv4Addr::new(127, 0, 0, 1));
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn ip(&self) -> &Ipv4Addr {
-        &self.ip
-    }
-
-    /// Changes the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV4, Ipv4Addr};
-    ///
-    /// let mut socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-    /// socket.set_ip(Ipv4Addr::new(192, 168, 0, 1));
-    /// assert_eq!(socket.ip(), &Ipv4Addr::new(192, 168, 0, 1));
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_ip(&mut self, new_ip: Ipv4Addr) {
-        self.ip = new_ip;
-    }
-
-    /// Returns the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV4, Ipv4Addr};
-    ///
-    /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-    /// assert_eq!(socket.port(), 8080);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn port(&self) -> u16 {
-        self.port
-    }
-
-    /// Changes the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV4, Ipv4Addr};
-    ///
-    /// let mut socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
-    /// socket.set_port(4242);
-    /// assert_eq!(socket.port(), 4242);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_port(&mut self, new_port: u16) {
-        self.port = new_port;
-    }
-}
-
-impl SocketAddrV6 {
-    /// Creates a new socket address from an [`IPv6` address], a 16-bit port number,
-    /// and the `flowinfo` and `scope_id` fields.
-    ///
-    /// For more information on the meaning and layout of the `flowinfo` and `scope_id`
-    /// parameters, see [IETF RFC 2553, Section 3.3].
-    ///
-    /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
-    /// [`IPv6` address]: Ipv6Addr
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn new(ip: Ipv6Addr, port: u16, flowinfo: u32, scope_id: u32) -> SocketAddrV6 {
-        SocketAddrV6 {
-            ip,
-            port,
-            flowinfo,
-            scope_id,
-        }
-    }
-
-    /// Returns the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-    /// assert_eq!(socket.ip(), &Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn ip(&self) -> &Ipv6Addr {
-        &self.ip
-    }
-
-    /// Changes the IP address associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-    /// socket.set_ip(Ipv6Addr::new(76, 45, 0, 0, 0, 0, 0, 0));
-    /// assert_eq!(socket.ip(), &Ipv6Addr::new(76, 45, 0, 0, 0, 0, 0, 0));
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_ip(&mut self, new_ip: Ipv6Addr) {
-        self.ip = new_ip;
-    }
-
-    /// Returns the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-    /// assert_eq!(socket.port(), 8080);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn port(&self) -> u16 {
-        self.port
-    }
-
-    /// Changes the port number associated with this socket address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
-    /// socket.set_port(4242);
-    /// assert_eq!(socket.port(), 4242);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_port(&mut self, new_port: u16) {
-        self.port = new_port;
-    }
-
-    /// Returns the flow information associated with this address.
-    ///
-    /// This information corresponds to the `sin6_flowinfo` field in C's `netinet/in.h`,
-    /// as specified in [IETF RFC 2553, Section 3.3].
-    /// It combines information about the flow label and the traffic class as specified
-    /// in [IETF RFC 2460], respectively [Section 6] and [Section 7].
-    ///
-    /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
-    /// [IETF RFC 2460]: https://tools.ietf.org/html/rfc2460
-    /// [Section 6]: https://tools.ietf.org/html/rfc2460#section-6
-    /// [Section 7]: https://tools.ietf.org/html/rfc2460#section-7
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 10, 0);
-    /// assert_eq!(socket.flowinfo(), 10);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn flowinfo(&self) -> u32 {
-        self.flowinfo
-    }
-
-    /// Changes the flow information associated with this socket address.
-    ///
-    /// See [`SocketAddrV6::flowinfo`]'s documentation for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 10, 0);
-    /// socket.set_flowinfo(56);
-    /// assert_eq!(socket.flowinfo(), 56);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_flowinfo(&mut self, new_flowinfo: u32) {
-        self.flowinfo = new_flowinfo;
-    }
-
-    /// Returns the scope ID associated with this address.
-    ///
-    /// This information corresponds to the `sin6_scope_id` field in C's `netinet/in.h`,
-    /// as specified in [IETF RFC 2553, Section 3.3].
-    ///
-    /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 78);
-    /// assert_eq!(socket.scope_id(), 78);
-    /// ```
-    #[must_use]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_socketaddr", issue = "82485")
-    )]
-    pub const fn scope_id(&self) -> u32 {
-        self.scope_id
-    }
-
-    /// Changes the scope ID associated with this socket address.
-    ///
-    /// See [`SocketAddrV6::scope_id`]'s documentation for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{SocketAddrV6, Ipv6Addr};
-    ///
-    /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 78);
-    /// socket.set_scope_id(42);
-    /// assert_eq!(socket.scope_id(), 42);
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "sockaddr_setters", since = "1.9.0"))]
-    pub fn set_scope_id(&mut self, new_scope_id: u32) {
-        self.scope_id = new_scope_id;
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_ip", since = "1.16.0"))]
-impl From<SocketAddrV4> for SocketAddr {
-    /// Converts a [`SocketAddrV4`] into a [`SocketAddr::V4`].
-    fn from(sock4: SocketAddrV4) -> SocketAddr {
-        SocketAddr::V4(sock4)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_ip", since = "1.16.0"))]
-impl From<SocketAddrV6> for SocketAddr {
-    /// Converts a [`SocketAddrV6`] into a [`SocketAddr::V6`].
-    fn from(sock6: SocketAddrV6) -> SocketAddr {
-        SocketAddr::V6(sock6)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "addr_from_into_ip", since = "1.17.0"))]
-impl<I: Into<IpAddr>> From<(I, u16)> for SocketAddr {
-    /// Converts a tuple struct (Into<[`IpAddr`]>, `u16`) into a [`SocketAddr`].
-    ///
-    /// This conversion creates a [`SocketAddr::V4`] for an [`IpAddr::V4`]
-    /// and creates a [`SocketAddr::V6`] for an [`IpAddr::V6`].
-    ///
-    /// `u16` is treated as port of the newly created [`SocketAddr`].
-    fn from(pieces: (I, u16)) -> SocketAddr {
-        SocketAddr::new(pieces.0.into(), pieces.1)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "socketaddr_ordering", since = "1.45.0"))]
-impl PartialOrd for SocketAddrV4 {
-    fn partial_cmp(&self, other: &SocketAddrV4) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "socketaddr_ordering", since = "1.45.0"))]
-impl PartialOrd for SocketAddrV6 {
-    fn partial_cmp(&self, other: &SocketAddrV6) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "socketaddr_ordering", since = "1.45.0"))]
-impl Ord for SocketAddrV4 {
-    fn cmp(&self, other: &SocketAddrV4) -> Ordering {
-        self.ip()
-            .cmp(other.ip())
-            .then(self.port().cmp(&other.port()))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "socketaddr_ordering", since = "1.45.0"))]
-impl Ord for SocketAddrV6 {
-    fn cmp(&self, other: &SocketAddrV6) -> Ordering {
-        self.ip()
-            .cmp(other.ip())
-            .then(self.port().cmp(&other.port()))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl hash::Hash for SocketAddrV4 {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        (self.port, self.ip).hash(s)
-    }
-}
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl hash::Hash for SocketAddrV6 {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        (self.port, &self.ip, self.flowinfo, self.scope_id).hash(s)
-    }
-}
diff --git a/vendor/rustix/src/net/ip.rs b/vendor/rustix/src/net/ip.rs
deleted file mode 100644
index ffa5302e3..000000000
--- a/vendor/rustix/src/net/ip.rs
+++ /dev/null
@@ -1,2068 +0,0 @@
-//! The following is derived from Rust's
-//! library/std/src/net/ip_addr.rs at revision
-//! bd20fc1fd657b32f7aa1d70d8723f04c87f21606.
-//!
-//! All code in this file is licensed MIT or Apache 2.0 at your option.
-//!
-//! This defines `IpAddr`, `Ipv4Addr`, and `Ipv6Addr`. Ideally, these should be
-//! defined in `core`. See [RFC 2832].
-//!
-//! [RFC 2832]: https://github.com/rust-lang/rfcs/pull/2832
-
-#![allow(unsafe_code)]
-
-use core::cmp::Ordering;
-use core::mem::transmute;
-
-/// An IP address, either IPv4 or IPv6.
-///
-/// This enum can contain either an [`Ipv4Addr`] or an [`Ipv6Addr`], see their
-/// respective documentation for more details.
-///
-/// # Examples
-///
-/// ```
-/// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-///
-/// let localhost_v4 = IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1));
-/// let localhost_v6 = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
-///
-/// assert_eq!("127.0.0.1".parse(), Ok(localhost_v4));
-/// assert_eq!("::1".parse(), Ok(localhost_v6));
-///
-/// assert_eq!(localhost_v4.is_ipv6(), false);
-/// assert_eq!(localhost_v4.is_ipv4(), true);
-/// ```
-#[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))]
-#[derive(Copy, Clone, Eq, PartialEq, Hash, PartialOrd, Ord)]
-pub enum IpAddr {
-    /// An IPv4 address.
-    #[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))]
-    V4(#[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))] Ipv4Addr),
-    /// An IPv6 address.
-    #[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))]
-    V6(#[cfg_attr(staged_api, stable(feature = "ip_addr", since = "1.7.0"))] Ipv6Addr),
-}
-
-/// An IPv4 address.
-///
-/// IPv4 addresses are defined as 32-bit integers in [IETF RFC 791].
-/// They are usually represented as four octets.
-///
-/// See [`IpAddr`] for a type encompassing both IPv4 and IPv6 addresses.
-///
-/// [IETF RFC 791]: https://tools.ietf.org/html/rfc791
-///
-/// # Textual representation
-///
-/// `Ipv4Addr` provides a [`FromStr`] implementation. The four octets are in decimal
-/// notation, divided by `.` (this is called "dot-decimal notation").
-/// Notably, octal numbers (which are indicated with a leading `0`) and hexadecimal numbers (which
-/// are indicated with a leading `0x`) are not allowed per [IETF RFC 6943].
-///
-/// [IETF RFC 6943]: https://tools.ietf.org/html/rfc6943#section-3.1.1
-/// [`FromStr`]: core::str::FromStr
-///
-/// # Examples
-///
-/// ```
-/// use std::net::Ipv4Addr;
-///
-/// let localhost = Ipv4Addr::new(127, 0, 0, 1);
-/// assert_eq!("127.0.0.1".parse(), Ok(localhost));
-/// assert_eq!(localhost.is_loopback(), true);
-/// assert!("012.004.002.000".parse::<Ipv4Addr>().is_err()); // all octets are in octal
-/// assert!("0000000.0.0.0".parse::<Ipv4Addr>().is_err()); // first octet is a zero in octal
-/// assert!("0xcb.0x0.0x71.0x00".parse::<Ipv4Addr>().is_err()); // all octets are in hex
-/// ```
-#[derive(Copy, Clone, PartialEq, Eq, Hash)]
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-pub struct Ipv4Addr {
-    octets: [u8; 4],
-}
-
-/// An IPv6 address.
-///
-/// IPv6 addresses are defined as 128-bit integers in [IETF RFC 4291].
-/// They are usually represented as eight 16-bit segments.
-///
-/// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
-///
-/// # Embedding IPv4 Addresses
-///
-/// See [`IpAddr`] for a type encompassing both IPv4 and IPv6 addresses.
-///
-/// To assist in the transition from IPv4 to IPv6 two types of IPv6 addresses that embed an IPv4 address were defined:
-/// IPv4-compatible and IPv4-mapped addresses. Of these IPv4-compatible addresses have been officially deprecated.
-///
-/// Both types of addresses are not assigned any special meaning by this implementation,
-/// other than what the relevant standards prescribe. This means that an address like `::ffff:127.0.0.1`,
-/// while representing an IPv4 loopback address, is not itself an IPv6 loopback address; only `::1` is.
-/// To handle these so called "IPv4-in-IPv6" addresses, they have to first be converted to their canonical IPv4 address.
-///
-/// ### IPv4-Compatible IPv6 Addresses
-///
-/// IPv4-compatible IPv6 addresses are defined in [IETF RFC 4291 Section 2.5.5.1], and have been officially deprecated.
-/// The RFC describes the format of an "IPv4-Compatible IPv6 address" as follows:
-///
-/// ```text
-/// |                80 bits               | 16 |      32 bits        |
-/// +--------------------------------------+--------------------------+
-/// |0000..............................0000|0000|    IPv4 address     |
-/// +--------------------------------------+----+---------------------+
-/// ```
-/// So `::a.b.c.d` would be an IPv4-compatible IPv6 address representing the IPv4 address `a.b.c.d`.
-///
-/// To convert from an IPv4 address to an IPv4-compatible IPv6 address, use [`Ipv4Addr::to_ipv6_compatible`].
-/// Use [`Ipv6Addr::to_ipv4`] to convert an IPv4-compatible IPv6 address to the canonical IPv4 address.
-///
-/// [IETF RFC 4291 Section 2.5.5.1]: https://datatracker.ietf.org/doc/html/rfc4291#section-2.5.5.1
-///
-/// ### IPv4-Mapped IPv6 Addresses
-///
-/// IPv4-mapped IPv6 addresses are defined in [IETF RFC 4291 Section 2.5.5.2].
-/// The RFC describes the format of an "IPv4-Mapped IPv6 address" as follows:
-///
-/// ```text
-/// |                80 bits               | 16 |      32 bits        |
-/// +--------------------------------------+--------------------------+
-/// |0000..............................0000|FFFF|    IPv4 address     |
-/// +--------------------------------------+----+---------------------+
-/// ```
-/// So `::ffff:a.b.c.d` would be an IPv4-mapped IPv6 address representing the IPv4 address `a.b.c.d`.
-///
-/// To convert from an IPv4 address to an IPv4-mapped IPv6 address, use [`Ipv4Addr::to_ipv6_mapped`].
-/// Use [`Ipv6Addr::to_ipv4`] to convert an IPv4-mapped IPv6 address to the canonical IPv4 address.
-/// Note that this will also convert the IPv6 loopback address `::1` to `0.0.0.1`. Use
-/// [`Ipv6Addr::to_ipv4_mapped`] to avoid this.
-///
-/// [IETF RFC 4291 Section 2.5.5.2]: https://datatracker.ietf.org/doc/html/rfc4291#section-2.5.5.2
-///
-/// # Textual representation
-///
-/// `Ipv6Addr` provides a [`FromStr`] implementation. There are many ways to represent
-/// an IPv6 address in text, but in general, each segments is written in hexadecimal
-/// notation, and segments are separated by `:`. For more information, see
-/// [IETF RFC 5952].
-///
-/// [`FromStr`]: core::str::FromStr
-/// [IETF RFC 5952]: https://tools.ietf.org/html/rfc5952
-///
-/// # Examples
-///
-/// ```
-/// use std::net::Ipv6Addr;
-///
-/// let localhost = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1);
-/// assert_eq!("::1".parse(), Ok(localhost));
-/// assert_eq!(localhost.is_loopback(), true);
-/// ```
-#[derive(Copy, Clone, PartialEq, Eq, Hash)]
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-pub struct Ipv6Addr {
-    octets: [u8; 16],
-}
-
-/// Scope of an [IPv6 multicast address] as defined in [IETF RFC 7346 section 2].
-///
-/// # Stability Guarantees
-///
-/// Not all possible values for a multicast scope have been assigned.
-/// Future RFCs may introduce new scopes, which will be added as variants to this enum;
-/// because of this the enum is marked as `#[non_exhaustive]`.
-///
-/// # Examples
-/// ```
-/// #![feature(ip)]
-///
-/// use std::net::Ipv6Addr;
-/// use std::net::Ipv6MulticastScope::*;
-///
-/// // An IPv6 multicast address with global scope (`ff0e::`).
-/// let address = Ipv6Addr::new(0xff0e, 0, 0, 0, 0, 0, 0, 0);
-///
-/// // Will print "Global scope".
-/// match address.multicast_scope() {
-///     Some(InterfaceLocal) => println!("Interface-Local scope"),
-///     Some(LinkLocal) => println!("Link-Local scope"),
-///     Some(RealmLocal) => println!("Realm-Local scope"),
-///     Some(AdminLocal) => println!("Admin-Local scope"),
-///     Some(SiteLocal) => println!("Site-Local scope"),
-///     Some(OrganizationLocal) => println!("Organization-Local scope"),
-///     Some(Global) => println!("Global scope"),
-///     Some(_) => println!("Unknown scope"),
-///     None => println!("Not a multicast address!")
-/// }
-///
-/// ```
-///
-/// [IPv6 multicast address]: Ipv6Addr
-/// [IETF RFC 7346 section 2]: https://tools.ietf.org/html/rfc7346#section-2
-#[derive(Copy, PartialEq, Eq, Clone, Hash, Debug)]
-#[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-#[non_exhaustive]
-pub enum Ipv6MulticastScope {
-    /// Interface-Local scope.
-    InterfaceLocal,
-    /// Link-Local scope.
-    LinkLocal,
-    /// Realm-Local scope.
-    RealmLocal,
-    /// Admin-Local scope.
-    AdminLocal,
-    /// Site-Local scope.
-    SiteLocal,
-    /// Organization-Local scope.
-    OrganizationLocal,
-    /// Global scope.
-    Global,
-}
-
-impl IpAddr {
-    /// Returns [`true`] for the special 'unspecified' address.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_unspecified()`] and
-    /// [`Ipv6Addr::is_unspecified()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)).is_unspecified(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0)).is_unspecified(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ip_shared", since = "1.12.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unspecified(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_unspecified(),
-            IpAddr::V6(ip) => ip.is_unspecified(),
-        }
-    }
-
-    /// Returns [`true`] if this is a loopback address.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_loopback()`] and
-    /// [`Ipv6Addr::is_loopback()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)).is_loopback(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0x1)).is_loopback(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ip_shared", since = "1.12.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_loopback(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_loopback(),
-            IpAddr::V6(ip) => ip.is_loopback(),
-        }
-    }
-
-    /// Returns [`true`] if the address appears to be globally routable.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_global()`] and
-    /// [`Ipv6Addr::is_global()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(80, 9, 12, 3)).is_global(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0x1c9, 0, 0, 0xafc8, 0, 0x1)).is_global(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ip", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_global(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_global(),
-            IpAddr::V6(ip) => ip.is_global(),
-        }
-    }
-
-    /// Returns [`true`] if this is a multicast address.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_multicast()`] and
-    /// [`Ipv6Addr::is_multicast()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(224, 254, 0, 0)).is_multicast(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0)).is_multicast(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ip_shared", since = "1.12.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_multicast(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_multicast(),
-            IpAddr::V6(ip) => ip.is_multicast(),
-        }
-    }
-
-    /// Returns [`true`] if this address is in a range designated for documentation.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_documentation()`] and
-    /// [`Ipv6Addr::is_documentation()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(203, 0, 113, 6)).is_documentation(), true);
-    /// assert_eq!(
-    ///     IpAddr::V6(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0)).is_documentation(),
-    ///     true
-    /// );
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ip", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_documentation(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_documentation(),
-            IpAddr::V6(ip) => ip.is_documentation(),
-        }
-    }
-
-    /// Returns [`true`] if this address is in a range designated for benchmarking.
-    ///
-    /// See the documentation for [`Ipv4Addr::is_benchmarking()`] and
-    /// [`Ipv6Addr::is_benchmarking()`] for more details.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(198, 19, 255, 255)).is_benchmarking(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0x2001, 0x2, 0, 0, 0, 0, 0, 0)).is_benchmarking(), true);
-    /// ```
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_benchmarking(&self) -> bool {
-        match self {
-            IpAddr::V4(ip) => ip.is_benchmarking(),
-            IpAddr::V6(ip) => ip.is_benchmarking(),
-        }
-    }
-
-    /// Returns [`true`] if this address is an [`IPv4` address], and [`false`]
-    /// otherwise.
-    ///
-    /// [`IPv4` address]: IpAddr::V4
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(203, 0, 113, 6)).is_ipv4(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0)).is_ipv4(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ipaddr_checker", since = "1.16.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_ipv4(&self) -> bool {
-        matches!(self, IpAddr::V4(_))
-    }
-
-    /// Returns [`true`] if this address is an [`IPv6` address], and [`false`]
-    /// otherwise.
-    ///
-    /// [`IPv6` address]: IpAddr::V6
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(203, 0, 113, 6)).is_ipv6(), false);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0)).is_ipv6(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ipaddr_checker", since = "1.16.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_ipv6(&self) -> bool {
-        matches!(self, IpAddr::V6(_))
-    }
-
-    /// Converts this address to an `IpAddr::V4` if it is an IPv4-mapped IPv6 addresses, otherwise it
-    /// return `self` as-is.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)).to_canonical().is_loopback(), true);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1)).is_loopback(), false);
-    /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1)).to_canonical().is_loopback(), true);
-    /// ```
-    #[inline]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ip", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    pub const fn to_canonical(&self) -> IpAddr {
-        match self {
-            &v4 @ IpAddr::V4(_) => v4,
-            IpAddr::V6(v6) => v6.to_canonical(),
-        }
-    }
-}
-
-impl Ipv4Addr {
-    /// Creates a new IPv4 address from four eight-bit octets.
-    ///
-    /// The result will represent the IP address `a`.`b`.`c`.`d`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::new(127, 0, 0, 1);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_32", since = "1.32.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn new(a: u8, b: u8, c: u8, d: u8) -> Ipv4Addr {
-        Ipv4Addr {
-            octets: [a, b, c, d],
-        }
-    }
-
-    /// An IPv4 address with the address pointing to localhost: `127.0.0.1`
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::LOCALHOST;
-    /// assert_eq!(addr, Ipv4Addr::new(127, 0, 0, 1));
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "ip_constructors", since = "1.30.0"))]
-    pub const LOCALHOST: Self = Ipv4Addr::new(127, 0, 0, 1);
-
-    /// An IPv4 address representing an unspecified address: `0.0.0.0`
-    ///
-    /// This corresponds to the constant `INADDR_ANY` in other languages.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::UNSPECIFIED;
-    /// assert_eq!(addr, Ipv4Addr::new(0, 0, 0, 0));
-    /// ```
-    #[doc(alias = "INADDR_ANY")]
-    #[cfg_attr(staged_api, stable(feature = "ip_constructors", since = "1.30.0"))]
-    pub const UNSPECIFIED: Self = Ipv4Addr::new(0, 0, 0, 0);
-
-    /// An IPv4 address representing the broadcast address: `255.255.255.255`
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::BROADCAST;
-    /// assert_eq!(addr, Ipv4Addr::new(255, 255, 255, 255));
-    /// ```
-    #[cfg_attr(staged_api, stable(feature = "ip_constructors", since = "1.30.0"))]
-    pub const BROADCAST: Self = Ipv4Addr::new(255, 255, 255, 255);
-
-    /// Returns the four eight-bit integers that make up this address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::new(127, 0, 0, 1);
-    /// assert_eq!(addr.octets(), [127, 0, 0, 1]);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn octets(&self) -> [u8; 4] {
-        self.octets
-    }
-
-    /// Returns [`true`] for the special 'unspecified' address (`0.0.0.0`).
-    ///
-    /// This property is defined in _UNIX Network Programming, Second Edition_,
-    /// W. Richard Stevens, p. 891; see also [ip7].
-    ///
-    /// [ip7]: https://man7.org/linux/man-pages/man7/ip.7.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(0, 0, 0, 0).is_unspecified(), true);
-    /// assert_eq!(Ipv4Addr::new(45, 22, 13, 197).is_unspecified(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_32", since = "1.32.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ip_shared", since = "1.12.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unspecified(&self) -> bool {
-        u32::from_be_bytes(self.octets) == 0
-    }
-
-    /// Returns [`true`] if this is a loopback address (`127.0.0.0/8`).
-    ///
-    /// This property is defined by [IETF RFC 1122].
-    ///
-    /// [IETF RFC 1122]: https://tools.ietf.org/html/rfc1122
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(127, 0, 0, 1).is_loopback(), true);
-    /// assert_eq!(Ipv4Addr::new(45, 22, 13, 197).is_loopback(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_loopback(&self) -> bool {
-        self.octets()[0] == 127
-    }
-
-    /// Returns [`true`] if this is a private address.
-    ///
-    /// The private address ranges are defined in [IETF RFC 1918] and include:
-    ///
-    ///  - `10.0.0.0/8`
-    ///  - `172.16.0.0/12`
-    ///  - `192.168.0.0/16`
-    ///
-    /// [IETF RFC 1918]: https://tools.ietf.org/html/rfc1918
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(10, 0, 0, 1).is_private(), true);
-    /// assert_eq!(Ipv4Addr::new(10, 10, 10, 10).is_private(), true);
-    /// assert_eq!(Ipv4Addr::new(172, 16, 10, 10).is_private(), true);
-    /// assert_eq!(Ipv4Addr::new(172, 29, 45, 14).is_private(), true);
-    /// assert_eq!(Ipv4Addr::new(172, 32, 0, 2).is_private(), false);
-    /// assert_eq!(Ipv4Addr::new(192, 168, 0, 2).is_private(), true);
-    /// assert_eq!(Ipv4Addr::new(192, 169, 0, 2).is_private(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_private(&self) -> bool {
-        match self.octets() {
-            [10, ..] => true,
-            [172, b, ..] if b >= 16 && b <= 31 => true,
-            [192, 168, ..] => true,
-            _ => false,
-        }
-    }
-
-    /// Returns [`true`] if the address is link-local (`169.254.0.0/16`).
-    ///
-    /// This property is defined by [IETF RFC 3927].
-    ///
-    /// [IETF RFC 3927]: https://tools.ietf.org/html/rfc3927
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(169, 254, 0, 0).is_link_local(), true);
-    /// assert_eq!(Ipv4Addr::new(169, 254, 10, 65).is_link_local(), true);
-    /// assert_eq!(Ipv4Addr::new(16, 89, 10, 65).is_link_local(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_link_local(&self) -> bool {
-        matches!(self.octets(), [169, 254, ..])
-    }
-
-    /// Returns [`true`] if the address appears to be globally reachable
-    /// as specified by the [IANA IPv4 Special-Purpose Address Registry].
-    /// Whether or not an address is practically reachable will depend on your network configuration.
-    ///
-    /// Most IPv4 addresses are globally reachable;
-    /// unless they are specifically defined as *not* globally reachable.
-    ///
-    /// Non-exhaustive list of notable addresses that are not globally reachable:
-    ///
-    /// - The [unspecified address] ([`is_unspecified`](Ipv4Addr::is_unspecified))
-    /// - Addresses reserved for private use ([`is_private`](Ipv4Addr::is_private))
-    /// - Addresses in the shared address space ([`is_shared`](Ipv4Addr::is_shared))
-    /// - Loopback addresses ([`is_loopback`](Ipv4Addr::is_loopback))
-    /// - Link-local addresses ([`is_link_local`](Ipv4Addr::is_link_local))
-    /// - Addresses reserved for documentation ([`is_documentation`](Ipv4Addr::is_documentation))
-    /// - Addresses reserved for benchmarking ([`is_benchmarking`](Ipv4Addr::is_benchmarking))
-    /// - Reserved addresses ([`is_reserved`](Ipv4Addr::is_reserved))
-    /// - The [broadcast address] ([`is_broadcast`](Ipv4Addr::is_broadcast))
-    ///
-    /// For the complete overview of which addresses are globally reachable, see the table at the [IANA IPv4 Special-Purpose Address Registry].
-    ///
-    /// [IANA IPv4 Special-Purpose Address Registry]: https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
-    /// [unspecified address]: Ipv4Addr::UNSPECIFIED
-    /// [broadcast address]: Ipv4Addr::BROADCAST
-
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv4Addr;
-    ///
-    /// // Most IPv4 addresses are globally reachable:
-    /// assert_eq!(Ipv4Addr::new(80, 9, 12, 3).is_global(), true);
-    ///
-    /// // However some addresses have been assigned a special meaning
-    /// // that makes them not globally reachable. Some examples are:
-    ///
-    /// // The unspecified address (`0.0.0.0`)
-    /// assert_eq!(Ipv4Addr::UNSPECIFIED.is_global(), false);
-    ///
-    /// // Addresses reserved for private use (`10.0.0.0/8`, `172.16.0.0/12`, 192.168.0.0/16)
-    /// assert_eq!(Ipv4Addr::new(10, 254, 0, 0).is_global(), false);
-    /// assert_eq!(Ipv4Addr::new(192, 168, 10, 65).is_global(), false);
-    /// assert_eq!(Ipv4Addr::new(172, 16, 10, 65).is_global(), false);
-    ///
-    /// // Addresses in the shared address space (`100.64.0.0/10`)
-    /// assert_eq!(Ipv4Addr::new(100, 100, 0, 0).is_global(), false);
-    ///
-    /// // The loopback addresses (`127.0.0.0/8`)
-    /// assert_eq!(Ipv4Addr::LOCALHOST.is_global(), false);
-    ///
-    /// // Link-local addresses (`169.254.0.0/16`)
-    /// assert_eq!(Ipv4Addr::new(169, 254, 45, 1).is_global(), false);
-    ///
-    /// // Addresses reserved for documentation (`192.0.2.0/24`, `198.51.100.0/24`, `203.0.113.0/24`)
-    /// assert_eq!(Ipv4Addr::new(192, 0, 2, 255).is_global(), false);
-    /// assert_eq!(Ipv4Addr::new(198, 51, 100, 65).is_global(), false);
-    /// assert_eq!(Ipv4Addr::new(203, 0, 113, 6).is_global(), false);
-    ///
-    /// // Addresses reserved for benchmarking (`198.18.0.0/15`)
-    /// assert_eq!(Ipv4Addr::new(198, 18, 0, 0).is_global(), false);
-    ///
-    /// // Reserved addresses (`240.0.0.0/4`)
-    /// assert_eq!(Ipv4Addr::new(250, 10, 20, 30).is_global(), false);
-    ///
-    /// // The broadcast address (`255.255.255.255`)
-    /// assert_eq!(Ipv4Addr::BROADCAST.is_global(), false);
-    ///
-    /// // For a complete overview see the IANA IPv4 Special-Purpose Address Registry.
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv4", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_global(&self) -> bool {
-        !(self.octets()[0] == 0 // "This network"
-            || self.is_private()
-            || self.is_shared()
-            || self.is_loopback()
-            || self.is_link_local()
-            // addresses reserved for future protocols (`192.0.0.0/24`)
-            ||(self.octets()[0] == 192 && self.octets()[1] == 0 && self.octets()[2] == 0)
-            || self.is_documentation()
-            || self.is_benchmarking()
-            || self.is_reserved()
-            || self.is_broadcast())
-    }
-
-    /// Returns [`true`] if this address is part of the Shared Address Space defined in
-    /// [IETF RFC 6598] (`100.64.0.0/10`).
-    ///
-    /// [IETF RFC 6598]: https://tools.ietf.org/html/rfc6598
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(100, 64, 0, 0).is_shared(), true);
-    /// assert_eq!(Ipv4Addr::new(100, 127, 255, 255).is_shared(), true);
-    /// assert_eq!(Ipv4Addr::new(100, 128, 0, 0).is_shared(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv4", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_shared(&self) -> bool {
-        self.octets()[0] == 100 && (self.octets()[1] & 0b1100_0000 == 0b0100_0000)
-    }
-
-    /// Returns [`true`] if this address part of the `198.18.0.0/15` range, which is reserved for
-    /// network devices benchmarking. This range is defined in [IETF RFC 2544] as `192.18.0.0`
-    /// through `198.19.255.255` but [errata 423] corrects it to `198.18.0.0/15`.
-    ///
-    /// [IETF RFC 2544]: https://tools.ietf.org/html/rfc2544
-    /// [errata 423]: https://www.rfc-editor.org/errata/eid423
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(198, 17, 255, 255).is_benchmarking(), false);
-    /// assert_eq!(Ipv4Addr::new(198, 18, 0, 0).is_benchmarking(), true);
-    /// assert_eq!(Ipv4Addr::new(198, 19, 255, 255).is_benchmarking(), true);
-    /// assert_eq!(Ipv4Addr::new(198, 20, 0, 0).is_benchmarking(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv4", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_benchmarking(&self) -> bool {
-        self.octets()[0] == 198 && (self.octets()[1] & 0xfe) == 18
-    }
-
-    /// Returns [`true`] if this address is reserved by IANA for future use. [IETF RFC 1112]
-    /// defines the block of reserved addresses as `240.0.0.0/4`. This range normally includes the
-    /// broadcast address `255.255.255.255`, but this implementation explicitly excludes it, since
-    /// it is obviously not reserved for future use.
-    ///
-    /// [IETF RFC 1112]: https://tools.ietf.org/html/rfc1112
-    ///
-    /// # Warning
-    ///
-    /// As IANA assigns new addresses, this method will be
-    /// updated. This may result in non-reserved addresses being
-    /// treated as reserved in code that relies on an outdated version
-    /// of this method.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(240, 0, 0, 0).is_reserved(), true);
-    /// assert_eq!(Ipv4Addr::new(255, 255, 255, 254).is_reserved(), true);
-    ///
-    /// assert_eq!(Ipv4Addr::new(239, 255, 255, 255).is_reserved(), false);
-    /// // The broadcast address is not considered as reserved for future use by this implementation
-    /// assert_eq!(Ipv4Addr::new(255, 255, 255, 255).is_reserved(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv4", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_reserved(&self) -> bool {
-        self.octets()[0] & 240 == 240 && !self.is_broadcast()
-    }
-
-    /// Returns [`true`] if this is a multicast address (`224.0.0.0/4`).
-    ///
-    /// Multicast addresses have a most significant octet between `224` and `239`,
-    /// and is defined by [IETF RFC 5771].
-    ///
-    /// [IETF RFC 5771]: https://tools.ietf.org/html/rfc5771
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(224, 254, 0, 0).is_multicast(), true);
-    /// assert_eq!(Ipv4Addr::new(236, 168, 10, 65).is_multicast(), true);
-    /// assert_eq!(Ipv4Addr::new(172, 16, 10, 65).is_multicast(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_multicast(&self) -> bool {
-        self.octets()[0] >= 224 && self.octets()[0] <= 239
-    }
-
-    /// Returns [`true`] if this is a broadcast address (`255.255.255.255`).
-    ///
-    /// A broadcast address has all octets set to `255` as defined in [IETF RFC 919].
-    ///
-    /// [IETF RFC 919]: https://tools.ietf.org/html/rfc919
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(255, 255, 255, 255).is_broadcast(), true);
-    /// assert_eq!(Ipv4Addr::new(236, 168, 10, 65).is_broadcast(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_broadcast(&self) -> bool {
-        u32::from_be_bytes(self.octets()) == u32::from_be_bytes(Self::BROADCAST.octets())
-    }
-
-    /// Returns [`true`] if this address is in a range designated for documentation.
-    ///
-    /// This is defined in [IETF RFC 5737]:
-    ///
-    /// - `192.0.2.0/24` (TEST-NET-1)
-    /// - `198.51.100.0/24` (TEST-NET-2)
-    /// - `203.0.113.0/24` (TEST-NET-3)
-    ///
-    /// [IETF RFC 5737]: https://tools.ietf.org/html/rfc5737
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// assert_eq!(Ipv4Addr::new(192, 0, 2, 255).is_documentation(), true);
-    /// assert_eq!(Ipv4Addr::new(198, 51, 100, 65).is_documentation(), true);
-    /// assert_eq!(Ipv4Addr::new(203, 0, 113, 6).is_documentation(), true);
-    /// assert_eq!(Ipv4Addr::new(193, 34, 17, 19).is_documentation(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_documentation(&self) -> bool {
-        matches!(
-            self.octets(),
-            [192, 0, 2, _] | [198, 51, 100, _] | [203, 0, 113, _]
-        )
-    }
-
-    /// Converts this address to an [IPv4-compatible] [`IPv6` address].
-    ///
-    /// `a.b.c.d` becomes `::a.b.c.d`
-    ///
-    /// Note that IPv4-compatible addresses have been officially deprecated.
-    /// If you don't explicitly need an IPv4-compatible address for legacy reasons, consider using `to_ipv6_mapped` instead.
-    ///
-    /// [IPv4-compatible]: Ipv6Addr#ipv4-compatible-ipv6-addresses
-    /// [`IPv6` address]: Ipv6Addr
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(
-    ///     Ipv4Addr::new(192, 0, 2, 255).to_ipv6_compatible(),
-    ///     Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0xc000, 0x2ff)
-    /// );
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[inline]
-    pub const fn to_ipv6_compatible(&self) -> Ipv6Addr {
-        let [a, b, c, d] = self.octets();
-        Ipv6Addr {
-            octets: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, a, b, c, d],
-        }
-    }
-
-    /// Converts this address to an [IPv4-mapped] [`IPv6` address].
-    ///
-    /// `a.b.c.d` becomes `::ffff:a.b.c.d`
-    ///
-    /// [IPv4-mapped]: Ipv6Addr#ipv4-mapped-ipv6-addresses
-    /// [`IPv6` address]: Ipv6Addr
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(Ipv4Addr::new(192, 0, 2, 255).to_ipv6_mapped(),
-    ///            Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc000, 0x2ff));
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[inline]
-    pub const fn to_ipv6_mapped(&self) -> Ipv6Addr {
-        let [a, b, c, d] = self.octets();
-        Ipv6Addr {
-            octets: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, a, b, c, d],
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_ip", since = "1.16.0"))]
-impl From<Ipv4Addr> for IpAddr {
-    /// Copies this address to a new `IpAddr::V4`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr};
-    ///
-    /// let addr = Ipv4Addr::new(127, 0, 0, 1);
-    ///
-    /// assert_eq!(
-    ///     IpAddr::V4(addr),
-    ///     IpAddr::from(addr)
-    /// )
-    /// ```
-    #[inline]
-    fn from(ipv4: Ipv4Addr) -> IpAddr {
-        IpAddr::V4(ipv4)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_ip", since = "1.16.0"))]
-impl From<Ipv6Addr> for IpAddr {
-    /// Copies this address to a new `IpAddr::V6`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv6Addr};
-    ///
-    /// let addr = Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff);
-    ///
-    /// assert_eq!(
-    ///     IpAddr::V6(addr),
-    ///     IpAddr::from(addr)
-    /// );
-    /// ```
-    #[inline]
-    fn from(ipv6: Ipv6Addr) -> IpAddr {
-        IpAddr::V6(ipv6)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialEq<Ipv4Addr> for IpAddr {
-    #[inline]
-    fn eq(&self, other: &Ipv4Addr) -> bool {
-        match self {
-            IpAddr::V4(v4) => v4 == other,
-            IpAddr::V6(_) => false,
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialEq<IpAddr> for Ipv4Addr {
-    #[inline]
-    fn eq(&self, other: &IpAddr) -> bool {
-        match other {
-            IpAddr::V4(v4) => self == v4,
-            IpAddr::V6(_) => false,
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl PartialOrd for Ipv4Addr {
-    #[inline]
-    fn partial_cmp(&self, other: &Ipv4Addr) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialOrd<Ipv4Addr> for IpAddr {
-    #[inline]
-    fn partial_cmp(&self, other: &Ipv4Addr) -> Option<Ordering> {
-        match self {
-            IpAddr::V4(v4) => v4.partial_cmp(other),
-            IpAddr::V6(_) => Some(Ordering::Greater),
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialOrd<IpAddr> for Ipv4Addr {
-    #[inline]
-    fn partial_cmp(&self, other: &IpAddr) -> Option<Ordering> {
-        match other {
-            IpAddr::V4(v4) => self.partial_cmp(v4),
-            IpAddr::V6(_) => Some(Ordering::Less),
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl Ord for Ipv4Addr {
-    #[inline]
-    fn cmp(&self, other: &Ipv4Addr) -> Ordering {
-        self.octets.cmp(&other.octets)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_u32", since = "1.1.0"))]
-impl From<Ipv4Addr> for u32 {
-    /// Converts an `Ipv4Addr` into a host byte order `u32`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::new(0x12, 0x34, 0x56, 0x78);
-    /// assert_eq!(0x12345678, u32::from(addr));
-    /// ```
-    #[inline]
-    fn from(ip: Ipv4Addr) -> u32 {
-        u32::from_be_bytes(ip.octets)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_u32", since = "1.1.0"))]
-impl From<u32> for Ipv4Addr {
-    /// Converts a host byte order `u32` into an `Ipv4Addr`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::from(0x12345678);
-    /// assert_eq!(Ipv4Addr::new(0x12, 0x34, 0x56, 0x78), addr);
-    /// ```
-    #[inline]
-    fn from(ip: u32) -> Ipv4Addr {
-        Ipv4Addr {
-            octets: ip.to_be_bytes(),
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "from_slice_v4", since = "1.9.0"))]
-impl From<[u8; 4]> for Ipv4Addr {
-    /// Creates an `Ipv4Addr` from a four element byte array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv4Addr;
-    ///
-    /// let addr = Ipv4Addr::from([13u8, 12u8, 11u8, 10u8]);
-    /// assert_eq!(Ipv4Addr::new(13, 12, 11, 10), addr);
-    /// ```
-    #[inline]
-    fn from(octets: [u8; 4]) -> Ipv4Addr {
-        Ipv4Addr { octets }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_slice", since = "1.17.0"))]
-impl From<[u8; 4]> for IpAddr {
-    /// Creates an `IpAddr::V4` from a four element byte array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv4Addr};
-    ///
-    /// let addr = IpAddr::from([13u8, 12u8, 11u8, 10u8]);
-    /// assert_eq!(IpAddr::V4(Ipv4Addr::new(13, 12, 11, 10)), addr);
-    /// ```
-    #[inline]
-    fn from(octets: [u8; 4]) -> IpAddr {
-        IpAddr::V4(Ipv4Addr::from(octets))
-    }
-}
-
-impl Ipv6Addr {
-    /// Creates a new IPv6 address from eight 16-bit segments.
-    ///
-    /// The result will represent the IP address `a:b:c:d:e:f:g:h`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_32", since = "1.32.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[allow(clippy::too_many_arguments)]
-    #[must_use]
-    #[inline]
-    pub const fn new(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> Ipv6Addr {
-        let addr16 = [
-            a.to_be(),
-            b.to_be(),
-            c.to_be(),
-            d.to_be(),
-            e.to_be(),
-            f.to_be(),
-            g.to_be(),
-            h.to_be(),
-        ];
-        Ipv6Addr {
-            // All elements in `addr16` are big endian.
-            // SAFETY: `[u16; 8]` is always safe to transmute to `[u8; 16]`.
-            octets: unsafe { transmute::<_, [u8; 16]>(addr16) },
-        }
-    }
-
-    /// An IPv6 address representing localhost: `::1`.
-    ///
-    /// This corresponds to constant `IN6ADDR_LOOPBACK_INIT` or `in6addr_loopback` in other
-    /// languages.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::LOCALHOST;
-    /// assert_eq!(addr, Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
-    /// ```
-    #[doc(alias = "IN6ADDR_LOOPBACK_INIT")]
-    #[doc(alias = "in6addr_loopback")]
-    #[cfg_attr(staged_api, stable(feature = "ip_constructors", since = "1.30.0"))]
-    pub const LOCALHOST: Self = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1);
-
-    /// An IPv6 address representing the unspecified address: `::`
-    ///
-    /// This corresponds to constant `IN6ADDR_ANY_INIT` or `in6addr_any` in other languages.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::UNSPECIFIED;
-    /// assert_eq!(addr, Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0));
-    /// ```
-    #[doc(alias = "IN6ADDR_ANY_INIT")]
-    #[doc(alias = "in6addr_any")]
-    #[cfg_attr(staged_api, stable(feature = "ip_constructors", since = "1.30.0"))]
-    pub const UNSPECIFIED: Self = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0);
-
-    /// Returns the eight 16-bit segments that make up this address.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).segments(),
-    ///            [0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff]);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn segments(&self) -> [u16; 8] {
-        // All elements in `self.octets` must be big endian.
-        // SAFETY: `[u8; 16]` is always safe to transmute to `[u16; 8]`.
-        let [a, b, c, d, e, f, g, h] = unsafe { transmute::<_, [u16; 8]>(self.octets) };
-        // We want native endian u16
-        [
-            u16::from_be(a),
-            u16::from_be(b),
-            u16::from_be(c),
-            u16::from_be(d),
-            u16::from_be(e),
-            u16::from_be(f),
-            u16::from_be(g),
-            u16::from_be(h),
-        ]
-    }
-
-    /// Returns [`true`] for the special 'unspecified' address (`::`).
-    ///
-    /// This property is defined in [IETF RFC 4291].
-    ///
-    /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unspecified(), false);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0).is_unspecified(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unspecified(&self) -> bool {
-        u128::from_be_bytes(self.octets()) == u128::from_be_bytes(Ipv6Addr::UNSPECIFIED.octets())
-    }
-
-    /// Returns [`true`] if this is the [loopback address] (`::1`),
-    /// as defined in [IETF RFC 4291 section 2.5.3].
-    ///
-    /// Contrary to IPv4, in IPv6 there is only one loopback address.
-    ///
-    /// [loopback address]: Ipv6Addr::LOCALHOST
-    /// [IETF RFC 4291 section 2.5.3]: https://tools.ietf.org/html/rfc4291#section-2.5.3
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_loopback(), false);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0x1).is_loopback(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_loopback(&self) -> bool {
-        u128::from_be_bytes(self.octets()) == u128::from_be_bytes(Ipv6Addr::LOCALHOST.octets())
-    }
-
-    /// Returns [`true`] if the address appears to be globally reachable
-    /// as specified by the [IANA IPv6 Special-Purpose Address Registry].
-    /// Whether or not an address is practically reachable will depend on your network configuration.
-    ///
-    /// Most IPv6 addresses are globally reachable;
-    /// unless they are specifically defined as *not* globally reachable.
-    ///
-    /// Non-exhaustive list of notable addresses that are not globally reachable:
-    /// - The [unspecified address] ([`is_unspecified`](Ipv6Addr::is_unspecified))
-    /// - The [loopback address] ([`is_loopback`](Ipv6Addr::is_loopback))
-    /// - IPv4-mapped addresses
-    /// - Addresses reserved for benchmarking
-    /// - Addresses reserved for documentation ([`is_documentation`](Ipv6Addr::is_documentation))
-    /// - Unique local addresses ([`is_unique_local`](Ipv6Addr::is_unique_local))
-    /// - Unicast addresses with link-local scope ([`is_unicast_link_local`](Ipv6Addr::is_unicast_link_local))
-    ///
-    /// For the complete overview of which addresses are globally reachable, see the table at the [IANA IPv6 Special-Purpose Address Registry].
-    ///
-    /// Note that an address having global scope is not the same as being globally reachable,
-    /// and there is no direct relation between the two concepts: There exist addresses with global scope
-    /// that are not globally reachable (for example unique local addresses),
-    /// and addresses that are globally reachable without having global scope
-    /// (multicast addresses with non-global scope).
-    ///
-    /// [IANA IPv6 Special-Purpose Address Registry]: https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml
-    /// [unspecified address]: Ipv6Addr::UNSPECIFIED
-    /// [loopback address]: Ipv6Addr::LOCALHOST
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// // Most IPv6 addresses are globally reachable:
-    /// assert_eq!(Ipv6Addr::new(0x26, 0, 0x1c9, 0, 0, 0xafc8, 0x10, 0x1).is_global(), true);
-    ///
-    /// // However some addresses have been assigned a special meaning
-    /// // that makes them not globally reachable. Some examples are:
-    ///
-    /// // The unspecified address (`::`)
-    /// assert_eq!(Ipv6Addr::UNSPECIFIED.is_global(), false);
-    ///
-    /// // The loopback address (`::1`)
-    /// assert_eq!(Ipv6Addr::LOCALHOST.is_global(), false);
-    ///
-    /// // IPv4-mapped addresses (`::ffff:0:0/96`)
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_global(), false);
-    ///
-    /// // Addresses reserved for benchmarking (`2001:2::/48`)
-    /// assert_eq!(Ipv6Addr::new(0x2001, 2, 0, 0, 0, 0, 0, 1,).is_global(), false);
-    ///
-    /// // Addresses reserved for documentation (`2001:db8::/32`)
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1).is_global(), false);
-    ///
-    /// // Unique local addresses (`fc00::/7`)
-    /// assert_eq!(Ipv6Addr::new(0xfc02, 0, 0, 0, 0, 0, 0, 1).is_global(), false);
-    ///
-    /// // Unicast addresses with link-local scope (`fe80::/10`)
-    /// assert_eq!(Ipv6Addr::new(0xfe81, 0, 0, 0, 0, 0, 0, 1).is_global(), false);
-    ///
-    /// // For a complete overview see the IANA IPv6 Special-Purpose Address Registry.
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_global(&self) -> bool {
-        !(self.is_unspecified()
-            || self.is_loopback()
-            // IPv4-mapped Address (`::ffff:0:0/96`)
-            || matches!(self.segments(), [0, 0, 0, 0, 0, 0xffff, _, _])
-            // IPv4-IPv6 Translat. (`64:ff9b:1::/48`)
-            || matches!(self.segments(), [0x64, 0xff9b, 1, _, _, _, _, _])
-            // Discard-Only Address Block (`100::/64`)
-            || matches!(self.segments(), [0x100, 0, 0, 0, _, _, _, _])
-            // IETF Protocol Assignments (`2001::/23`)
-            || (matches!(self.segments(), [0x2001, b, _, _, _, _, _, _] if b < 0x200)
-                && !(
-                    // Port Control Protocol Anycast (`2001:1::1`)
-                    u128::from_be_bytes(self.octets()) == 0x2001_0001_0000_0000_0000_0000_0000_0001
-                    // Traversal Using Relays around NAT Anycast (`2001:1::2`)
-                    || u128::from_be_bytes(self.octets()) == 0x2001_0001_0000_0000_0000_0000_0000_0002
-                    // AMT (`2001:3::/32`)
-                    || matches!(self.segments(), [0x2001, 3, _, _, _, _, _, _])
-                    // AS112-v6 (`2001:4:112::/48`)
-                    || matches!(self.segments(), [0x2001, 4, 0x112, _, _, _, _, _])
-                    // ORCHIDv2 (`2001:20::/28`)
-                    || matches!(self.segments(), [0x2001, b, _, _, _, _, _, _] if b >= 0x20 && b <= 0x2F)
-                ))
-            || self.is_documentation()
-            || self.is_unique_local()
-            || self.is_unicast_link_local())
-    }
-
-    /// Returns [`true`] if this is a unique local address (`fc00::/7`).
-    ///
-    /// This property is defined in [IETF RFC 4193].
-    ///
-    /// [IETF RFC 4193]: https://tools.ietf.org/html/rfc4193
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unique_local(), false);
-    /// assert_eq!(Ipv6Addr::new(0xfc02, 0, 0, 0, 0, 0, 0, 0).is_unique_local(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unique_local(&self) -> bool {
-        (self.segments()[0] & 0xfe00) == 0xfc00
-    }
-
-    /// Returns [`true`] if this is a unicast address, as defined by [IETF RFC 4291].
-    /// Any address that is not a [multicast address] (`ff00::/8`) is unicast.
-    ///
-    /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
-    /// [multicast address]: Ipv6Addr::is_multicast
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// // The unspecified and loopback addresses are unicast.
-    /// assert_eq!(Ipv6Addr::UNSPECIFIED.is_unicast(), true);
-    /// assert_eq!(Ipv6Addr::LOCALHOST.is_unicast(), true);
-    ///
-    /// // Any address that is not a multicast address (`ff00::/8`) is unicast.
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast(), true);
-    /// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).is_unicast(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unicast(&self) -> bool {
-        !self.is_multicast()
-    }
-
-    /// Returns `true` if the address is a unicast address with link-local scope,
-    /// as defined in [RFC 4291].
-    ///
-    /// A unicast address has link-local scope if it has the prefix `fe80::/10`, as per [RFC 4291 section 2.4].
-    /// Note that this encompasses more addresses than those defined in [RFC 4291 section 2.5.6],
-    /// which describes "Link-Local IPv6 Unicast Addresses" as having the following stricter format:
-    ///
-    /// ```text
-    /// | 10 bits  |         54 bits         |          64 bits           |
-    /// +----------+-------------------------+----------------------------+
-    /// |1111111010|           0             |       interface ID         |
-    /// +----------+-------------------------+----------------------------+
-    /// ```
-    /// So while currently the only addresses with link-local scope an application will encounter are all in `fe80::/64`,
-    /// this might change in the future with the publication of new standards. More addresses in `fe80::/10` could be allocated,
-    /// and those addresses will have link-local scope.
-    ///
-    /// Also note that while [RFC 4291 section 2.5.3] mentions about the [loopback address] (`::1`) that "it is treated as having Link-Local scope",
-    /// this does not mean that the loopback address actually has link-local scope and this method will return `false` on it.
-    ///
-    /// [RFC 4291]: https://tools.ietf.org/html/rfc4291
-    /// [RFC 4291 section 2.4]: https://tools.ietf.org/html/rfc4291#section-2.4
-    /// [RFC 4291 section 2.5.3]: https://tools.ietf.org/html/rfc4291#section-2.5.3
-    /// [RFC 4291 section 2.5.6]: https://tools.ietf.org/html/rfc4291#section-2.5.6
-    /// [loopback address]: Ipv6Addr::LOCALHOST
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// // The loopback address (`::1`) does not actually have link-local scope.
-    /// assert_eq!(Ipv6Addr::LOCALHOST.is_unicast_link_local(), false);
-    ///
-    /// // Only addresses in `fe80::/10` have link-local scope.
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), false);
-    /// assert_eq!(Ipv6Addr::new(0xfe80, 0, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), true);
-    ///
-    /// // Addresses outside the stricter `fe80::/64` also have link-local scope.
-    /// assert_eq!(Ipv6Addr::new(0xfe80, 0, 0, 1, 0, 0, 0, 0).is_unicast_link_local(), true);
-    /// assert_eq!(Ipv6Addr::new(0xfe81, 0, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unicast_link_local(&self) -> bool {
-        (self.segments()[0] & 0xffc0) == 0xfe80
-    }
-
-    /// Returns [`true`] if this is an address reserved for documentation
-    /// (`2001:db8::/32`).
-    ///
-    /// This property is defined in [IETF RFC 3849].
-    ///
-    /// [IETF RFC 3849]: https://tools.ietf.org/html/rfc3849
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_documentation(), false);
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_documentation(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_documentation(&self) -> bool {
-        (self.segments()[0] == 0x2001) && (self.segments()[1] == 0xdb8)
-    }
-
-    /// Returns [`true`] if this is an address reserved for benchmarking (`2001:2::/48`).
-    ///
-    /// This property is defined in [IETF RFC 5180], where it is mistakenly specified as covering the range `2001:0200::/48`.
-    /// This is corrected in [IETF RFC Errata 1752] to `2001:0002::/48`.
-    ///
-    /// [IETF RFC 5180]: https://tools.ietf.org/html/rfc5180
-    /// [IETF RFC Errata 1752]: https://www.rfc-editor.org/errata_search.php?eid=1752
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc613, 0x0).is_benchmarking(), false);
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0x2, 0, 0, 0, 0, 0, 0).is_benchmarking(), true);
-    /// ```
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_benchmarking(&self) -> bool {
-        (self.segments()[0] == 0x2001) && (self.segments()[1] == 0x2) && (self.segments()[2] == 0)
-    }
-
-    /// Returns [`true`] if the address is a globally routable unicast address.
-    ///
-    /// The following return false:
-    ///
-    /// - the loopback address
-    /// - the link-local addresses
-    /// - unique local addresses
-    /// - the unspecified address
-    /// - the address range reserved for documentation
-    ///
-    /// This method returns [`true`] for site-local addresses as per [RFC 4291 section 2.5.7]
-    ///
-    /// ```no_rust
-    /// The special behavior of [the site-local unicast] prefix defined in [RFC3513] must no longer
-    /// be supported in new implementations (i.e., new implementations must treat this prefix as
-    /// Global Unicast).
-    /// ```
-    ///
-    /// [RFC 4291 section 2.5.7]: https://tools.ietf.org/html/rfc4291#section-2.5.7
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast_global(), false);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unicast_global(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_unicast_global(&self) -> bool {
-        self.is_unicast()
-            && !self.is_loopback()
-            && !self.is_unicast_link_local()
-            && !self.is_unique_local()
-            && !self.is_unspecified()
-            && !self.is_documentation()
-            && !self.is_benchmarking()
-    }
-
-    /// Returns the address's multicast scope if the address is multicast.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    ///
-    /// use std::net::{Ipv6Addr, Ipv6MulticastScope};
-    ///
-    /// assert_eq!(
-    ///     Ipv6Addr::new(0xff0e, 0, 0, 0, 0, 0, 0, 0).multicast_scope(),
-    ///     Some(Ipv6MulticastScope::Global)
-    /// );
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).multicast_scope(), None);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use]
-    #[inline]
-    pub const fn multicast_scope(&self) -> Option<Ipv6MulticastScope> {
-        if self.is_multicast() {
-            match self.segments()[0] & 0x000f {
-                1 => Some(Ipv6MulticastScope::InterfaceLocal),
-                2 => Some(Ipv6MulticastScope::LinkLocal),
-                3 => Some(Ipv6MulticastScope::RealmLocal),
-                4 => Some(Ipv6MulticastScope::AdminLocal),
-                5 => Some(Ipv6MulticastScope::SiteLocal),
-                8 => Some(Ipv6MulticastScope::OrganizationLocal),
-                14 => Some(Ipv6MulticastScope::Global),
-                _ => None,
-            }
-        } else {
-            None
-        }
-    }
-
-    /// Returns [`true`] if this is a multicast address (`ff00::/8`).
-    ///
-    /// This property is defined by [IETF RFC 4291].
-    ///
-    /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).is_multicast(), true);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_multicast(), false);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(since = "1.7.0", feature = "ip_17"))]
-    #[must_use]
-    #[inline]
-    pub const fn is_multicast(&self) -> bool {
-        (self.segments()[0] & 0xff00) == 0xff00
-    }
-
-    /// Converts this address to an [`IPv4` address] if it's an [IPv4-mapped] address,
-    /// as defined in [IETF RFC 4291 section 2.5.5.2], otherwise returns [`None`].
-    ///
-    /// `::ffff:a.b.c.d` becomes `a.b.c.d`.
-    /// All addresses *not* starting with `::ffff` will return `None`.
-    ///
-    /// [`IPv4` address]: Ipv4Addr
-    /// [IPv4-mapped]: Ipv6Addr
-    /// [IETF RFC 4291 section 2.5.5.2]: https://tools.ietf.org/html/rfc4291#section-2.5.5.2
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).to_ipv4_mapped(), None);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).to_ipv4_mapped(),
-    ///            Some(Ipv4Addr::new(192, 10, 2, 255)));
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).to_ipv4_mapped(), None);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ipv6_to_ipv4_mapped", since = "1.63.0"))]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[inline]
-    pub const fn to_ipv4_mapped(&self) -> Option<Ipv4Addr> {
-        match self.octets() {
-            [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, a, b, c, d] => {
-                Some(Ipv4Addr::new(a, b, c, d))
-            }
-            _ => None,
-        }
-    }
-
-    /// Converts this address to an [`IPv4` address] if it is either
-    /// an [IPv4-compatible] address as defined in [IETF RFC 4291 section 2.5.5.1],
-    /// or an [IPv4-mapped] address as defined in [IETF RFC 4291 section 2.5.5.2],
-    /// otherwise returns [`None`].
-    ///
-    /// Note that this will return an [`IPv4` address] for the IPv6 loopback address `::1`. Use
-    /// [`Ipv6Addr::to_ipv4_mapped`] to avoid this.
-    ///
-    /// `::a.b.c.d` and `::ffff:a.b.c.d` become `a.b.c.d`. `::1` becomes `0.0.0.1`.
-    /// All addresses *not* starting with either all zeroes or `::ffff` will return `None`.
-    ///
-    /// [`IPv4` address]: Ipv4Addr
-    /// [IPv4-compatible]: Ipv6Addr#ipv4-compatible-ipv6-addresses
-    /// [IPv4-mapped]: Ipv6Addr#ipv4-mapped-ipv6-addresses
-    /// [IETF RFC 4291 section 2.5.5.1]: https://tools.ietf.org/html/rfc4291#section-2.5.5.1
-    /// [IETF RFC 4291 section 2.5.5.2]: https://tools.ietf.org/html/rfc4291#section-2.5.5.2
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{Ipv4Addr, Ipv6Addr};
-    ///
-    /// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).to_ipv4(), None);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).to_ipv4(),
-    ///            Some(Ipv4Addr::new(192, 10, 2, 255)));
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).to_ipv4(),
-    ///            Some(Ipv4Addr::new(0, 0, 0, 1)));
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_50", since = "1.50.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[inline]
-    pub const fn to_ipv4(&self) -> Option<Ipv4Addr> {
-        if let [0, 0, 0, 0, 0, 0 | 0xffff, ab, cd] = self.segments() {
-            let [a, b] = ab.to_be_bytes();
-            let [c, d] = cd.to_be_bytes();
-            Some(Ipv4Addr::new(a, b, c, d))
-        } else {
-            None
-        }
-    }
-
-    /// Converts this address to an `IpAddr::V4` if it is an IPv4-mapped addresses, otherwise it
-    /// returns self wrapped in an `IpAddr::V6`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(ip)]
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1).is_loopback(), false);
-    /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1).to_canonical().is_loopback(), true);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_unstable(feature = "const_ipv6", issue = "76205")
-    )]
-    #[cfg_attr(staged_api, unstable(feature = "ip", issue = "27709"))]
-    #[must_use = "this returns the result of the operation, \
-                  without modifying the original"]
-    #[inline]
-    pub const fn to_canonical(&self) -> IpAddr {
-        if let Some(mapped) = self.to_ipv4_mapped() {
-            return IpAddr::V4(mapped);
-        }
-        IpAddr::V6(*self)
-    }
-
-    /// Returns the sixteen eight-bit integers the IPv6 address consists of.
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).octets(),
-    ///            [255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
-    /// ```
-    #[cfg_attr(
-        staged_api,
-        rustc_const_stable(feature = "const_ip_32", since = "1.32.0")
-    )]
-    #[cfg_attr(staged_api, stable(feature = "ipv6_to_octets", since = "1.12.0"))]
-    #[must_use]
-    #[inline]
-    pub const fn octets(&self) -> [u8; 16] {
-        self.octets
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialEq<IpAddr> for Ipv6Addr {
-    #[inline]
-    fn eq(&self, other: &IpAddr) -> bool {
-        match other {
-            IpAddr::V4(_) => false,
-            IpAddr::V6(v6) => self == v6,
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialEq<Ipv6Addr> for IpAddr {
-    #[inline]
-    fn eq(&self, other: &Ipv6Addr) -> bool {
-        match self {
-            IpAddr::V4(_) => false,
-            IpAddr::V6(v6) => v6 == other,
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl PartialOrd for Ipv6Addr {
-    #[inline]
-    fn partial_cmp(&self, other: &Ipv6Addr) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialOrd<Ipv6Addr> for IpAddr {
-    #[inline]
-    fn partial_cmp(&self, other: &Ipv6Addr) -> Option<Ordering> {
-        match self {
-            IpAddr::V4(_) => Some(Ordering::Less),
-            IpAddr::V6(v6) => v6.partial_cmp(other),
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_cmp", since = "1.16.0"))]
-impl PartialOrd<IpAddr> for Ipv6Addr {
-    #[inline]
-    fn partial_cmp(&self, other: &IpAddr) -> Option<Ordering> {
-        match other {
-            IpAddr::V4(_) => Some(Ordering::Greater),
-            IpAddr::V6(v6) => self.partial_cmp(v6),
-        }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "rust1", since = "1.0.0"))]
-impl Ord for Ipv6Addr {
-    #[inline]
-    fn cmp(&self, other: &Ipv6Addr) -> Ordering {
-        self.segments().cmp(&other.segments())
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "i128", since = "1.26.0"))]
-impl From<Ipv6Addr> for u128 {
-    /// Convert an `Ipv6Addr` into a host byte order `u128`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::new(
-    ///     0x1020, 0x3040, 0x5060, 0x7080,
-    ///     0x90A0, 0xB0C0, 0xD0E0, 0xF00D,
-    /// );
-    /// assert_eq!(0x102030405060708090A0B0C0D0E0F00D_u128, u128::from(addr));
-    /// ```
-    #[inline]
-    fn from(ip: Ipv6Addr) -> u128 {
-        u128::from_be_bytes(ip.octets)
-    }
-}
-#[cfg_attr(staged_api, stable(feature = "i128", since = "1.26.0"))]
-impl From<u128> for Ipv6Addr {
-    /// Convert a host byte order `u128` into an `Ipv6Addr`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::from(0x102030405060708090A0B0C0D0E0F00D_u128);
-    /// assert_eq!(
-    ///     Ipv6Addr::new(
-    ///         0x1020, 0x3040, 0x5060, 0x7080,
-    ///         0x90A0, 0xB0C0, 0xD0E0, 0xF00D,
-    ///     ),
-    ///     addr);
-    /// ```
-    #[inline]
-    fn from(ip: u128) -> Ipv6Addr {
-        Ipv6Addr::from(ip.to_be_bytes())
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ipv6_from_octets", since = "1.9.0"))]
-impl From<[u8; 16]> for Ipv6Addr {
-    /// Creates an `Ipv6Addr` from a sixteen element byte array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::from([
-    ///     25u8, 24u8, 23u8, 22u8, 21u8, 20u8, 19u8, 18u8,
-    ///     17u8, 16u8, 15u8, 14u8, 13u8, 12u8, 11u8, 10u8,
-    /// ]);
-    /// assert_eq!(
-    ///     Ipv6Addr::new(
-    ///         0x1918, 0x1716,
-    ///         0x1514, 0x1312,
-    ///         0x1110, 0x0f0e,
-    ///         0x0d0c, 0x0b0a
-    ///     ),
-    ///     addr
-    /// );
-    /// ```
-    #[inline]
-    fn from(octets: [u8; 16]) -> Ipv6Addr {
-        Ipv6Addr { octets }
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ipv6_from_segments", since = "1.16.0"))]
-impl From<[u16; 8]> for Ipv6Addr {
-    /// Creates an `Ipv6Addr` from an eight element 16-bit array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::Ipv6Addr;
-    ///
-    /// let addr = Ipv6Addr::from([
-    ///     525u16, 524u16, 523u16, 522u16,
-    ///     521u16, 520u16, 519u16, 518u16,
-    /// ]);
-    /// assert_eq!(
-    ///     Ipv6Addr::new(
-    ///         0x20d, 0x20c,
-    ///         0x20b, 0x20a,
-    ///         0x209, 0x208,
-    ///         0x207, 0x206
-    ///     ),
-    ///     addr
-    /// );
-    /// ```
-    #[inline]
-    fn from(segments: [u16; 8]) -> Ipv6Addr {
-        let [a, b, c, d, e, f, g, h] = segments;
-        Ipv6Addr::new(a, b, c, d, e, f, g, h)
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_slice", since = "1.17.0"))]
-impl From<[u8; 16]> for IpAddr {
-    /// Creates an `IpAddr::V6` from a sixteen element byte array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv6Addr};
-    ///
-    /// let addr = IpAddr::from([
-    ///     25u8, 24u8, 23u8, 22u8, 21u8, 20u8, 19u8, 18u8,
-    ///     17u8, 16u8, 15u8, 14u8, 13u8, 12u8, 11u8, 10u8,
-    /// ]);
-    /// assert_eq!(
-    ///     IpAddr::V6(Ipv6Addr::new(
-    ///         0x1918, 0x1716,
-    ///         0x1514, 0x1312,
-    ///         0x1110, 0x0f0e,
-    ///         0x0d0c, 0x0b0a
-    ///     )),
-    ///     addr
-    /// );
-    /// ```
-    #[inline]
-    fn from(octets: [u8; 16]) -> IpAddr {
-        IpAddr::V6(Ipv6Addr::from(octets))
-    }
-}
-
-#[cfg_attr(staged_api, stable(feature = "ip_from_slice", since = "1.17.0"))]
-impl From<[u16; 8]> for IpAddr {
-    /// Creates an `IpAddr::V6` from an eight element 16-bit array.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::net::{IpAddr, Ipv6Addr};
-    ///
-    /// let addr = IpAddr::from([
-    ///     525u16, 524u16, 523u16, 522u16,
-    ///     521u16, 520u16, 519u16, 518u16,
-    /// ]);
-    /// assert_eq!(
-    ///     IpAddr::V6(Ipv6Addr::new(
-    ///         0x20d, 0x20c,
-    ///         0x20b, 0x20a,
-    ///         0x209, 0x208,
-    ///         0x207, 0x206
-    ///     )),
-    ///     addr
-    /// );
-    /// ```
-    #[inline]
-    fn from(segments: [u16; 8]) -> IpAddr {
-        IpAddr::V6(Ipv6Addr::from(segments))
-    }
-}
diff --git a/vendor/rustix/src/net/mod.rs b/vendor/rustix/src/net/mod.rs
index 4a3419737..73ae2f089 100644
--- a/vendor/rustix/src/net/mod.rs
+++ b/vendor/rustix/src/net/mod.rs
@@ -7,36 +7,25 @@
 //! [`wsa_startup`]: https://docs.rs/rustix/*/x86_64-pc-windows-msvc/rustix/net/fn.wsa_startup.html
 //! [`wsa_cleanup`]: https://docs.rs/rustix/*/x86_64-pc-windows-msvc/rustix/net/fn.wsa_cleanup.html
 
-#[cfg(not(feature = "std"))]
-mod addr;
-#[cfg(not(feature = "std"))]
-mod ip;
 mod send_recv;
 mod socket;
 mod socket_addr_any;
 #[cfg(not(any(windows, target_os = "wasi")))]
 mod socketpair;
+mod types;
 #[cfg(windows)]
 mod wsa;
 
 pub mod sockopt;
 
+pub use crate::maybe_polyfill::net::{
+    IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6,
+};
 pub use send_recv::*;
 pub use socket::*;
 pub use socket_addr_any::{SocketAddrAny, SocketAddrStorage};
 #[cfg(not(any(windows, target_os = "wasi")))]
 pub use socketpair::socketpair;
-#[cfg(feature = "std")]
-pub use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
+pub use types::*;
 #[cfg(windows)]
 pub use wsa::{wsa_cleanup, wsa_startup};
-#[cfg(not(feature = "std"))]
-pub use {
-    addr::{SocketAddr, SocketAddrV4, SocketAddrV6},
-    ip::{IpAddr, Ipv4Addr, Ipv6Addr, Ipv6MulticastScope},
-};
-#[cfg(unix)]
-pub use {
-    send_recv::sendto_unix,
-    socket::{bind_unix, connect_unix, SocketAddrUnix},
-};
diff --git a/vendor/rustix/src/net/send_recv.rs b/vendor/rustix/src/net/send_recv/mod.rs
index 439711727..2d55c7f94 100644
--- a/vendor/rustix/src/net/send_recv.rs
+++ b/vendor/rustix/src/net/send_recv/mod.rs
@@ -1,4 +1,4 @@
-//! `recv` and `send`, and variants.
+//! `recv`, `send`, and variants.
 
 #[cfg(unix)]
 use crate::net::SocketAddrUnix;
@@ -8,6 +8,12 @@ use backend::fd::{AsFd, BorrowedFd};
 
 pub use backend::net::send_recv::{RecvFlags, SendFlags};
 
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+mod msg;
+
+#[cfg(not(any(windows, target_os = "redox", target_os = "wasi")))]
+pub use msg::*;
+
 /// `recv(fd, buf, flags)`—Reads data from a socket.
 ///
 /// # References
@@ -318,5 +324,3 @@ pub fn sendto_unix<Fd: AsFd>(
 ) -> io::Result<usize> {
     backend::net::syscalls::sendto_unix(fd.as_fd(), buf, flags, addr)
 }
-
-// TODO: `recvmsg`, `sendmsg`
diff --git a/vendor/rustix/src/net/send_recv/msg.rs b/vendor/rustix/src/net/send_recv/msg.rs
new file mode 100644
index 000000000..916f2a3db
--- /dev/null
+++ b/vendor/rustix/src/net/send_recv/msg.rs
@@ -0,0 +1,751 @@
+//! [`recvmsg`], [`sendmsg`], and related functions.
+
+#![allow(unsafe_code)]
+
+use crate::backend::{self, c};
+use crate::fd::{AsFd, BorrowedFd, OwnedFd};
+use crate::io::{self, IoSlice, IoSliceMut};
+
+use core::iter::FusedIterator;
+use core::marker::PhantomData;
+use core::mem::{size_of, size_of_val, take};
+use core::{ptr, slice};
+
+use super::{RecvFlags, SendFlags, SocketAddrAny, SocketAddrV4, SocketAddrV6};
+
+/// Macro for defining the amount of space used by CMSGs.
+#[macro_export]
+macro_rules! cmsg_space {
+    // Base Rules
+    (ScmRights($len:expr)) => {
+        $crate::net::__cmsg_space(
+            $len * ::core::mem::size_of::<$crate::fd::BorrowedFd<'static>>(),
+        )
+    };
+
+    // Combo Rules
+    (($($($x:tt)*),+)) => {
+        $(
+            cmsg_space!($($x)*) +
+        )+
+        0
+    };
+}
+
+#[doc(hidden)]
+pub fn __cmsg_space(len: usize) -> usize {
+    unsafe { c::CMSG_SPACE(len.try_into().expect("CMSG_SPACE size overflow")) as usize }
+}
+
+/// Ancillary message for [`sendmsg`], [`sendmsg_v4`], [`sendmsg_v6`],
+/// [`sendmsg_unix`], and [`sendmsg_any`].
+#[non_exhaustive]
+pub enum SendAncillaryMessage<'slice, 'fd> {
+    /// Send file descriptors.
+    ScmRights(&'slice [BorrowedFd<'fd>]),
+}
+
+impl SendAncillaryMessage<'_, '_> {
+    /// Get the maximum size of an ancillary message.
+    ///
+    /// This can be helpful in determining the size of the buffer you allocate.
+    pub fn size(&self) -> usize {
+        let total_bytes = match self {
+            Self::ScmRights(slice) => size_of_val(*slice),
+        };
+
+        unsafe {
+            c::CMSG_SPACE(
+                total_bytes
+                    .try_into()
+                    .expect("size too large for CMSG_SPACE"),
+            ) as usize
+        }
+    }
+}
+
+/// Ancillary message for [`recvmsg`].
+#[non_exhaustive]
+pub enum RecvAncillaryMessage<'a> {
+    /// Received file descriptors.
+    ScmRights(AncillaryIter<'a, OwnedFd>),
+}
+
+/// Buffer for sending ancillary messages.
+pub struct SendAncillaryBuffer<'buf, 'slice, 'fd> {
+    /// Raw byte buffer for messages.
+    buffer: &'buf mut [u8],
+
+    /// The amount of the buffer that is used.
+    length: usize,
+
+    /// Phantom data for lifetime of `&'slice [BorrowedFd<'fd>]`.
+    _phantom: PhantomData<&'slice [BorrowedFd<'fd>]>,
+}
+
+impl<'buf> From<&'buf mut [u8]> for SendAncillaryBuffer<'buf, '_, '_> {
+    fn from(buffer: &'buf mut [u8]) -> Self {
+        Self::new(buffer)
+    }
+}
+
+impl Default for SendAncillaryBuffer<'_, '_, '_> {
+    fn default() -> Self {
+        Self::new(&mut [])
+    }
+}
+
+impl<'buf, 'slice, 'fd> SendAncillaryBuffer<'buf, 'slice, 'fd> {
+    /// Create a new, empty `SendAncillaryBuffer` from a raw byte buffer.
+    pub fn new(buffer: &'buf mut [u8]) -> Self {
+        Self {
+            buffer,
+            length: 0,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Returns a pointer to the message data.
+    pub(crate) fn as_control_ptr(&mut self) -> *mut u8 {
+        if self.length > 0 {
+            self.buffer.as_mut_ptr()
+        } else {
+            ptr::null_mut()
+        }
+    }
+
+    /// Returns the length of the message data.
+    pub(crate) fn control_len(&self) -> usize {
+        self.length
+    }
+
+    /// Delete all messages from the buffer.
+    pub fn clear(&mut self) {
+        self.length = 0;
+    }
+
+    /// Add an ancillary message to the buffer.
+    ///
+    /// Returns `true` if the message was added successfully.
+    pub fn push(&mut self, msg: SendAncillaryMessage<'slice, 'fd>) -> bool {
+        match msg {
+            SendAncillaryMessage::ScmRights(fds) => {
+                let fds_bytes =
+                    unsafe { slice::from_raw_parts(fds.as_ptr().cast::<u8>(), size_of_val(fds)) };
+                self.push_ancillary(fds_bytes, c::SOL_SOCKET as _, c::SCM_RIGHTS as _)
+            }
+        }
+    }
+
+    /// Pushes an ancillary message to the buffer.
+    fn push_ancillary(&mut self, source: &[u8], cmsg_level: c::c_int, cmsg_type: c::c_int) -> bool {
+        macro_rules! leap {
+            ($e:expr) => {{
+                match ($e) {
+                    Some(x) => x,
+                    None => return false,
+                }
+            }};
+        }
+
+        // Calculate the length of the message.
+        let source_len = leap!(u32::try_from(source.len()).ok());
+
+        // Calculate the new length of the buffer.
+        let additional_space = unsafe { c::CMSG_SPACE(source_len) };
+        let new_length = leap!(self.length.checked_add(additional_space as usize));
+        let buffer = leap!(self.buffer.get_mut(..new_length));
+
+        // Fill the new part of the buffer with zeroes.
+        buffer[self.length..new_length].fill(0);
+        self.length = new_length;
+
+        // Get the last header in the buffer.
+        let last_header = leap!(messages::Messages::new(buffer).last());
+
+        // Set the header fields.
+        last_header.cmsg_len = unsafe { c::CMSG_LEN(source_len) } as _;
+        last_header.cmsg_level = cmsg_level;
+        last_header.cmsg_type = cmsg_type;
+
+        // Get the pointer to the payload and copy the data.
+        unsafe {
+            let payload = c::CMSG_DATA(last_header);
+            ptr::copy_nonoverlapping(source.as_ptr(), payload, source_len as _);
+        }
+
+        true
+    }
+}
+
+impl<'slice, 'fd> Extend<SendAncillaryMessage<'slice, 'fd>>
+    for SendAncillaryBuffer<'_, 'slice, 'fd>
+{
+    fn extend<T: IntoIterator<Item = SendAncillaryMessage<'slice, 'fd>>>(&mut self, iter: T) {
+        // TODO: This could be optimized to add every message in one go.
+        iter.into_iter().all(|msg| self.push(msg));
+    }
+}
+
+/// Buffer for receiving ancillary messages.
+pub struct RecvAncillaryBuffer<'buf> {
+    /// Raw byte buffer for messages.
+    buffer: &'buf mut [u8],
+
+    /// The portion of the buffer we've read from already.
+    read: usize,
+
+    /// The amount of the buffer that is used.
+    length: usize,
+}
+
+impl<'buf> From<&'buf mut [u8]> for RecvAncillaryBuffer<'buf> {
+    fn from(buffer: &'buf mut [u8]) -> Self {
+        Self::new(buffer)
+    }
+}
+
+impl Default for RecvAncillaryBuffer<'_> {
+    fn default() -> Self {
+        Self::new(&mut [])
+    }
+}
+
+impl<'buf> RecvAncillaryBuffer<'buf> {
+    /// Create a new, empty `RecvAncillaryBuffer` from a raw byte buffer.
+    pub fn new(buffer: &'buf mut [u8]) -> Self {
+        Self {
+            buffer,
+            read: 0,
+            length: 0,
+        }
+    }
+
+    /// Returns a pointer to the message data.
+    pub(crate) fn as_control_ptr(&mut self) -> *mut u8 {
+        self.buffer.as_mut_ptr()
+    }
+
+    /// Returns the length of the message data.
+    pub(crate) fn control_len(&self) -> usize {
+        self.buffer.len()
+    }
+
+    /// Set the length of the message data.
+    ///
+    /// # Safety
+    ///
+    /// The buffer must be filled with valid message data.
+    pub(crate) unsafe fn set_control_len(&mut self, len: usize) {
+        self.length = len;
+        self.read = 0;
+    }
+
+    /// Delete all messages from the buffer.
+    pub(crate) fn clear(&mut self) {
+        self.drain().for_each(drop);
+    }
+
+    /// Drain all messages from the buffer.
+    pub fn drain(&mut self) -> AncillaryDrain<'_> {
+        AncillaryDrain {
+            messages: messages::Messages::new(&mut self.buffer[self.read..][..self.length]),
+            read: &mut self.read,
+            length: &mut self.length,
+        }
+    }
+}
+
+impl Drop for RecvAncillaryBuffer<'_> {
+    fn drop(&mut self) {
+        self.clear();
+    }
+}
+
+/// An iterator that drains messages from a `RecvAncillaryBuffer`.
+pub struct AncillaryDrain<'buf> {
+    /// Inner iterator over messages.
+    messages: messages::Messages<'buf>,
+
+    /// Increment the number of messages we've read.
+    read: &'buf mut usize,
+
+    /// Decrement the total length.
+    length: &'buf mut usize,
+}
+
+impl<'buf> AncillaryDrain<'buf> {
+    /// A closure that converts a message into a `RecvAncillaryMessage`.
+    fn cvt_msg(
+        read: &mut usize,
+        length: &mut usize,
+        msg: &c::cmsghdr,
+    ) -> Option<RecvAncillaryMessage<'buf>> {
+        unsafe {
+            // Advance the "read" pointer.
+            let msg_len = msg.cmsg_len as usize;
+            *read += msg_len;
+            *length -= msg_len;
+
+            // Get a pointer to the payload.
+            let payload = c::CMSG_DATA(msg);
+            let payload_len = msg.cmsg_len as usize - c::CMSG_LEN(0) as usize;
+
+            // Get a mutable slice of the payload.
+            let payload: &'buf mut [u8] = slice::from_raw_parts_mut(payload, payload_len);
+
+            // Determine what type it is.
+            let (level, msg_type) = (msg.cmsg_level, msg.cmsg_type);
+            match (level as _, msg_type as _) {
+                (c::SOL_SOCKET, c::SCM_RIGHTS) => {
+                    // Create an iterator that reads out the file descriptors.
+                    let fds = AncillaryIter::new(payload);
+
+                    Some(RecvAncillaryMessage::ScmRights(fds))
+                }
+                _ => None,
+            }
+        }
+    }
+}
+
+impl<'buf> Iterator for AncillaryDrain<'buf> {
+    type Item = RecvAncillaryMessage<'buf>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        let read = &mut self.read;
+        let length = &mut self.length;
+        self.messages.find_map(|ev| Self::cvt_msg(read, length, ev))
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        let (_, max) = self.messages.size_hint();
+        (0, max)
+    }
+
+    fn fold<B, F>(self, init: B, f: F) -> B
+    where
+        Self: Sized,
+        F: FnMut(B, Self::Item) -> B,
+    {
+        let read = self.read;
+        let length = self.length;
+        self.messages
+            .filter_map(|ev| Self::cvt_msg(read, length, ev))
+            .fold(init, f)
+    }
+
+    fn count(self) -> usize {
+        let read = self.read;
+        let length = self.length;
+        self.messages
+            .filter_map(|ev| Self::cvt_msg(read, length, ev))
+            .count()
+    }
+
+    fn last(self) -> Option<Self::Item>
+    where
+        Self: Sized,
+    {
+        let read = self.read;
+        let length = self.length;
+        self.messages
+            .filter_map(|ev| Self::cvt_msg(read, length, ev))
+            .last()
+    }
+
+    fn collect<B: FromIterator<Self::Item>>(self) -> B
+    where
+        Self: Sized,
+    {
+        let read = self.read;
+        let length = self.length;
+        self.messages
+            .filter_map(|ev| Self::cvt_msg(read, length, ev))
+            .collect()
+    }
+}
+
+impl FusedIterator for AncillaryDrain<'_> {}
+
+/// `sendmsg(msghdr)`—Sends a message on a socket.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/sendmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=sendmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/sendmsg.2
+/// [OpenBSD]: https://man.openbsd.org/sendmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=sendmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/sendmsg
+#[inline]
+pub fn sendmsg(
+    socket: impl AsFd,
+    iov: &[IoSlice<'_>],
+    control: &mut SendAncillaryBuffer<'_, '_, '_>,
+    flags: SendFlags,
+) -> io::Result<usize> {
+    backend::net::syscalls::sendmsg(socket.as_fd(), iov, control, flags)
+}
+
+/// `sendmsg(msghdr)`—Sends a message on a socket to a specific IPv4 address.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/sendmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=sendmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/sendmsg.2
+/// [OpenBSD]: https://man.openbsd.org/sendmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=sendmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/sendmsg
+#[inline]
+pub fn sendmsg_v4(
+    socket: impl AsFd,
+    addr: &SocketAddrV4,
+    iov: &[IoSlice<'_>],
+    control: &mut SendAncillaryBuffer<'_, '_, '_>,
+    flags: SendFlags,
+) -> io::Result<usize> {
+    backend::net::syscalls::sendmsg_v4(socket.as_fd(), addr, iov, control, flags)
+}
+
+/// `sendmsg(msghdr)`—Sends a message on a socket to a specific IPv6 address.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/sendmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=sendmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/sendmsg.2
+/// [OpenBSD]: https://man.openbsd.org/sendmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=sendmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/sendmsg
+#[inline]
+pub fn sendmsg_v6(
+    socket: impl AsFd,
+    addr: &SocketAddrV6,
+    iov: &[IoSlice<'_>],
+    control: &mut SendAncillaryBuffer<'_, '_, '_>,
+    flags: SendFlags,
+) -> io::Result<usize> {
+    backend::net::syscalls::sendmsg_v6(socket.as_fd(), addr, iov, control, flags)
+}
+
+/// `sendmsg(msghdr)`—Sends a message on a socket to a specific Unix-domain
+/// address.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/sendmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=sendmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/sendmsg.2
+/// [OpenBSD]: https://man.openbsd.org/sendmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=sendmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/sendmsg
+#[inline]
+#[cfg(unix)]
+pub fn sendmsg_unix(
+    socket: impl AsFd,
+    addr: &super::SocketAddrUnix,
+    iov: &[IoSlice<'_>],
+    control: &mut SendAncillaryBuffer<'_, '_, '_>,
+    flags: SendFlags,
+) -> io::Result<usize> {
+    backend::net::syscalls::sendmsg_unix(socket.as_fd(), addr, iov, control, flags)
+}
+
+/// `sendmsg(msghdr)`—Sends a message on a socket to a specific address.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/sendmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=sendmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/sendmsg.2
+/// [OpenBSD]: https://man.openbsd.org/sendmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=sendmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/sendmsg
+#[inline]
+pub fn sendmsg_any(
+    socket: impl AsFd,
+    addr: Option<&SocketAddrAny>,
+    iov: &[IoSlice<'_>],
+    control: &mut SendAncillaryBuffer<'_, '_, '_>,
+    flags: SendFlags,
+) -> io::Result<usize> {
+    match addr {
+        None => backend::net::syscalls::sendmsg(socket.as_fd(), iov, control, flags),
+        Some(SocketAddrAny::V4(addr)) => {
+            backend::net::syscalls::sendmsg_v4(socket.as_fd(), addr, iov, control, flags)
+        }
+        Some(SocketAddrAny::V6(addr)) => {
+            backend::net::syscalls::sendmsg_v6(socket.as_fd(), addr, iov, control, flags)
+        }
+        #[cfg(unix)]
+        Some(SocketAddrAny::Unix(addr)) => {
+            backend::net::syscalls::sendmsg_unix(socket.as_fd(), addr, iov, control, flags)
+        }
+    }
+}
+
+/// `recvmsg(msghdr)`—Receives a message from a socket.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///  - [Apple]
+///  - [FreeBSD]
+///  - [NetBSD]
+///  - [OpenBSD]
+///  - [DragonFly BSD]
+///  - [illumos]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/recvmsg.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/recvmsg.2.html
+/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/recvmsg.2.html
+/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=recvmsg&sektion=2
+/// [NetBSD]: https://man.netbsd.org/recvmsg.2
+/// [OpenBSD]: https://man.openbsd.org/recvmsg.2
+/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=recvmsg&section=2
+/// [illumos]: https://illumos.org/man/3SOCKET/recvmsg
+#[inline]
+pub fn recvmsg(
+    socket: impl AsFd,
+    iov: &mut [IoSliceMut<'_>],
+    control: &mut RecvAncillaryBuffer<'_>,
+    flags: RecvFlags,
+) -> io::Result<RecvMsgReturn> {
+    backend::net::syscalls::recvmsg(socket.as_fd(), iov, control, flags)
+}
+
+/// The result of a successful [`recvmsg`] call.
+pub struct RecvMsgReturn {
+    /// The number of bytes received.
+    pub bytes: usize,
+
+    /// The flags received.
+    pub flags: RecvFlags,
+
+    /// The address of the socket we received from, if any.
+    pub address: Option<SocketAddrAny>,
+}
+
+/// An iterator over data in an ancillary buffer.
+pub struct AncillaryIter<'data, T> {
+    /// The data we're iterating over.
+    data: &'data mut [u8],
+
+    /// The raw data we're removing.
+    _marker: PhantomData<T>,
+}
+
+impl<'data, T> AncillaryIter<'data, T> {
+    /// Create a new iterator over data in an ancillary buffer.
+    ///
+    /// # Safety
+    ///
+    /// The buffer must contain valid ancillary data.
+    unsafe fn new(data: &'data mut [u8]) -> Self {
+        assert_eq!(data.len() % size_of::<T>(), 0);
+
+        Self {
+            data,
+            _marker: PhantomData,
+        }
+    }
+}
+
+impl<'data, T> Drop for AncillaryIter<'data, T> {
+    fn drop(&mut self) {
+        self.for_each(drop);
+    }
+}
+
+impl<T> Iterator for AncillaryIter<'_, T> {
+    type Item = T;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        // See if there is a next item.
+        if self.data.len() < size_of::<T>() {
+            return None;
+        }
+
+        // Get the next item.
+        let item = unsafe { self.data.as_ptr().cast::<T>().read_unaligned() };
+
+        // Move forward.
+        let data = take(&mut self.data);
+        self.data = &mut data[size_of::<T>()..];
+
+        Some(item)
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        let len = self.len();
+        (len, Some(len))
+    }
+
+    fn count(self) -> usize {
+        self.len()
+    }
+
+    fn last(mut self) -> Option<Self::Item> {
+        self.next_back()
+    }
+}
+
+impl<T> FusedIterator for AncillaryIter<'_, T> {}
+
+impl<T> ExactSizeIterator for AncillaryIter<'_, T> {
+    fn len(&self) -> usize {
+        self.data.len() / size_of::<T>()
+    }
+}
+
+impl<T> DoubleEndedIterator for AncillaryIter<'_, T> {
+    fn next_back(&mut self) -> Option<Self::Item> {
+        // See if there is a next item.
+        if self.data.len() < size_of::<T>() {
+            return None;
+        }
+
+        // Get the next item.
+        let item = unsafe {
+            let ptr = self.data.as_ptr().add(self.data.len() - size_of::<T>());
+            ptr.cast::<T>().read_unaligned()
+        };
+
+        // Move forward.
+        let len = self.data.len();
+        let data = take(&mut self.data);
+        self.data = &mut data[..len - size_of::<T>()];
+
+        Some(item)
+    }
+}
+
+mod messages {
+    use crate::backend::c;
+    use core::iter::FusedIterator;
+    use core::marker::PhantomData;
+    use core::mem::zeroed;
+    use core::ptr::NonNull;
+
+    /// An iterator over the messages in an ancillary buffer.
+    pub(super) struct Messages<'buf> {
+        /// The message header we're using to iterator over the messages.
+        msghdr: c::msghdr,
+
+        /// The current pointer to the next message header to return.
+        ///
+        /// This has a lifetime of `'buf`.
+        header: Option<NonNull<c::cmsghdr>>,
+
+        /// Capture the original lifetime of the buffer.
+        _buffer: PhantomData<&'buf mut [u8]>,
+    }
+
+    impl<'buf> Messages<'buf> {
+        /// Create a new iterator over messages from a byte buffer.
+        pub(super) fn new(buf: &'buf mut [u8]) -> Self {
+            let msghdr = {
+                let mut h: c::msghdr = unsafe { zeroed() };
+                h.msg_control = buf.as_mut_ptr().cast();
+                h.msg_controllen = buf.len().try_into().expect("buffer too large for msghdr");
+                h
+            };
+
+            // Get the first header.
+            let header = NonNull::new(unsafe { c::CMSG_FIRSTHDR(&msghdr) });
+
+            Self {
+                msghdr,
+                header,
+                _buffer: PhantomData,
+            }
+        }
+    }
+
+    impl<'a> Iterator for Messages<'a> {
+        type Item = &'a mut c::cmsghdr;
+
+        #[inline]
+        fn next(&mut self) -> Option<Self::Item> {
+            // Get the current header.
+            let header = self.header?;
+
+            // Get the next header.
+            self.header = NonNull::new(unsafe { c::CMSG_NXTHDR(&self.msghdr, header.as_ptr()) });
+
+            // If the headers are equal, we're done.
+            if Some(header) == self.header {
+                self.header = None;
+            }
+
+            // SAFETY: The lifetime of `header` is tied to this.
+            Some(unsafe { &mut *header.as_ptr() })
+        }
+
+        fn size_hint(&self) -> (usize, Option<usize>) {
+            if self.header.is_some() {
+                // The remaining buffer *could* be filled with zero-length
+                // messages.
+                let max_size = unsafe { c::CMSG_LEN(0) } as usize;
+                let remaining_count = self.msghdr.msg_controllen as usize / max_size;
+                (1, Some(remaining_count))
+            } else {
+                (0, Some(0))
+            }
+        }
+    }
+
+    impl FusedIterator for Messages<'_> {}
+}
diff --git a/vendor/rustix/src/net/socket.rs b/vendor/rustix/src/net/socket.rs
index dbfb391ba..23cc00aed 100644
--- a/vendor/rustix/src/net/socket.rs
+++ b/vendor/rustix/src/net/socket.rs
@@ -3,19 +3,9 @@ use crate::net::{SocketAddr, SocketAddrAny, SocketAddrV4, SocketAddrV6};
 use crate::{backend, io};
 use backend::fd::{AsFd, BorrowedFd};
 
+pub use crate::net::{AddressFamily, Protocol, Shutdown, SocketFlags, SocketType};
 #[cfg(unix)]
 pub use backend::net::addr::SocketAddrUnix;
-pub use backend::net::types::{AddressFamily, Protocol, Shutdown, SocketFlags, SocketType};
-
-/// Compatibility alias for `SocketFlags`. Use `SocketFlags` instead of this.
-pub type AcceptFlags = SocketFlags;
-
-impl Default for Protocol {
-    #[inline]
-    fn default() -> Self {
-        Self::IP
-    }
-}
 
 /// `socket(domain, type_, protocol)`—Creates a socket.
 ///
@@ -50,7 +40,11 @@ impl Default for Protocol {
 /// [illumos]: https://illumos.org/man/3SOCKET/socket
 /// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Creating-a-Socket.html
 #[inline]
-pub fn socket(domain: AddressFamily, type_: SocketType, protocol: Protocol) -> io::Result<OwnedFd> {
+pub fn socket(
+    domain: AddressFamily,
+    type_: SocketType,
+    protocol: Option<Protocol>,
+) -> io::Result<OwnedFd> {
     backend::net::syscalls::socket(domain, type_, protocol)
 }
 
@@ -93,7 +87,7 @@ pub fn socket_with(
     domain: AddressFamily,
     type_: SocketType,
     flags: SocketFlags,
-    protocol: Protocol,
+    protocol: Option<Protocol>,
 ) -> io::Result<OwnedFd> {
     backend::net::syscalls::socket_with(domain, type_, flags, protocol)
 }
diff --git a/vendor/rustix/src/net/socket_addr_any.rs b/vendor/rustix/src/net/socket_addr_any.rs
index 403ad11c2..7cb124e4c 100644
--- a/vendor/rustix/src/net/socket_addr_any.rs
+++ b/vendor/rustix/src/net/socket_addr_any.rs
@@ -1,7 +1,7 @@
 //! A socket address for any kind of socket.
 //!
 //! This is similar to [`std::net::SocketAddr`], but also supports Unix-domain
-//! socket addresses.
+//! socket addresses on Unix.
 //!
 //! # Safety
 //!
diff --git a/vendor/rustix/src/net/socketpair.rs b/vendor/rustix/src/net/socketpair.rs
index b2d46060e..7228e716b 100644
--- a/vendor/rustix/src/net/socketpair.rs
+++ b/vendor/rustix/src/net/socketpair.rs
@@ -2,7 +2,8 @@ use crate::fd::OwnedFd;
 use crate::net::{AddressFamily, Protocol, SocketFlags, SocketType};
 use crate::{backend, io};
 
-/// `socketpair(domain, type_ | accept_flags, protocol)`
+/// `socketpair(domain, type_ | accept_flags, protocol)`—Create a pair of
+/// sockets that are connected to each other.
 ///
 /// # References
 ///  - [POSIX]
@@ -29,7 +30,7 @@ pub fn socketpair(
     domain: AddressFamily,
     type_: SocketType,
     flags: SocketFlags,
-    protocol: Protocol,
+    protocol: Option<Protocol>,
 ) -> io::Result<(OwnedFd, OwnedFd)> {
     backend::net::syscalls::socketpair(domain, type_, flags, protocol)
 }
diff --git a/vendor/rustix/src/net/sockopt.rs b/vendor/rustix/src/net/sockopt.rs
index 26de89e0a..53e73e64b 100644
--- a/vendor/rustix/src/net/sockopt.rs
+++ b/vendor/rustix/src/net/sockopt.rs
@@ -8,10 +8,24 @@
 
 use crate::net::{Ipv4Addr, Ipv6Addr, SocketType};
 use crate::{backend, io};
+use backend::c;
 use backend::fd::AsFd;
 use core::time::Duration;
 
-pub use backend::net::types::Timeout;
+/// Timeout identifier for use with [`set_socket_timeout`] and
+/// [`get_socket_timeout`].
+///
+/// [`set_socket_timeout`]: crate::net::sockopt::set_socket_timeout.
+/// [`get_socket_timeout`]: crate::net::sockopt::get_socket_timeout.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum Timeout {
+    /// `SO_RCVTIMEO`—Timeout for receiving.
+    Recv = c::SO_RCVTIMEO as _,
+
+    /// `SO_SNDTIMEO`—Timeout for sending.
+    Send = c::SO_SNDTIMEO as _,
+}
 
 /// `getsockopt(fd, SOL_SOCKET, SO_TYPE)`—Returns the type of a socket.
 ///
@@ -249,7 +263,7 @@ pub fn get_socket_linger<Fd: AsFd>(fd: Fd) -> io::Result<Option<Duration>> {
 ///
 /// [Linux `setsockopt`]: https://man7.org/linux/man-pages/man2/setsockopt.2.html
 /// [Linux `socket`]: https://man7.org/linux/man-pages/man7/socket.7.html
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(linux_kernel)]
 #[inline]
 #[doc(alias = "SO_PASSCRED")]
 pub fn set_socket_passcred<Fd: AsFd>(fd: Fd, passcred: bool) -> io::Result<()> {
@@ -264,7 +278,7 @@ pub fn set_socket_passcred<Fd: AsFd>(fd: Fd, passcred: bool) -> io::Result<()> {
 ///
 /// [Linux `getsockopt`]: https://man7.org/linux/man-pages/man2/getsockopt.2.html
 /// [Linux `socket`]: https://man7.org/linux/man-pages/man7/socket.7.html
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(linux_kernel)]
 #[inline]
 #[doc(alias = "SO_PASSCRED")]
 pub fn get_socket_passcred<Fd: AsFd>(fd: Fd) -> io::Result<bool> {
@@ -427,8 +441,8 @@ pub fn get_socket_error<Fd: AsFd>(fd: Fd) -> io::Result<Result<(), io::Errno>> {
 #[cfg(any(apple, target_os = "freebsd"))]
 #[doc(alias = "SO_NOSIGPIPE")]
 #[inline]
-pub fn getsockopt_nosigpipe<Fd: AsFd>(fd: Fd) -> io::Result<bool> {
-    backend::net::syscalls::sockopt::getsockopt_nosigpipe(fd.as_fd())
+pub fn get_socket_nosigpipe<Fd: AsFd>(fd: Fd) -> io::Result<bool> {
+    backend::net::syscalls::sockopt::get_socket_nosigpipe(fd.as_fd())
 }
 
 /// `setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, val)`
@@ -466,8 +480,8 @@ pub fn getsockopt_nosigpipe<Fd: AsFd>(fd: Fd) -> io::Result<bool> {
 #[cfg(any(apple, target_os = "freebsd"))]
 #[doc(alias = "SO_NOSIGPIPE")]
 #[inline]
-pub fn setsockopt_nosigpipe<Fd: AsFd>(fd: Fd, val: bool) -> io::Result<()> {
-    backend::net::syscalls::sockopt::setsockopt_nosigpipe(fd.as_fd(), val)
+pub fn set_socket_nosigpipe<Fd: AsFd>(fd: Fd, val: bool) -> io::Result<()> {
+    backend::net::syscalls::sockopt::set_socket_nosigpipe(fd.as_fd(), val)
 }
 
 /// `setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, keepalive)`
@@ -1614,3 +1628,13 @@ pub fn set_tcp_nodelay<Fd: AsFd>(fd: Fd, nodelay: bool) -> io::Result<()> {
 pub fn get_tcp_nodelay<Fd: AsFd>(fd: Fd) -> io::Result<bool> {
     backend::net::syscalls::sockopt::get_tcp_nodelay(fd.as_fd())
 }
+
+#[test]
+fn test_sizes() {
+    use c::c_int;
+    use core::mem::size_of;
+
+    // Backend code needs to cast these to `c_int` so make sure that cast
+    // isn't lossy.
+    assert_eq!(size_of::<Timeout>(), size_of::<c_int>());
+}
diff --git a/vendor/rustix/src/net/types.rs b/vendor/rustix/src/net/types.rs
new file mode 100644
index 000000000..95fa931a1
--- /dev/null
+++ b/vendor/rustix/src/net/types.rs
@@ -0,0 +1,1299 @@
+#![allow(unsafe_code)]
+
+use crate::backend::c;
+use bitflags::bitflags;
+
+/// A type for holding raw integer socket types.
+#[doc(hidden)]
+pub type RawSocketType = u32;
+
+/// `SOCK_*` constants for use with [`socket`].
+///
+/// [`socket`]: crate::net::socket()
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct SocketType(pub(crate) RawSocketType);
+
+#[rustfmt::skip]
+impl SocketType {
+    /// `SOCK_STREAM`
+    pub const STREAM: Self = Self(c::SOCK_STREAM as _);
+
+    /// `SOCK_DGRAM`
+    pub const DGRAM: Self = Self(c::SOCK_DGRAM as _);
+
+    /// `SOCK_SEQPACKET`
+    pub const SEQPACKET: Self = Self(c::SOCK_SEQPACKET as _);
+
+    /// `SOCK_RAW`
+    pub const RAW: Self = Self(c::SOCK_RAW as _);
+
+    /// `SOCK_RDM`
+    #[cfg(not(target_os = "haiku"))]
+    pub const RDM: Self = Self(c::SOCK_RDM as _);
+
+    /// Constructs a `SocketType` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawSocketType) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `SocketType`.
+    #[inline]
+    pub const fn as_raw(self) -> RawSocketType {
+        self.0
+    }
+}
+
+/// A type for holding raw integer address families.
+#[doc(hidden)]
+pub type RawAddressFamily = c::sa_family_t;
+
+/// `AF_*` constants.
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+pub struct AddressFamily(pub(crate) RawAddressFamily);
+
+#[rustfmt::skip]
+#[allow(non_upper_case_globals)]
+impl AddressFamily {
+    /// `AF_UNSPEC`
+    pub const UNSPEC: Self = Self(c::AF_UNSPEC as _);
+    /// `AF_INET`
+    ///
+    /// # References
+    ///  - [Linux]
+    ///
+    /// [Linux]: https://man7.org/linux/man-pages/man7/ip.7.html>
+    pub const INET: Self = Self(c::AF_INET as _);
+    /// `AF_INET6`
+    ///
+    /// # References
+    ///  - [Linux]
+    ///
+    /// [Linux]: https://man7.org/linux/man-pages/man7/ipv6.7.html
+    pub const INET6: Self = Self(c::AF_INET6 as _);
+    /// `AF_NETLINK`
+    ///
+    /// # References
+    ///  - [Linux]
+    ///
+    /// [Linux]: https://man7.org/linux/man-pages/man7/netlink.7.html
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const NETLINK: Self = Self(c::AF_NETLINK as _);
+    /// `AF_UNIX`, aka `AF_LOCAL`
+    #[doc(alias = "LOCAL")]
+    pub const UNIX: Self = Self(c::AF_UNIX as _);
+    /// `AF_AX25`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const AX25: Self = Self(c::AF_AX25 as _);
+    /// `AF_IPX`
+    pub const IPX: Self = Self(c::AF_IPX as _);
+    /// `AF_APPLETALK`
+    pub const APPLETALK: Self = Self(c::AF_APPLETALK as _);
+    /// `AF_NETROM`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const NETROM: Self = Self(c::AF_NETROM as _);
+    /// `AF_BRIDGE`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const BRIDGE: Self = Self(c::AF_BRIDGE as _);
+    /// `AF_ATMPVC`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const ATMPVC: Self = Self(c::AF_ATMPVC as _);
+    /// `AF_X25`
+    #[cfg(not(any(
+        bsd,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const X25: Self = Self(c::AF_X25 as _);
+    /// `AF_ROSE`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const ROSE: Self = Self(c::AF_ROSE as _);
+    /// `AF_DECnet`
+    #[cfg(not(target_os = "haiku"))]
+    pub const DECnet: Self = Self(c::AF_DECnet as _);
+    /// `AF_NETBEUI`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const NETBEUI: Self = Self(c::AF_NETBEUI as _);
+    /// `AF_SECURITY`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const SECURITY: Self = Self(c::AF_SECURITY as _);
+    /// `AF_KEY`
+    #[cfg(not(any(
+        bsd,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const KEY: Self = Self(c::AF_KEY as _);
+    /// `AF_PACKET`
+    ///
+    /// # References
+    ///  - [Linux]
+    ///
+    /// [Linux]: https://man7.org/linux/man-pages/man7/packet.7.html
+    #[cfg(not(any(
+        bsd,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const PACKET: Self = Self(c::AF_PACKET as _);
+    /// `AF_ASH`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const ASH: Self = Self(c::AF_ASH as _);
+    /// `AF_ECONET`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const ECONET: Self = Self(c::AF_ECONET as _);
+    /// `AF_ATMSVC`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const ATMSVC: Self = Self(c::AF_ATMSVC as _);
+    /// `AF_RDS`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const RDS: Self = Self(c::AF_RDS as _);
+    /// `AF_SNA`
+    #[cfg(not(target_os = "haiku"))]
+    pub const SNA: Self = Self(c::AF_SNA as _);
+    /// `AF_IRDA`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        target_os = "haiku",
+    )))]
+    pub const IRDA: Self = Self(c::AF_IRDA as _);
+    /// `AF_PPPOX`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const PPPOX: Self = Self(c::AF_PPPOX as _);
+    /// `AF_WANPIPE`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const WANPIPE: Self = Self(c::AF_WANPIPE as _);
+    /// `AF_LLC`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const LLC: Self = Self(c::AF_LLC as _);
+    /// `AF_CAN`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const CAN: Self = Self(c::AF_CAN as _);
+    /// `AF_TIPC`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const TIPC: Self = Self(c::AF_TIPC as _);
+    /// `AF_BLUETOOTH`
+    #[cfg(not(any(apple, solarish, windows)))]
+    pub const BLUETOOTH: Self = Self(c::AF_BLUETOOTH as _);
+    /// `AF_IUCV`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const IUCV: Self = Self(c::AF_IUCV as _);
+    /// `AF_RXRPC`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const RXRPC: Self = Self(c::AF_RXRPC as _);
+    /// `AF_ISDN`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const ISDN: Self = Self(c::AF_ISDN as _);
+    /// `AF_PHONET`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const PHONET: Self = Self(c::AF_PHONET as _);
+    /// `AF_IEEE802154`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "haiku",
+    )))]
+    pub const IEEE802154: Self = Self(c::AF_IEEE802154 as _);
+    /// `AF_802`
+    #[cfg(solarish)]
+    pub const EIGHT_ZERO_TWO: Self = Self(c::AF_802 as _);
+    #[cfg(target_os = "fuchsia")]
+    /// `AF_ALG`
+    pub const ALG: Self = Self(c::AF_ALG as _);
+    #[cfg(any(target_os = "freebsd", target_os = "netbsd", target_os = "nto"))]
+    /// `AF_ARP`
+    pub const ARP: Self = Self(c::AF_ARP as _);
+    /// `AF_ATM`
+    #[cfg(freebsdlike)]
+    pub const ATM: Self = Self(c::AF_ATM as _);
+    /// `AF_CAIF`
+    #[cfg(any(target_os = "android", target_os = "emscripten", target_os = "fuchsia"))]
+    pub const CAIF: Self = Self(c::AF_CAIF as _);
+    /// `AF_CCITT`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const CCITT: Self = Self(c::AF_CCITT as _);
+    /// `AF_CHAOS`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const CHAOS: Self = Self(c::AF_CHAOS as _);
+    /// `AF_CNT`
+    #[cfg(any(bsd, target_os = "nto"))]
+    pub const CNT: Self = Self(c::AF_CNT as _);
+    /// `AF_COIP`
+    #[cfg(any(bsd, target_os = "nto"))]
+    pub const COIP: Self = Self(c::AF_COIP as _);
+    /// `AF_DATAKIT`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const DATAKIT: Self = Self(c::AF_DATAKIT as _);
+    /// `AF_DLI`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "haiku", target_os = "nto"))]
+    pub const DLI: Self = Self(c::AF_DLI as _);
+    /// `AF_E164`
+    #[cfg(any(bsd, target_os = "nto"))]
+    pub const E164: Self = Self(c::AF_E164 as _);
+    /// `AF_ECMA`
+    #[cfg(any(apple, freebsdlike, solarish, target_os = "aix", target_os = "nto", target_os = "openbsd"))]
+    pub const ECMA: Self = Self(c::AF_ECMA as _);
+    /// `AF_ENCAP`
+    #[cfg(target_os = "openbsd")]
+    pub const ENCAP: Self = Self(c::AF_ENCAP as _);
+    /// `AF_FILE`
+    #[cfg(solarish)]
+    pub const FILE: Self = Self(c::AF_FILE as _);
+    /// `AF_GOSIP`
+    #[cfg(solarish)]
+    pub const GOSIP: Self = Self(c::AF_GOSIP as _);
+    /// `AF_HYLINK`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const HYLINK: Self = Self(c::AF_HYLINK as _);
+    /// `AF_IB`
+    #[cfg(any(target_os = "emscripten", target_os = "fuchsia"))]
+    pub const IB: Self = Self(c::AF_IB as _);
+    /// `AF_IMPLINK`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const IMPLINK: Self = Self(c::AF_IMPLINK as _);
+    /// `AF_IEEE80211`
+    #[cfg(any(apple, freebsdlike, linuxlike, target_os = "netbsd"))]
+    pub const IEEE80211: Self = Self(c::AF_IEEE80211 as _);
+    /// `AF_INET6_SDP`
+    #[cfg(target_os = "freebsd")]
+    pub const INET6_SDP: Self = Self(c::AF_INET6_SDP as _);
+    /// `AF_INET_OFFLOAD`
+    #[cfg(solarish)]
+    pub const INET_OFFLOAD: Self = Self(c::AF_INET_OFFLOAD as _);
+    /// `AF_INET_SDP`
+    #[cfg(target_os = "freebsd")]
+    pub const INET_SDP: Self = Self(c::AF_INET_SDP as _);
+    /// `AF_INTF`
+    #[cfg(target_os = "aix")]
+    pub const INTF: Self = Self(c::AF_INTF as _);
+    /// `AF_ISO`
+    #[cfg(any(bsd, target_os = "aix", target_os = "nto"))]
+    pub const ISO: Self = Self(c::AF_ISO as _);
+    /// `AF_LAT`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const LAT: Self = Self(c::AF_LAT as _);
+    /// `AF_LINK`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "haiku", target_os = "nto"))]
+    pub const LINK: Self = Self(c::AF_LINK as _);
+    /// `AF_MPLS`
+    #[cfg(any(netbsdlike, target_os = "dragonfly", target_os = "emscripten", target_os = "fuchsia"))]
+    pub const MPLS: Self = Self(c::AF_MPLS as _);
+    /// `AF_NATM`
+    #[cfg(any(bsd, target_os = "aix", target_os = "nto"))]
+    pub const NATM: Self = Self(c::AF_NATM as _);
+    /// `AF_NBS`
+    #[cfg(solarish)]
+    pub const NBS: Self = Self(c::AF_NBS as _);
+    /// `AF_NCA`
+    #[cfg(solarish)]
+    pub const NCA: Self = Self(c::AF_NCA as _);
+    /// `AF_NDD`
+    #[cfg(target_os = "aix")]
+    pub const NDD: Self = Self(c::AF_NDD as _);
+    /// `AF_NDRV`
+    #[cfg(apple)]
+    pub const NDRV: Self = Self(c::AF_NDRV as _);
+    /// `AF_NETBIOS`
+    #[cfg(any(apple, freebsdlike))]
+    pub const NETBIOS: Self = Self(c::AF_NETBIOS as _);
+    /// `AF_NETGRAPH`
+    #[cfg(freebsdlike)]
+    pub const NETGRAPH: Self = Self(c::AF_NETGRAPH as _);
+    /// `AF_NIT`
+    #[cfg(solarish)]
+    pub const NIT: Self = Self(c::AF_NIT as _);
+    /// `AF_NOTIFY`
+    #[cfg(target_os = "haiku")]
+    pub const NOTIFY: Self = Self(c::AF_NOTIFY as _);
+    /// `AF_NFC`
+    #[cfg(any(target_os = "emscripten", target_os = "fuchsia"))]
+    pub const NFC: Self = Self(c::AF_NFC as _);
+    /// `AF_NS`
+    #[cfg(any(apple, solarish, netbsdlike, target_os = "aix", target_os = "nto"))]
+    pub const NS: Self = Self(c::AF_NS as _);
+    /// `AF_OROUTE`
+    #[cfg(target_os = "netbsd")]
+    pub const OROUTE: Self = Self(c::AF_OROUTE as _);
+    /// `AF_OSI`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const OSI: Self = Self(c::AF_OSI as _);
+    /// `AF_OSINET`
+    #[cfg(solarish)]
+    pub const OSINET: Self = Self(c::AF_OSINET as _);
+    /// `AF_POLICY`
+    #[cfg(solarish)]
+    pub const POLICY: Self = Self(c::AF_POLICY as _);
+    /// `AF_PPP`
+    #[cfg(apple)]
+    pub const PPP: Self = Self(c::AF_PPP as _);
+    /// `AF_PUP`
+    #[cfg(any(bsd, solarish, target_os = "aix", target_os = "nto"))]
+    pub const PUP: Self = Self(c::AF_PUP as _);
+    /// `AF_RIF`
+    #[cfg(target_os = "aix")]
+    pub const RIF: Self = Self(c::AF_RIF as _);
+    /// `AF_ROUTE`
+    #[cfg(any(bsd, solarish, target_os = "android", target_os = "emscripten", target_os = "fuchsia", target_os = "haiku", target_os = "nto"))]
+    pub const ROUTE: Self = Self(c::AF_ROUTE as _);
+    /// `AF_SCLUSTER`
+    #[cfg(target_os = "freebsd")]
+    pub const SCLUSTER: Self = Self(c::AF_SCLUSTER as _);
+    /// `AF_SIP`
+    #[cfg(any(apple, target_os = "freebsd", target_os = "opensbd"))]
+    pub const SIP: Self = Self(c::AF_SIP as _);
+    /// `AF_SLOW`
+    #[cfg(target_os = "freebsd")]
+    pub const SLOW: Self = Self(c::AF_SLOW as _);
+    /// `AF_SYS_CONTROL`
+    #[cfg(apple)]
+    pub const SYS_CONTROL: Self = Self(c::AF_SYS_CONTROL as _);
+    /// `AF_SYSTEM`
+    #[cfg(apple)]
+    pub const SYSTEM: Self = Self(c::AF_SYSTEM as _);
+    /// `AF_TRILL`
+    #[cfg(solarish)]
+    pub const TRILL: Self = Self(c::AF_TRILL as _);
+    /// `AF_UTUN`
+    #[cfg(apple)]
+    pub const UTUN: Self = Self(c::AF_UTUN as _);
+    /// `AF_VSOCK`
+    #[cfg(any(apple, target_os = "emscripten", target_os = "fuchsia"))]
+    pub const VSOCK: Self = Self(c::AF_VSOCK as _);
+
+    /// Constructs a `AddressFamily` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawAddressFamily) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `AddressFamily`.
+    #[inline]
+    pub const fn as_raw(self) -> RawAddressFamily {
+        self.0
+    }
+}
+
+/// A type for holding raw integer protocols.
+#[doc(hidden)]
+pub type RawProtocol = core::num::NonZeroU32;
+
+/// `IPPROTO_*` and other constants for use with [`socket`], [`socket_with`],
+/// and [`socketpair`] when a nondefault value is desired. See the [`ipproto`],
+/// [`sysproto`], and [`netlink`] modules for possible values.
+///
+/// For the default values, such as `IPPROTO_IP` or `NETLINK_ROUTE`, pass
+/// `None` as the `protocol` argument in these functions.
+///
+/// [`socket`]: crate::net::socket()
+/// [`socket_with`]: crate::net::socket_with
+/// [`socketpair`]: crate::net::socketpair()
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(transparent)]
+#[doc(alias = "IPPROTO_IP")]
+#[doc(alias = "NETLINK_ROUTE")]
+pub struct Protocol(pub(crate) RawProtocol);
+
+/// `IPPROTO_*` constants.
+///
+/// For `IPPROTO_IP`, pass `None` as the `protocol` argument.
+pub mod ipproto {
+    use super::{Protocol, RawProtocol};
+    use crate::backend::c;
+
+    /// `IPPROTO_ICMP`
+    pub const ICMP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ICMP as _) });
+    /// `IPPROTO_IGMP`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const IGMP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_IGMP as _) });
+    /// `IPPROTO_IPIP`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const IPIP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_IPIP as _) });
+    /// `IPPROTO_TCP`
+    pub const TCP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_TCP as _) });
+    /// `IPPROTO_EGP`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const EGP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_EGP as _) });
+    /// `IPPROTO_PUP`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const PUP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_PUP as _) });
+    /// `IPPROTO_UDP`
+    pub const UDP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_UDP as _) });
+    /// `IPPROTO_IDP`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const IDP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_IDP as _) });
+    /// `IPPROTO_TP`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const TP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_TP as _) });
+    /// `IPPROTO_DCCP`
+    #[cfg(not(any(
+        apple,
+        solarish,
+        windows,
+        target_os = "dragonfly",
+        target_os = "haiku",
+        target_os = "openbsd",
+    )))]
+    pub const DCCP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_DCCP as _) });
+    /// `IPPROTO_IPV6`
+    pub const IPV6: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_IPV6 as _) });
+    /// `IPPROTO_RSVP`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const RSVP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_RSVP as _) });
+    /// `IPPROTO_GRE`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const GRE: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_GRE as _) });
+    /// `IPPROTO_ESP`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const ESP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ESP as _) });
+    /// `IPPROTO_AH`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const AH: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_AH as _) });
+    /// `IPPROTO_MTP`
+    #[cfg(not(any(solarish, netbsdlike, windows, target_os = "haiku")))]
+    pub const MTP: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_MTP as _) });
+    /// `IPPROTO_BEETPH`
+    #[cfg(not(any(bsd, solarish, windows, target_os = "haiku")))]
+    pub const BEETPH: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_BEETPH as _) });
+    /// `IPPROTO_ENCAP`
+    #[cfg(not(any(solarish, windows, target_os = "haiku")))]
+    pub const ENCAP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ENCAP as _) });
+    /// `IPPROTO_PIM`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const PIM: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_PIM as _) });
+    /// `IPPROTO_COMP`
+    #[cfg(not(any(bsd, solarish, windows, target_os = "haiku")))]
+    pub const COMP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_COMP as _) });
+    /// `IPPROTO_SCTP`
+    #[cfg(not(any(
+        solarish,
+        target_os = "dragonfly",
+        target_os = "haiku",
+        target_os = "openbsd"
+    )))]
+    pub const SCTP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_SCTP as _) });
+    /// `IPPROTO_UDPLITE`
+    #[cfg(not(any(
+        apple,
+        netbsdlike,
+        solarish,
+        windows,
+        target_os = "dragonfly",
+        target_os = "haiku",
+    )))]
+    pub const UDPLITE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_UDPLITE as _) });
+    /// `IPPROTO_MPLS`
+    #[cfg(not(any(
+        apple,
+        solarish,
+        windows,
+        target_os = "dragonfly",
+        target_os = "haiku",
+        target_os = "netbsd",
+    )))]
+    pub const MPLS: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_MPLS as _) });
+    /// `IPPROTO_ETHERNET`
+    #[cfg(linux_kernel)]
+    pub const ETHERNET: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ETHERNET as _) });
+    /// `IPPROTO_RAW`
+    pub const RAW: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_RAW as _) });
+    /// `IPPROTO_MPTCP`
+    #[cfg(not(any(
+        bsd,
+        solarish,
+        windows,
+        target_os = "emscripten",
+        target_os = "fuchsia",
+        target_os = "haiku",
+    )))]
+    pub const MPTCP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_MPTCP as _) });
+    /// `IPPROTO_FRAGMENT`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const FRAGMENT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_FRAGMENT as _) });
+    /// `IPPROTO_ICMPV6`
+    pub const ICMPV6: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ICMPV6 as _) });
+    /// `IPPROTO_MH`
+    #[cfg(not(any(
+        apple,
+        netbsdlike,
+        solarish,
+        windows,
+        target_os = "dragonfly",
+        target_os = "haiku",
+    )))]
+    pub const MH: Protocol = Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_MH as _) });
+    /// `IPPROTO_ROUTING`
+    #[cfg(not(any(solarish, target_os = "haiku")))]
+    pub const ROUTING: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::IPPROTO_ROUTING as _) });
+}
+
+/// `SYSPROTO_*` constants.
+pub mod sysproto {
+    #[cfg(apple)]
+    use {
+        super::{Protocol, RawProtocol},
+        crate::backend::c,
+    };
+
+    /// `SYSPROTO_EVENT`
+    #[cfg(apple)]
+    pub const EVENT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::SYSPROTO_EVENT as _) });
+
+    /// `SYSPROTO_CONTROL`
+    #[cfg(apple)]
+    pub const CONTROL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::SYSPROTO_CONTROL as _) });
+}
+
+/// `NETLINK_*` constants.
+///
+/// For `NETLINK_ROUTE`, pass `None` as the `protocol` argument.
+pub mod netlink {
+    #[cfg(linux_kernel)]
+    use {
+        super::{Protocol, RawProtocol},
+        crate::backend::c,
+    };
+
+    /// `NETLINK_UNUSED`
+    #[cfg(linux_kernel)]
+    pub const UNUSED: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_UNUSED as _) });
+    /// `NETLINK_USERSOCK`
+    #[cfg(linux_kernel)]
+    pub const USERSOCK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_USERSOCK as _) });
+    /// `NETLINK_FIREWALL`
+    #[cfg(linux_kernel)]
+    pub const FIREWALL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_FIREWALL as _) });
+    /// `NETLINK_SOCK_DIAG`
+    #[cfg(linux_kernel)]
+    pub const SOCK_DIAG: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_SOCK_DIAG as _) });
+    /// `NETLINK_NFLOG`
+    #[cfg(linux_kernel)]
+    pub const NFLOG: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_NFLOG as _) });
+    /// `NETLINK_XFRM`
+    #[cfg(linux_kernel)]
+    pub const XFRM: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_XFRM as _) });
+    /// `NETLINK_SELINUX`
+    #[cfg(linux_kernel)]
+    pub const SELINUX: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_SELINUX as _) });
+    /// `NETLINK_ISCSI`
+    #[cfg(linux_kernel)]
+    pub const ISCSI: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_ISCSI as _) });
+    /// `NETLINK_AUDIT`
+    #[cfg(linux_kernel)]
+    pub const AUDIT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_AUDIT as _) });
+    /// `NETLINK_FIB_LOOKUP`
+    #[cfg(linux_kernel)]
+    pub const FIB_LOOKUP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_FIB_LOOKUP as _) });
+    /// `NETLINK_CONNECTOR`
+    #[cfg(linux_kernel)]
+    pub const CONNECTOR: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_CONNECTOR as _) });
+    /// `NETLINK_NETFILTER`
+    #[cfg(linux_kernel)]
+    pub const NETFILTER: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_NETFILTER as _) });
+    /// `NETLINK_IP6_FW`
+    #[cfg(linux_kernel)]
+    pub const IP6_FW: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_IP6_FW as _) });
+    /// `NETLINK_DNRTMSG`
+    #[cfg(linux_kernel)]
+    pub const DNRTMSG: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_DNRTMSG as _) });
+    /// `NETLINK_KOBJECT_UEVENT`
+    #[cfg(linux_kernel)]
+    pub const KOBJECT_UEVENT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_KOBJECT_UEVENT as _) });
+    /// `NETLINK_GENERIC`
+    // This is defined on FreeBSD too, but it has the value 0, so it doesn't
+    // fit in or `NonZeroU32`. It's unclear whether FreeBSD intends
+    // `NETLINK_GENERIC` to be the default when Linux has `NETLINK_ROUTE`
+    // as the default.
+    #[cfg(linux_kernel)]
+    pub const GENERIC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_GENERIC as _) });
+    /// `NETLINK_SCSITRANSPORT`
+    #[cfg(linux_kernel)]
+    pub const SCSITRANSPORT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_SCSITRANSPORT as _) });
+    /// `NETLINK_ECRYPTFS`
+    #[cfg(linux_kernel)]
+    pub const ECRYPTFS: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_ECRYPTFS as _) });
+    /// `NETLINK_RDMA`
+    #[cfg(linux_kernel)]
+    pub const RDMA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_RDMA as _) });
+    /// `NETLINK_CRYPTO`
+    #[cfg(linux_kernel)]
+    pub const CRYPTO: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_CRYPTO as _) });
+    /// `NETLINK_INET_DIAG`
+    #[cfg(linux_kernel)]
+    pub const INET_DIAG: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_INET_DIAG as _) });
+    /// `NETLINK_ADD_MEMBERSHIP`
+    #[cfg(linux_kernel)]
+    pub const ADD_MEMBERSHIP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_ADD_MEMBERSHIP as _) });
+    /// `NETLINK_DROP_MEMBERSHIP`
+    #[cfg(linux_kernel)]
+    pub const DROP_MEMBERSHIP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_DROP_MEMBERSHIP as _) });
+    /// `NETLINK_PKTINFO`
+    #[cfg(linux_kernel)]
+    pub const PKTINFO: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_PKTINFO as _) });
+    /// `NETLINK_BROADCAST_ERROR`
+    #[cfg(linux_kernel)]
+    pub const BROADCAST_ERROR: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_BROADCAST_ERROR as _) });
+    /// `NETLINK_NO_ENOBUFS`
+    #[cfg(linux_kernel)]
+    pub const NO_ENOBUFS: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_NO_ENOBUFS as _) });
+    /// `NETLINK_RX_RING`
+    #[cfg(linux_kernel)]
+    pub const RX_RING: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_RX_RING as _) });
+    /// `NETLINK_TX_RING`
+    #[cfg(linux_kernel)]
+    pub const TX_RING: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_TX_RING as _) });
+    /// `NETLINK_LISTEN_ALL_NSID`
+    #[cfg(linux_kernel)]
+    pub const LISTEN_ALL_NSID: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_LISTEN_ALL_NSID as _) });
+    /// `NETLINK_LIST_MEMBERSHIPS`
+    #[cfg(linux_kernel)]
+    pub const LIST_MEMBERSHIPS: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_LIST_MEMBERSHIPS as _) });
+    /// `NETLINK_CAP_ACK`
+    #[cfg(linux_kernel)]
+    pub const CAP_ACK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_CAP_ACK as _) });
+    /// `NETLINK_EXT_ACK`
+    #[cfg(linux_kernel)]
+    pub const EXT_ACK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_EXT_ACK as _) });
+    /// `NETLINK_GET_STRICT_CHK`
+    #[cfg(linux_kernel)]
+    pub const GET_STRICT_CHK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked(c::NETLINK_GET_STRICT_CHK as _) });
+}
+
+/// `ETH_P_*` constants.
+///
+// These are translated into 16-bit big-endian form because that's what the
+// `AddressFamily::PACKET` address family [expects].
+//
+// [expects]: https://man7.org/linux/man-pages/man7/packet.7.html
+pub mod eth {
+    #[cfg(linux_kernel)]
+    use {
+        super::{Protocol, RawProtocol},
+        crate::backend::c,
+    };
+
+    /// `ETH_P_LOOP`
+    #[cfg(linux_kernel)]
+    pub const LOOP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LOOP as u16).to_be() as u32) });
+    /// `ETH_P_PUP`
+    #[cfg(linux_kernel)]
+    pub const PUP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PUP as u16).to_be() as u32) });
+    /// `ETH_P_PUPAT`
+    #[cfg(linux_kernel)]
+    pub const PUPAT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PUPAT as u16).to_be() as u32) });
+    /// `ETH_P_TSN`
+    #[cfg(linux_kernel)]
+    pub const TSN: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TSN as u16).to_be() as u32) });
+    /// `ETH_P_ERSPAN2`
+    #[cfg(linux_kernel)]
+    pub const ERSPAN2: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ERSPAN2 as u16).to_be() as u32) });
+    /// `ETH_P_IP`
+    #[cfg(linux_kernel)]
+    pub const IP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IP as u16).to_be() as u32) });
+    /// `ETH_P_X25`
+    #[cfg(linux_kernel)]
+    pub const X25: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_X25 as u16).to_be() as u32) });
+    /// `ETH_P_ARP`
+    #[cfg(linux_kernel)]
+    pub const ARP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ARP as u16).to_be() as u32) });
+    /// `ETH_P_BPQ`
+    #[cfg(linux_kernel)]
+    pub const BPQ: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_BPQ as u16).to_be() as u32) });
+    /// `ETH_P_IEEEPUP`
+    #[cfg(linux_kernel)]
+    pub const IEEEPUP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IEEEPUP as u16).to_be() as u32) });
+    /// `ETH_P_IEEEPUPAT`
+    #[cfg(linux_kernel)]
+    pub const IEEEPUPAT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IEEEPUPAT as u16).to_be() as u32) });
+    /// `ETH_P_BATMAN`
+    #[cfg(linux_kernel)]
+    pub const BATMAN: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_BATMAN as u16).to_be() as u32) });
+    /// `ETH_P_DEC`
+    #[cfg(linux_kernel)]
+    pub const DEC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DEC as u16).to_be() as u32) });
+    /// `ETH_P_DNA_DL`
+    #[cfg(linux_kernel)]
+    pub const DNA_DL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DNA_DL as u16).to_be() as u32) });
+    /// `ETH_P_DNA_RC`
+    #[cfg(linux_kernel)]
+    pub const DNA_RC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DNA_RC as u16).to_be() as u32) });
+    /// `ETH_P_DNA_RT`
+    #[cfg(linux_kernel)]
+    pub const DNA_RT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DNA_RT as u16).to_be() as u32) });
+    /// `ETH_P_LAT`
+    #[cfg(linux_kernel)]
+    pub const LAT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LAT as u16).to_be() as u32) });
+    /// `ETH_P_DIAG`
+    #[cfg(linux_kernel)]
+    pub const DIAG: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DIAG as u16).to_be() as u32) });
+    /// `ETH_P_CUST`
+    #[cfg(linux_kernel)]
+    pub const CUST: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CUST as u16).to_be() as u32) });
+    /// `ETH_P_SCA`
+    #[cfg(linux_kernel)]
+    pub const SCA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_SCA as u16).to_be() as u32) });
+    /// `ETH_P_TEB`
+    #[cfg(linux_kernel)]
+    pub const TEB: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TEB as u16).to_be() as u32) });
+    /// `ETH_P_RARP`
+    #[cfg(linux_kernel)]
+    pub const RARP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_RARP as u16).to_be() as u32) });
+    /// `ETH_P_ATALK`
+    #[cfg(linux_kernel)]
+    pub const ATALK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ATALK as u16).to_be() as u32) });
+    /// `ETH_P_AARP`
+    #[cfg(linux_kernel)]
+    pub const AARP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_AARP as u16).to_be() as u32) });
+    /// `ETH_P_8021Q`
+    #[cfg(linux_kernel)]
+    pub const P_8021Q: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_8021Q as u16).to_be() as u32) });
+    /// `ETH_P_ERSPAN`
+    #[cfg(linux_kernel)]
+    pub const ERSPAN: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ERSPAN as u16).to_be() as u32) });
+    /// `ETH_P_IPX`
+    #[cfg(linux_kernel)]
+    pub const IPX: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IPX as u16).to_be() as u32) });
+    /// `ETH_P_IPV6`
+    #[cfg(linux_kernel)]
+    pub const IPV6: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IPV6 as u16).to_be() as u32) });
+    /// `ETH_P_PAUSE`
+    #[cfg(linux_kernel)]
+    pub const PAUSE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PAUSE as u16).to_be() as u32) });
+    /// `ETH_P_SLOW`
+    #[cfg(linux_kernel)]
+    pub const SLOW: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_SLOW as u16).to_be() as u32) });
+    /// `ETH_P_WCCP`
+    #[cfg(linux_kernel)]
+    pub const WCCP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_WCCP as u16).to_be() as u32) });
+    /// `ETH_P_MPLS_UC`
+    #[cfg(linux_kernel)]
+    pub const MPLS_UC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MPLS_UC as u16).to_be() as u32) });
+    /// `ETH_P_MPLS_MC`
+    #[cfg(linux_kernel)]
+    pub const MPLS_MC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MPLS_MC as u16).to_be() as u32) });
+    /// `ETH_P_ATMMPOA`
+    #[cfg(linux_kernel)]
+    pub const ATMMPOA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ATMMPOA as u16).to_be() as u32) });
+    /// `ETH_P_PPP_DISC`
+    #[cfg(linux_kernel)]
+    pub const PPP_DISC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PPP_DISC as u16).to_be() as u32) });
+    /// `ETH_P_PPP_SES`
+    #[cfg(linux_kernel)]
+    pub const PPP_SES: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PPP_SES as u16).to_be() as u32) });
+    /// `ETH_P_LINK_CTL`
+    #[cfg(linux_kernel)]
+    pub const LINK_CTL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LINK_CTL as u16).to_be() as u32) });
+    /// `ETH_P_ATMFATE`
+    #[cfg(linux_kernel)]
+    pub const ATMFATE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ATMFATE as u16).to_be() as u32) });
+    /// `ETH_P_PAE`
+    #[cfg(linux_kernel)]
+    pub const PAE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PAE as u16).to_be() as u32) });
+    /// `ETH_P_PROFINET`
+    #[cfg(linux_kernel)]
+    pub const PROFINET: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PROFINET as u16).to_be() as u32) });
+    /// `ETH_P_REALTEK`
+    #[cfg(linux_kernel)]
+    pub const REALTEK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_REALTEK as u16).to_be() as u32) });
+    /// `ETH_P_AOE`
+    #[cfg(linux_kernel)]
+    pub const AOE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_AOE as u16).to_be() as u32) });
+    /// `ETH_P_ETHERCAT`
+    #[cfg(linux_kernel)]
+    pub const ETHERCAT: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ETHERCAT as u16).to_be() as u32) });
+    /// `ETH_P_8021AD`
+    #[cfg(linux_kernel)]
+    pub const P_8021AD: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_8021AD as u16).to_be() as u32) });
+    /// `ETH_P_802_EX1`
+    #[cfg(linux_kernel)]
+    pub const P_802_EX1: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_802_EX1 as u16).to_be() as u32) });
+    /// `ETH_P_PREAUTH`
+    #[cfg(linux_kernel)]
+    pub const PREAUTH: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PREAUTH as u16).to_be() as u32) });
+    /// `ETH_P_TIPC`
+    #[cfg(linux_kernel)]
+    pub const TIPC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TIPC as u16).to_be() as u32) });
+    /// `ETH_P_LLDP`
+    #[cfg(linux_kernel)]
+    pub const LLDP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LLDP as u16).to_be() as u32) });
+    /// `ETH_P_MRP`
+    #[cfg(linux_kernel)]
+    pub const MRP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MRP as u16).to_be() as u32) });
+    /// `ETH_P_MACSEC`
+    #[cfg(linux_kernel)]
+    pub const MACSEC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MACSEC as u16).to_be() as u32) });
+    /// `ETH_P_8021AH`
+    #[cfg(linux_kernel)]
+    pub const P_8021AH: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_8021AH as u16).to_be() as u32) });
+    /// `ETH_P_MVRP`
+    #[cfg(linux_kernel)]
+    pub const MVRP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MVRP as u16).to_be() as u32) });
+    /// `ETH_P_1588`
+    #[cfg(linux_kernel)]
+    pub const P_1588: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_1588 as u16).to_be() as u32) });
+    /// `ETH_P_NCSI`
+    #[cfg(linux_kernel)]
+    pub const NCSI: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_NCSI as u16).to_be() as u32) });
+    /// `ETH_P_PRP`
+    #[cfg(linux_kernel)]
+    pub const PRP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PRP as u16).to_be() as u32) });
+    /// `ETH_P_CFM`
+    #[cfg(linux_kernel)]
+    pub const CFM: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CFM as u16).to_be() as u32) });
+    /// `ETH_P_FCOE`
+    #[cfg(linux_kernel)]
+    pub const FCOE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_FCOE as u16).to_be() as u32) });
+    /// `ETH_P_IBOE`
+    #[cfg(linux_kernel)]
+    pub const IBOE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IBOE as u16).to_be() as u32) });
+    /// `ETH_P_TDLS`
+    #[cfg(linux_kernel)]
+    pub const TDLS: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TDLS as u16).to_be() as u32) });
+    /// `ETH_P_FIP`
+    #[cfg(linux_kernel)]
+    pub const FIP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_FIP as u16).to_be() as u32) });
+    /// `ETH_P_80221`
+    #[cfg(linux_kernel)]
+    pub const P_80221: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_80221 as u16).to_be() as u32) });
+    /// `ETH_P_HSR`
+    #[cfg(linux_kernel)]
+    pub const HSR: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_HSR as u16).to_be() as u32) });
+    /// `ETH_P_NSH`
+    #[cfg(linux_kernel)]
+    pub const NSH: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_NSH as u16).to_be() as u32) });
+    /// `ETH_P_LOOPBACK`
+    #[cfg(linux_kernel)]
+    pub const LOOPBACK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LOOPBACK as u16).to_be() as u32) });
+    /// `ETH_P_QINQ1`
+    #[cfg(linux_kernel)]
+    pub const QINQ1: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_QINQ1 as u16).to_be() as u32) });
+    /// `ETH_P_QINQ2`
+    #[cfg(linux_kernel)]
+    pub const QINQ2: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_QINQ2 as u16).to_be() as u32) });
+    /// `ETH_P_QINQ3`
+    #[cfg(linux_kernel)]
+    pub const QINQ3: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_QINQ3 as u16).to_be() as u32) });
+    /// `ETH_P_EDSA`
+    #[cfg(linux_kernel)]
+    pub const EDSA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_EDSA as u16).to_be() as u32) });
+    /// `ETH_P_DSA_8021Q`
+    #[cfg(linux_kernel)]
+    pub const DSA_8021Q: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DSA_8021Q as u16).to_be() as u32) });
+    /// `ETH_P_DSA_A5PSW`
+    #[cfg(linux_kernel)]
+    pub const DSA_A5PSW: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DSA_A5PSW as u16).to_be() as u32) });
+    /// `ETH_P_IFE`
+    #[cfg(linux_kernel)]
+    pub const IFE: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IFE as u16).to_be() as u32) });
+    /// `ETH_P_AF_IUCV`
+    #[cfg(linux_kernel)]
+    pub const AF_IUCV: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_AF_IUCV as u16).to_be() as u32) });
+    /// `ETH_P_802_3_MIN`
+    #[cfg(linux_kernel)]
+    pub const P_802_3_MIN: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_802_3_MIN as u16).to_be() as u32) });
+    /// `ETH_P_802_3`
+    #[cfg(linux_kernel)]
+    pub const P_802_3: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_802_3 as u16).to_be() as u32) });
+    /// `ETH_P_AX25`
+    #[cfg(linux_kernel)]
+    pub const AX25: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_AX25 as u16).to_be() as u32) });
+    /// `ETH_P_ALL`
+    #[cfg(linux_kernel)]
+    pub const ALL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ALL as u16).to_be() as u32) });
+    /// `ETH_P_802_2`
+    #[cfg(linux_kernel)]
+    pub const P_802_2: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_802_2 as u16).to_be() as u32) });
+    /// `ETH_P_SNAP`
+    #[cfg(linux_kernel)]
+    pub const SNAP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_SNAP as u16).to_be() as u32) });
+    /// `ETH_P_DDCMP`
+    #[cfg(linux_kernel)]
+    pub const DDCMP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DDCMP as u16).to_be() as u32) });
+    /// `ETH_P_WAN_PPP`
+    #[cfg(linux_kernel)]
+    pub const WAN_PPP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_WAN_PPP as u16).to_be() as u32) });
+    /// `ETH_P_PPP_MP`
+    #[cfg(linux_kernel)]
+    pub const PPP_MP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PPP_MP as u16).to_be() as u32) });
+    /// `ETH_P_LOCALTALK`
+    #[cfg(linux_kernel)]
+    pub const LOCALTALK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_LOCALTALK as u16).to_be() as u32) });
+    /// `ETH_P_CAN`
+    #[cfg(linux_kernel)]
+    pub const CAN: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CAN as u16).to_be() as u32) });
+    /// `ETH_P_CANFD`
+    #[cfg(linux_kernel)]
+    pub const CANFD: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CANFD as u16).to_be() as u32) });
+    /// `ETH_P_CANXL`
+    #[cfg(linux_kernel)]
+    pub const CANXL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CANXL as u16).to_be() as u32) });
+    /// `ETH_P_PPPTALK`
+    #[cfg(linux_kernel)]
+    pub const PPPTALK: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PPPTALK as u16).to_be() as u32) });
+    /// `ETH_P_TR_802_2`
+    #[cfg(linux_kernel)]
+    pub const TR_802_2: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TR_802_2 as u16).to_be() as u32) });
+    /// `ETH_P_MOBITEX`
+    #[cfg(linux_kernel)]
+    pub const MOBITEX: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MOBITEX as u16).to_be() as u32) });
+    /// `ETH_P_CONTROL`
+    #[cfg(linux_kernel)]
+    pub const CONTROL: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CONTROL as u16).to_be() as u32) });
+    /// `ETH_P_IRDA`
+    #[cfg(linux_kernel)]
+    pub const IRDA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_IRDA as u16).to_be() as u32) });
+    /// `ETH_P_ECONET`
+    #[cfg(linux_kernel)]
+    pub const ECONET: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ECONET as u16).to_be() as u32) });
+    /// `ETH_P_HDLC`
+    #[cfg(linux_kernel)]
+    pub const HDLC: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_HDLC as u16).to_be() as u32) });
+    /// `ETH_P_ARCNET`
+    #[cfg(linux_kernel)]
+    pub const ARCNET: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_ARCNET as u16).to_be() as u32) });
+    /// `ETH_P_DSA`
+    #[cfg(linux_kernel)]
+    pub const DSA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_DSA as u16).to_be() as u32) });
+    /// `ETH_P_TRAILER`
+    #[cfg(linux_kernel)]
+    pub const TRAILER: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_TRAILER as u16).to_be() as u32) });
+    /// `ETH_P_PHONET`
+    #[cfg(linux_kernel)]
+    pub const PHONET: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_PHONET as u16).to_be() as u32) });
+    /// `ETH_P_IEEE802154`
+    #[cfg(linux_kernel)]
+    pub const IEEE802154: Protocol = Protocol(unsafe {
+        RawProtocol::new_unchecked((c::ETH_P_IEEE802154 as u16).to_be() as u32)
+    });
+    /// `ETH_P_CAIF`
+    #[cfg(linux_kernel)]
+    pub const CAIF: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_CAIF as u16).to_be() as u32) });
+    /// `ETH_P_XDSA`
+    #[cfg(linux_kernel)]
+    pub const XDSA: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_XDSA as u16).to_be() as u32) });
+    /// `ETH_P_MAP`
+    #[cfg(linux_kernel)]
+    pub const MAP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MAP as u16).to_be() as u32) });
+    /// `ETH_P_MCTP`
+    #[cfg(linux_kernel)]
+    pub const MCTP: Protocol =
+        Protocol(unsafe { RawProtocol::new_unchecked((c::ETH_P_MCTP as u16).to_be() as u32) });
+}
+
+#[rustfmt::skip]
+impl Protocol {
+    /// Constructs a `Protocol` from a raw integer.
+    #[inline]
+    pub const fn from_raw(raw: RawProtocol) -> Self {
+        Self(raw)
+    }
+
+    /// Returns the raw integer for this `Protocol`.
+    #[inline]
+    pub const fn as_raw(self) -> RawProtocol {
+        self.0
+    }
+}
+
+/// `SHUT_*` constants for use with [`shutdown`].
+///
+/// [`shutdown`]: crate::net::shutdown
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[repr(u32)]
+pub enum Shutdown {
+    /// `SHUT_RD`—Disable further read operations.
+    Read = c::SHUT_RD as _,
+    /// `SHUT_WR`—Disable further write operations.
+    Write = c::SHUT_WR as _,
+    /// `SHUT_RDWR`—Disable further read and write operations.
+    ReadWrite = c::SHUT_RDWR as _,
+}
+
+bitflags! {
+    /// `SOCK_*` constants for use with [`socket_with`], [`accept_with`] and
+    /// [`acceptfrom_with`].
+    ///
+    /// [`socket_with`]: crate::net::socket_with
+    /// [`accept_with`]: crate::net::accept_with
+    /// [`acceptfrom_with`]: crate::net::acceptfrom_with
+    #[repr(transparent)]
+    #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
+    pub struct SocketFlags: c::c_uint {
+        /// `SOCK_NONBLOCK`
+        #[cfg(not(any(apple, windows, target_os = "haiku")))]
+        const NONBLOCK = bitcast!(c::SOCK_NONBLOCK);
+
+        /// `SOCK_CLOEXEC`
+        #[cfg(not(any(apple, windows, target_os = "haiku")))]
+        const CLOEXEC = bitcast!(c::SOCK_CLOEXEC);
+    }
+}
+
+#[test]
+fn test_sizes() {
+    use c::c_int;
+    use core::mem::size_of;
+
+    // Backend code needs to cast these to `c_int` so make sure that cast
+    // isn't lossy.
+    assert_eq!(size_of::<RawProtocol>(), size_of::<c_int>());
+    assert_eq!(size_of::<Protocol>(), size_of::<c_int>());
+    assert_eq!(size_of::<Option<Protocol>>(), size_of::<c_int>());
+    assert_eq!(size_of::<RawSocketType>(), size_of::<c_int>());
+    assert_eq!(size_of::<SocketType>(), size_of::<c_int>());
+    assert_eq!(size_of::<SocketFlags>(), size_of::<c_int>());
+}