diff options
Diffstat (limited to '')
| -rw-r--r-- | src/net/netip/netip.go | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/net/netip/netip.go b/src/net/netip/netip.go index 7a189e8..92cb57e 100644 --- a/src/net/netip/netip.go +++ b/src/net/netip/netip.go @@ -508,6 +508,10 @@ func (ip Addr) hasZone() bool { // IsLinkLocalUnicast reports whether ip is a link-local unicast address. func (ip Addr) IsLinkLocalUnicast() bool { + if ip.Is4In6() { + ip = ip.Unmap() + } + // Dynamic Configuration of IPv4 Link-Local Addresses // https://datatracker.ietf.org/doc/html/rfc3927#section-2.1 if ip.Is4() { @@ -523,6 +527,10 @@ func (ip Addr) IsLinkLocalUnicast() bool { // IsLoopback reports whether ip is a loopback address. func (ip Addr) IsLoopback() bool { + if ip.Is4In6() { + ip = ip.Unmap() + } + // Requirements for Internet Hosts -- Communication Layers (3.2.1.3 Addressing) // https://datatracker.ietf.org/doc/html/rfc1122#section-3.2.1.3 if ip.Is4() { @@ -538,6 +546,10 @@ func (ip Addr) IsLoopback() bool { // IsMulticast reports whether ip is a multicast address. func (ip Addr) IsMulticast() bool { + if ip.Is4In6() { + ip = ip.Unmap() + } + // Host Extensions for IP Multicasting (4. HOST GROUP ADDRESSES) // https://datatracker.ietf.org/doc/html/rfc1112#section-4 if ip.Is4() { @@ -556,7 +568,7 @@ func (ip Addr) IsMulticast() bool { func (ip Addr) IsInterfaceLocalMulticast() bool { // IPv6 Addressing Architecture (2.7.1. Pre-Defined Multicast Addresses) // https://datatracker.ietf.org/doc/html/rfc4291#section-2.7.1 - if ip.Is6() { + if ip.Is6() && !ip.Is4In6() { return ip.v6u16(0)&0xff0f == 0xff01 } return false // zero value @@ -564,6 +576,10 @@ func (ip Addr) IsInterfaceLocalMulticast() bool { // IsLinkLocalMulticast reports whether ip is a link-local multicast address. func (ip Addr) IsLinkLocalMulticast() bool { + if ip.Is4In6() { + ip = ip.Unmap() + } + // IPv4 Multicast Guidelines (4. Local Network Control Block (224.0.0/24)) // https://datatracker.ietf.org/doc/html/rfc5771#section-4 if ip.Is4() { @@ -592,6 +608,10 @@ func (ip Addr) IsGlobalUnicast() bool { return false } + if ip.Is4In6() { + ip = ip.Unmap() + } + // Match package net's IsGlobalUnicast logic. Notably private IPv4 addresses // and ULA IPv6 addresses are still considered "global unicast". if ip.Is4() && (ip == IPv4Unspecified() || ip == AddrFrom4([4]byte{255, 255, 255, 255})) { @@ -609,6 +629,10 @@ func (ip Addr) IsGlobalUnicast() bool { // ip is in 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, or fc00::/7. This is the // same as [net.IP.IsPrivate]. func (ip Addr) IsPrivate() bool { + if ip.Is4In6() { + ip = ip.Unmap() + } + // Match the stdlib's IsPrivate logic. if ip.Is4() { // RFC 1918 allocates 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 as |