diff options
Diffstat (limited to 'src/net/netip/netip.go')
| -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 a44b094..9e4d41f 100644 --- a/src/net/netip/netip.go +++ b/src/net/netip/netip.go @@ -507,6 +507,10 @@ 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() { @@ -522,6 +526,10 @@ 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() { @@ -537,6 +545,10 @@ 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() { @@ -555,7 +567,7 @@ 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 @@ -563,6 +575,10 @@ 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() { @@ -591,6 +607,10 @@ 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})) { @@ -608,6 +628,10 @@ 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 |