diff options
Diffstat (limited to 'pkg/tcpip/header')
| -rw-r--r-- | pkg/tcpip/header/ipv4.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/tcpip/header/ipv4.go b/pkg/tcpip/header/ipv4.go index dcc549c7b..7baaf0d17 100644 --- a/pkg/tcpip/header/ipv4.go +++ b/pkg/tcpip/header/ipv4.go @@ -208,6 +208,15 @@ var IPv4EmptySubnet = func() tcpip.Subnet { return subnet }() +// IPv4LoopbackSubnet is the loopback subnet for IPv4. +var IPv4LoopbackSubnet = func() tcpip.Subnet { + subnet, err := tcpip.NewSubnet(tcpip.Address("\x7f\x00\x00\x00"), tcpip.AddressMask("\xff\x00\x00\x00")) + if err != nil { + panic(err) + } + return subnet +}() + // IPVersion returns the version of IP used in the given packet. It returns -1 // if the packet is not large enough to contain the version field. func IPVersion(b []byte) int { |