diff options
| author | Ghanan Gowripalan <ghanan@google.com> | 2020-01-31 13:24:48 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-01-31 13:25:48 -0800 |
| commit | 528dd1ec72fee1dd63c734fe92d1b972b5735b8f (patch) | |
| tree | 157798c5fdae1e73cb5ec4e32e692161666a5cfa /pkg/tcpip/network/ipv6 | |
| parent | bc3a24d62788bd6b881afeda230f1a5550a5709a (diff) | |
Extract multicast IP to Ethernet address mapping
Test: header.TestEthernetAddressFromMulticastIPAddress
PiperOrigin-RevId: 292604649
Diffstat (limited to 'pkg/tcpip/network/ipv6')
| -rw-r--r-- | pkg/tcpip/network/ipv6/icmp.go | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/pkg/tcpip/network/ipv6/icmp.go b/pkg/tcpip/network/ipv6/icmp.go index dc20c0fd7..7491cfc41 100644 --- a/pkg/tcpip/network/ipv6/icmp.go +++ b/pkg/tcpip/network/ipv6/icmp.go @@ -441,23 +441,7 @@ func (*protocol) LinkAddressRequest(addr, localAddr tcpip.Address, linkEP stack. // ResolveStaticAddress implements stack.LinkAddressResolver. func (*protocol) ResolveStaticAddress(addr tcpip.Address) (tcpip.LinkAddress, bool) { if header.IsV6MulticastAddress(addr) { - // RFC 2464 Transmission of IPv6 Packets over Ethernet Networks - // - // 7. Address Mapping -- Multicast - // - // An IPv6 packet with a multicast destination address DST, - // consisting of the sixteen octets DST[1] through DST[16], is - // transmitted to the Ethernet multicast address whose first - // two octets are the value 3333 hexadecimal and whose last - // four octets are the last four octets of DST. - return tcpip.LinkAddress([]byte{ - 0x33, - 0x33, - addr[header.IPv6AddressSize-4], - addr[header.IPv6AddressSize-3], - addr[header.IPv6AddressSize-2], - addr[header.IPv6AddressSize-1], - }), true + return header.EthernetAddressFromMulticastIPv6Address(addr), true } - return "", false + return tcpip.LinkAddress([]byte(nil)), false } |