diff options
Diffstat (limited to 'pkg/tcpip/stack')
| -rw-r--r-- | pkg/tcpip/stack/stack.go | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go index 25ea6b459..ba0e1a7ec 100644 --- a/pkg/tcpip/stack/stack.go +++ b/pkg/tcpip/stack/stack.go @@ -1210,7 +1210,9 @@ func (s *Stack) FindRoute(id tcpip.NICID, localAddr, remoteAddr tcpip.Address, n isLocalBroadcast := remoteAddr == header.IPv4Broadcast isMulticast := header.IsV4MulticastAddress(remoteAddr) || header.IsV6MulticastAddress(remoteAddr) - needRoute := !(isLocalBroadcast || isMulticast || header.IsV6LinkLocalAddress(remoteAddr)) + isLinkLocal := header.IsV6LinkLocalAddress(remoteAddr) || header.IsV6LinkLocalMulticastAddress(remoteAddr) + IsLoopback := header.IsV4LoopbackAddress(remoteAddr) || header.IsV6LoopbackAddress(remoteAddr) + needRoute := !(isLocalBroadcast || isMulticast || isLinkLocal || IsLoopback) if id != 0 && !needRoute { if nic, ok := s.nics[id]; ok && nic.Enabled() { if addressEndpoint := s.getAddressEP(nic, localAddr, remoteAddr, netProto); addressEndpoint != nil { @@ -1246,6 +1248,9 @@ func (s *Stack) FindRoute(id tcpip.NICID, localAddr, remoteAddr tcpip.Address, n } if !needRoute { + if IsLoopback { + return Route{}, tcpip.ErrBadLocalAddress + } return Route{}, tcpip.ErrNetworkUnreachable } |