diff options
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/tcpip/network/ipv6/icmp.go | 18 | ||||
| -rw-r--r-- | pkg/tcpip/stack/neighbor_entry.go | 6 |
2 files changed, 12 insertions, 12 deletions
diff --git a/pkg/tcpip/network/ipv6/icmp.go b/pkg/tcpip/network/ipv6/icmp.go index 913b2140c..ead6bedcb 100644 --- a/pkg/tcpip/network/ipv6/icmp.go +++ b/pkg/tcpip/network/ipv6/icmp.go @@ -439,19 +439,19 @@ func (e *endpoint) handleICMP(r *stack.Route, pkt *stack.PacketBuffer, hasFragme // If the NA message has the target link layer option, update the link // address cache with the link address for the target of the message. - if len(targetLinkAddr) != 0 { - if e.nud == nil { + if e.nud == nil { + if len(targetLinkAddr) != 0 { e.linkAddrCache.AddLinkAddress(e.nic.ID(), targetAddr, targetLinkAddr) - return } - - e.nud.HandleConfirmation(targetAddr, targetLinkAddr, stack.ReachabilityConfirmationFlags{ - Solicited: na.SolicitedFlag(), - Override: na.OverrideFlag(), - IsRouter: na.RouterFlag(), - }) + return } + e.nud.HandleConfirmation(targetAddr, targetLinkAddr, stack.ReachabilityConfirmationFlags{ + Solicited: na.SolicitedFlag(), + Override: na.OverrideFlag(), + IsRouter: na.RouterFlag(), + }) + case header.ICMPv6EchoRequest: received.EchoRequest.Increment() icmpHdr, ok := pkt.TransportHeader().Consume(header.ICMPv6EchoMinimumSize) diff --git a/pkg/tcpip/stack/neighbor_entry.go b/pkg/tcpip/stack/neighbor_entry.go index 4d69a4de1..be61a21af 100644 --- a/pkg/tcpip/stack/neighbor_entry.go +++ b/pkg/tcpip/stack/neighbor_entry.go @@ -406,9 +406,9 @@ func (e *neighborEntry) handleConfirmationLocked(linkAddr tcpip.LinkAddress, fla // INCOMPLETE state." - RFC 4861 section 7.2.5 case Reachable, Stale, Delay, Probe: - sameLinkAddr := e.neigh.LinkAddr == linkAddr + isLinkAddrDifferent := len(linkAddr) != 0 && e.neigh.LinkAddr != linkAddr - if !sameLinkAddr { + if isLinkAddrDifferent { if !flags.Override { if e.neigh.State == Reachable { e.dispatchChangeEventLocked(Stale) @@ -431,7 +431,7 @@ func (e *neighborEntry) handleConfirmationLocked(linkAddr tcpip.LinkAddress, fla } } - if flags.Solicited && (flags.Override || sameLinkAddr) { + if flags.Solicited && (flags.Override || !isLinkAddrDifferent) { if e.neigh.State != Reachable { e.dispatchChangeEventLocked(Reachable) } |