[Bug 228394] ndp -s proxy is out of order

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228394

            Bug ID: 228394
           Summary: ndp -s proxy is out of order
           Product: Base System
           Version: 11.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: bugs.freebsd.org at mx.zzux.com

Example:

ifconfig ext1
ext1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=6c07ba<TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 52:54:00:16:bc:83
        hwaddr 52:54:00:16:bc:83
        inet6 fe80::5054:ff:fe16:bc83%ext1 prefixlen 64 scopeid 0x2
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet 10Gbase-T <full-duplex>
        status: active

ndp -an
Neighbor                             Linklayer Address  Netif Expire    S Flags
fe80::5054:ff:fe16:bc83%ext1         52:54:00:16:bc:83   ext1 permanent R

ndp -s fe80::1111%ext1 52:54:00:16:bc:83 proxy

ndp -an
Neighbor                             Linklayer Address  Netif Expire    S Flags
fe80::1111%ext1                      52:54:00:16:bc:83   ext1 permanent R p
fe80::5054:ff:fe16:bc83%ext1         52:54:00:16:bc:83   ext1 permanent R

tcpdump -nnn -i ext1 ip6
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ext1, link-type EN10MB (Ethernet), capture size 262144 bytes
12:26:14.785750 IP6 fe80::5054:ff:fe8c:d393 > ff02::1:ff00:1111: ICMP6,
neighbor solicitation, who has fe80::1111, length 32
12:26:15.845482 IP6 fe80::5054:ff:fe8c:d393 > ff02::1:ff00:1111: ICMP6,
neighbor solicitation, who has fe80::1111, length 32
12:26:16.903501 IP6 fe80::5054:ff:fe8c:d393 > ff02::1:ff00:1111: ICMP6,
neighbor solicitation, who has fe80::1111, length 32
12:26:17.963626 IP6 fe80::5054:ff:fe8c:d393 > ff02::1:ff00:1111: ICMP6,
neighbor solicitation, who has fe80::1111, length 32


Host does not answer with neighbor advertisement message.

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