[Bug 197286] Panic in IPv6 stack - 0xc0d0b1fc is in ip6_input (/usr/src/sys/netinet6/ip6_input.c:702)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197286

--- Comment #3 from Tim Bishop <tdb at FreeBSD.org> ---
(In reply to Andrey V. Elsukov from comment #2)
> Can you show ifconfig output of your configuration?

I've got the machine running HEAD (still no problems since my comment #0), but
from console logs I can see the following (IPs anonymised):

vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=8284b<RXCSUM,TXCSUM,VLAN_MTU,POLLING,WOL_UCAST,WOL_MAGIC,LINKSTATE>
        ether 00:00:24:cb:15:b8
        inet6 fe80::200:24ff:fecb:15b8%vr0 prefixlen 64 scopeid 0x1
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
vr1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=8284b<RXCSUM,TXCSUM,VLAN_MTU,POLLING,WOL_UCAST,WOL_MAGIC,LINKSTATE>
        ether 00:00:24:cb:15:b9
        inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
        inet6 fe80::200:24ff:fecb:15b9%vr1 prefixlen 64 scopeid 0x2
        inet6 1:1::1 prefixlen 64
        inet 1.1.1.198 netmask 0xfffffff8 broadcast 1.1.1.199
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
vr2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=8284b<RXCSUM,TXCSUM,VLAN_MTU,POLLING,WOL_UCAST,WOL_MAGIC,LINKSTATE>
        ether 00:00:24:cb:15:ba
        inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
        inet6 fe80::200:24ff:fecb:15ba%vr2 prefixlen 64 scopeid 0x3
        inet6 1:2::1 prefixlen 64
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (none)
        status: no carrier
vr3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=8280b<RXCSUM,TXCSUM,VLAN_MTU,WOL_UCAST,WOL_MAGIC,LINKSTATE>
        ether 00:00:24:cb:15:bb
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect
pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33200
        nd6 options=9<PERFORMNUD,IFDISABLED>
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x8
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1280
        tunnel inet 1.1.1.198 --> 1.1.1.126
        inet6 fe80::200:24ff:fecb:15b8%gif0 prefixlen 64 scopeid 0x9
        inet6 1:73::2 --> 1:73::1 prefixlen 128
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        options=1<ACCEPT_REV_ETHIP_VER>
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1492
        options=80000<LINKSTATE>
        inet 1.1.1.198 --> 1.1.1.27 netmask 0xffffffff
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        Opened by PID 838

tun0 is a ppp managed link using PPPoE over vr0. gif0 is an IPv6 tunnel which
goes out over the tun0 connection. vr1 and vr2 are internal networking.

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