Date: Sat, 2 Jan 2021 21:57:27 +0700 From: Victor Sudakov <vas@sibptus.ru> To: freebsd-net@freebsd.org Cc: freebsd-questions@freebsd.org Subject: FreeBSD does not reply to IPv6 Neighbor Solicitations Message-ID: <20210102145727.GA62235@admin.sibptus.ru>
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Dear Colleagues,
Why could it be that a FreeBSD 12.2 host does not reply to ICMPv6
Neighbor Solicitations from the router?
Interface configuration on host:
$ ifconfig re1
re1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
ether c4:12:f5:33:c9:7c
inet 192.168.170.5/24 broadcast 192.168.170.255
inet6 fe80::c612:f5ff:fe33:c97c%re1/64 scopeid 0x2
inet6 2001:470:ecba:3::5/64
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
$
Interface configuration on router:
[admin@MikroTik] > /ipv6 address print where interface=bridge
Flags: X - disabled, I - invalid, D - dynamic, G - global, L - link-local
# ADDRESS FROM-POOL INTERFACE
0 DL fe80::4a8f:5aff:feab:b0c1/64 bridge
1 G 2001:470:ecba:3::1/64 bridge
[admin@MikroTik] >
Packet dump: http://admin.sibptus.ru/~vas/nd1.pcapng
where I ping a host in the IPv6 Internet from 2001:470:ecba:3::5, the
router wants to learn the L2 address for 2001:470:ecba:3::5 to reply
to, and receives no answer.
Where could be the problem?
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
2:5005/49@fidonet http://vas.tomsk.ru/
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