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Date:      Mon, 22 Dec 2008 03:15:23 +0000 (UTC)
From:      naddy@mips.inka.de (Christian Weisgerber)
To:        freebsd-net@freebsd.org
Subject:   NDP breakage in -CURRENT
Message-ID:  <gin0ob$1qh$1@lorvorc.mips.inka.de>

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Something seems to be wrong with IPv6 neighbor discovery.

FreeBSD lorvorc.mips.inka.de 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Sat Dec 20 17:46:35 CET 2008 naddy@lorvorc.mips.inka.de:/usr/obj/usr/src/sys/GENERIC  amd64

This box is on a network that has IPv6.  No exciting configuration,
just ipv6_enable=YES and ipv6_defaultrouter and ipv6_ifconfig_nfe0
for a manually configured address.  IPv6 with other hosts on the
network and beyond works.

However, clearing the NDP cache (ndp -c) kills IPv6 connectivity.
The cache remains empty.  tcpdump shows that neighbor solicitations
are sent and advertisement received, but these replies seem to be
ignored.  ndp -a shows that no entries are added to the cache.

This is a new problem.  Fallout from arp-v2?

-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de




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