RE: NDP breakage in -CURRENT

From: Li, Qing <qing.li_at_bluecoat.com>
Date: Sun, 21 Dec 2008 21:49:19 -0800
Yes, probably a bug introduced by arp-v2, I will investigate and
get back to you.

-- Qing


-----Original Message-----
From: owner-freebsd-net_at_freebsd.org on behalf of Christian Weisgerber
Sent: Sun 12/21/2008 7:15 PM
To: freebsd-net_at_freebsd.org
Subject: NDP breakage in -CURRENT
 
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_at_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_at_mips.inka.de

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Received on Mon Dec 22 2008 - 04:50:05 UTC

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