NDP breakage in -CURRENT
qing.li at bluecoat.com
Mon Dec 22 05:50:05 UTC 2008
Yes, probably a bug introduced by arp-v2, I will investigate and
get back to you.
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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