Date: Sat, 28 Jun 2008 12:06:15 -0500 From: Kirk Strauser <kirk@strauser.com> To: FreeBSD Questions ML <freebsd-questions@freebsd.org> Subject: Change in /etc/rc.conf:ipv6_defaultrouter Message-ID: <DD1CEBD6-5885-4D79-863C-8BAC12E9352A@strauser.com>
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I've been using IPv6 on my FreeBSD-7 host for quite some time. My
IPv6 router is a different machine, so the FreeBSD server is just a
regular host on the network.
This morning I discovered that I couldn't pass packets to hosts
outside my LAN from FreeBSD, although an OS X host on the same LAN had
no problems pinging www.kame.net.
I had this in my /etc/rc.conf:
ipv6_ifconfig_fxp0="2001:470:a80a:1:2d0:b7ff:fe0e:3a4a prefixlen
64"
ipv6_defaultrouter="fe80::213:10ff:fe79:137a"
Whenever I'd try to ping6 my local router, I'd get:
ping6: UDP connect: Network is unreachable
Also, the routing table seemed a bit screwy and was sending everything
to lo0:
$ netstat -nr -f inet6
[...]
default fe80::213:10ff:fe79:137a
UGS lo0
I found two workarounds:
ipv6_defaultrouter="2001:470:a80a:1::1"
and
ipv6_defaultrouter="fe80::213:10ff:fe79:137a%fxp0"
I'm leaning slightly toward the latter, as it still uses the
guaranteed-configured link local addresses, but the latter works OK
too (although it didn't when I originally configured this many months
ago, which is why I was using link local routing in the first place).
So, I'm not too sure which is right or wrong, but I definitely know
that something has changed recently. Consider this a heads-up if you
want.
--
Kirk Strauser
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