linux-kernel - [ipv6] Odd behaviour...

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Date:	Tue, 27 May 2008 00:58:30 +0200
From:	Ian Kumlien <pomac@...or.com>
To:	Linux-kernel <Linux-kernel@...r.kernel.org>
Cc:	linux-net <Linux-net@...r.kernel.org>
Subject: [ipv6] Odd behaviour...

Hi, 

I just recently acquired a new ipv6 tunnel since my two previous brokers
has gone out of business. I now use hurricane electrics tunnel since i
have really good ping times to it's node in Amsterdam.

Anyways, i have setup a local network tunnel and enabled forwarding.

After about 300 seconds, it all stops working. I have to disable and
re-enable it on the firewall/router to get it working again.

tcpdump shows the router/firewall doing odd things like:
(i renamed my host to piv6)

00:48:14.294173 IP6 piv6 > igloo.stacken.kth.se: ICMP6, echo request,
seq 321, length 64

00:48:14.341288 IP6 igloo.stacken.kth.se > piv6: ICMP6, echo reply, seq
321, length 64

00:48:14.341317 IP6 fe80::55e4:1b90 > igloo.stacken.kth.se: ICMP6,
redirect, piv6 to piv6, length 160

00:48:14.341332 IP6 igloo.stacken.kth.se > piv6: ICMP6, echo reply, seq
321, length 64
---

fe80::55e4::1b90 is the local ip of the ipv6 tunnel.
(note: the packet never arrives at it's destination)

Any ideas of what could be going wrong?			

-- 
Ian Kumlien <pomac () vapor ! com> -- http://pomac.netswarm.net

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