From: Pekka Savola <pekkas@netcore.fi>
To: md@linux.it, netdev@vger.kernel.org
Subject: Re: broken link-local multicast?
Date: Fri, 15 Feb 2008 09:31:00 +0200 (EET) [thread overview]
Message-ID: <alpine.LRH.1.00.0802150928020.3621@netcore.fi> (raw)
In-Reply-To: <20080214162834.GA29186@bongo.bofh.it>
On Thu, 14 Feb 2008, Marco d'Itri wrote:
> Does anybody have any idea about how to debug this?
>
> root@frwl-5a:~# ping6 -c 1 -I eth1 ff02::1
> connect: Network is unreachable
Maybe 'netstat -gn' could give clues, because you should be receiving
a response at least from the loopback address. Maybe your loopback
interface has went down, or ospf6d took it down and back up (at least
some time ago, kernel's v6 got very confused after that).
You may also want to check out that your link-local address on the
interface you're pinging is still OK.
# netstat -gn | grep ff02
lo 1 ff02::1
eth0 2 ff02::1:ff7b:259
eth0 1 ff02::1
# ping6 -c 1 -I eth0 ff02::1
PING ff02::1(ff02::1) from fe80::207:e9ff:fe7b:259 eth0: 56 data bytes
64 bytes from ::1: icmp_seq=0 ttl=64 time=0.057 ms
--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
next prev parent reply other threads:[~2008-02-15 7:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-14 16:28 broken link-local multicast? Marco d'Itri
2008-02-15 7:31 ` Pekka Savola [this message]
2008-02-15 7:58 ` David Stevens
2008-02-18 1:21 ` Marco d'Itri
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