Date: Sat, 12 Apr 2008 13:23:33 -0400 From: david robertson <dr@nevernet.com> To: freebsd-net@freebsd.org Subject: bridge interface down, yet still bridging? Message-ID: <B6BFE073-4078-4733-AD96-127B9DCBA1B8@nevernet.com>
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I've got an issue that only crops up every so often (every few months), and it's theoretically impossible. I've got two FreeBSD 6.2 firewalls in a failover state, using bridging (I don't control .1, and don't have a choice). I use ifstated and carp to monitor which one is master, and which is slave. The slave has the bridge0 interface down, and the master has it up. On to the issue: Last night the problem came back, the network looped via the bridges, even though the bridge interface on the backup failover was in a 'down' state. The loop was verified by our hosting company, the two uplink ports that the firewalls are in were doing the exact same amount of traffic inbound and outbound - definately a loop. As soon as they disabled one of the firewall ports, everything went back to normal. At this point, I verified the bridge interface was infact down on the failover firewall. Hosting company turned back on the port, and blam - loop. Has anyone ever come across this specific issue before?
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