From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4D519986.7070000@ll.mit.edu> Date: Tue, 8 Feb 2011 14:29:10 -0500 From: Jeff Mitchell MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Subject: [Bridge] Bridge suddenly only passes traffic if in promiscuous mode List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: bridge@lists.linux-foundation.org Hello, I have a bridge to various interfaces. There is an IP address on the bridge, and hosts on the interfaces connected to the bridge use the bridge's IP address as a gateway. STP is off and the forwarding delay is set to 0. This has been working fine, however, today I needed to change around some IPv6 addresses on the connected hosts. I made the IPv6 changes and rebooted those boxes, only to find that suddenly no traffic -- IPv4 *or* IPv6 -- was passing through the bridge. When I pulled up tshark to see what was going on, traffic suddenly started flowing again. And even as I type this, as long as tshark is running on that interface (no matter what the capture filter is), traffic is flowing. The moment I stop tshark from running, traffic stops. IOW, the bridge is only passing traffic while in promiscuous mode. I didn't change the IP address on the bridge itself. As far as I can tell I didn't do anything odd whatsoever. But I have no idea what's causing this and I'd really like to not reboot the box if at all possible. Does anyone have any idea what might be causing this and/or how to troubleshoot this? Thanks, Jeff