From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:reply-to:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=K51IrljsAQgFT2i4RjPbmPwUKqylnLKPhj8X4+M5lKQ=; b=PL59ubgHqSFbyy+ybHrJJ1RFUNriZSEmlRz5fLANdKVQJyEx38k8hjpg10bxcT9FUL o9CRfbqcgxwx0ivrtMqX2BWyHah+dhBoIz9m2B+NTXCnAN3XH3InXnfTg4jkzGxfTytc B8/2t0jYP3IREvMLGSglott8khTLo29DQ5LlCb+I0C8FzIdyXyuQGxUHSvSy8pqzUdPF yqtnpL2qNas8f2K/WIZG/hsuiQaLkGVa/JyVfluYM45QL4Kr5SQ90/G6pCA8PnDTfKCw j3V+o/FkBOHnAiV4h3N/HRK5EQkYbTL3hVkdFbCrr5ykD8lal26bUE1tAJFdLdWOP7wx v8ew== Message-ID: <550BABAA.10803@gmail.com> Date: Fri, 20 Mar 2015 16:10:02 +1100 From: Brett Worth MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: [Bridge] bridge port number changing Reply-To: brett@worth.id.au List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: bridge@lists.linux-foundation.org Hi all. This is my first post to this list and I hope you'll be able to = help. I have been using the Linux bridge module for a long time under kvm on ce= ntos. This has not given me any problems until now. I'm adding some host servers and am using HP BL660 blades. The kvm nic script in /etc/kvm creates a tap device then assigns a MAC ad= dress after modifying the first byte to FE. This is so the port 1 host mac doesn't c= hange. On a working host server when running brctl showmacs br0 I see the tap ma= c address and the mac address assigned to the vm on the same port. The tap mac shows as loc= al and the vm mac is not. The problem: Intermittently (once a minute or so) the port number shown for the VM wil= l switch to port 1. During this time the VM cannot be contacted. The tap device mac remai= ns at it's original value. If I wait it will switch back to the correct port number= i.e. the one associated with the tap device at which point network connectivity is re-= established. I have looked for the VM mac address on the LAN but cannot see it so it s= eems to be something internal to the bridge. Can anyone offer a suggestion as to what might be happening? I'm running centos 6.6 and the bridge is 2.3. Regards Brett --=20 /) _ _ _/_/ / / / _ _// /_)/