Hi,
after a lot of tests I looked at a Xen machine, which also use ethernet
bridges and veths, and I noticed that it always use MAC
address FE:FF:FF:FF:FF:FF for the veths. I have test it on VE's
and...voila! No more mess with the MACs! Now the MAC of the ethernet
bridge is always the same, the host main ethernet interface one.
I don't know the exact reason for this, but I'm sure it is an important
BUG for all who use veths with ethernet bridge.
Please, solve it as soon as you can.
Thanks.
Frank
Al 20/05/10 18:00, En/na users-requ...@openvz.org ha escrit:
Date: Thu, 20 May 2010 09:14:11 +0200
From: frank<fr...@si.ct.upc.edu>
Subject: [Users] Re: network problems: eth0: received packet with own
address as source address
To: users@openvz.org
Message-ID:<4bf4e143.5090...@si.ct.upc.edu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi again,
I have more specific information about this.
Problem seems to be related with the addition of veth to bridge
interface. Main Host interface eth0 is joined to a bridge in startup in
order to VEs can join its veths to the same subnet. This bridge has the
host IP, and it takes its MAC from eth0. But when a VE is started, its
veth is joined to the same bridge, and the bridge changes its MAC to
veth one !! That's when network problems start.
I have made some tests in other servers, and there, bridge MAC remain as
eth0 MAC all the time, it does not change with veth additions.
I don't know why bridge MAC change when a new veth is joined.
Any ideas or suggestions?
Thanks in advance.
Frank
Al 19/05/10 18:00, En/na users-requ...@openvz.org ha escrit:
Date: Wed, 19 May 2010 09:34:31 +0200
From: frank<fr...@si.ct.upc.edu>
Subject: [Users] network problems: eth0: received packet with own
address as source address
To: users@openvz.org
Message-ID:<4bf39487.5010...@si.ct.upc.edu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi,
we have two nodes with Red Hat 5.4 and OpenVZ, sharing a GFS filesystem.
kernel is 2.6.18-164.15.1.el5.028stab068.9PAE
We are having problems with VEs network some time ago. We have 40 VEs,
some of them with venet interfaces and some with veths.
Problem seems to be with veths ones.
Sometimes Nodes seems to frozen intermitently, and in the logs we see
messages like
eth0: received packet with own address as source address
....
eth1: received packet with own address as source address
......
We have reviewed network configurations, MAC addresses, and so on, but
we don't see anything wrong.
For instance, now we are in a situation where we have one VE with two
veths running in one node, and if we move it to the other one,
the other node starts to froze and a lot of messages like later ones
(wrong packets) appear.
We are quite worried with this, so any suggestions will be greatly
appreciated.
Thanks and regards.
Frank
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