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Re: [Xen-users] Problem with multiple IPs in DomU

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Problem with multiple IPs in DomU
From: Dominik Klein <dk@xxxxxxxxxxxxxxxx>
Date: Fri, 23 Mar 2007 09:06:45 +0100
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Pavel Georgiev schrieb:
I`m trying to setup interface aliases in domU (eth0:1-5) but when I do ifconfig eth0:1 1.2.3.X , DomU sends the following arp to the world:

16:17:33.585940 arp reply 1.2.3.Y is-at 00:16:3e:3d:35:28 (quote from tcpdump on eth0 on the DomU)

where 1.2.3.Y is the IP of the eth0.

So when I try to bring the 5 aliases at boot time I send 5 arp replies, all saying that my eth0 IP is at my hw address and nothing is said for the 5 aliases so the world never finds about them.

Have anyone got a similar problem?
Dom0 and DomU kernels build from source (xen 3.0.4.1; kernel 2.6.16.33), OS Ubuntu 6.06.1

Instead of using interface aliases, you should use the benefits of iproute2 and just put multiple IP adresses on one interface using "/sbin/ip".

Works like a charm here.

Regards
Dominik

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