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RE: [Xen-users] Networking change in Xen unstable

To: "Takeshi Sone" <ts1@xxxxxxxxx>, "Mark Williamson" <mark.williamson@xxxxxxxxxxxx>
Subject: RE: [Xen-users] Networking change in Xen unstable
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Sun, 10 Jul 2005 18:28:15 +0100
Cc: John Fairbairn <webmaster@xxxxxxxxxxxx>, ian.pratt@xxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx, "Carl Holtje ; 021; vcsg6; " <cwh0803@xxxxxxxxxx>
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Thread-topic: [Xen-users] Networking change in Xen unstable
 
> What is veth0 thing?

Although you can give dom0 a local ip address on the bridge (xen-br0),
its not actually entirely safe to do so if you're running services that
are accessible from other domains -- its possible to get into buffer
startvation situations, particularly with UDP services. 

The unstable tree creates a veth0 interface to use in dom0 that avoids
these issues. You'll have to update your iptables etc rules accordingly.

If you're not running services accessible from other domains you could
continue to assign an IP addr to the bridge.

Ian

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