Re: [Xen-devel] veth0 stuff in -unstable?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 8 Jul 2005, at 17:29, Nate Carlson wrote:

> Just wondering what veth0 is supposed to be, and the best way to debug 
> this.
veth0 serves two purposes. First, it correctly provides 
checksum-avoidance across the Ethernet bridge. Second, it ensures that 
locally-delivered packets coming from other domains on the same box are 
copied into local buffers. This is actually quite important: otherwise 
we end up tying up network buffers belonging to a domU for unbounded 
time (buffers may wait in socket queues in dom0 for example) and also 
tying up resources in dom0's netback driver.
We have had reports of problems with veth0 though -- possibly the setup 
script (/etc/xen/scripts/network iirc) is broken for some people.
 -- Keir


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