Re: xen vs bridges

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sat, Jun 21, 2008 at 01:04:04AM -0400, der Mouse wrote:
> I can't seem to bridge a xennet interface with a vlan interface whose
> parent is a different xennet interface; the second brconfig add
> complains EINVAL.
> 
> This appears to be because the vlan interface's mtu is 1496.  I infer
> from this that xennet is not marked ETHERCAP_VLAN_MTU.  Is this just an
> oversight, or does the Xen network stuff really not support VLAN MTUs?

Nothing in the xennet protocol prevents us from using MTU up to 2k.
The linux frontends and backends limit it to 1500 though, so we'd need
a way to know what MTU backends support. I guess we could just add a
mtu property in the Xen store ...

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--