Xen users - Feb 2006 - in a domU, 6 network interfaces wanted, only 3 seen

Hello,

I need 6 virtual interfaces in a domU (which will be our firewall).
I''ve
created 6 bridges in dom0, configured everything correctly...

When I start the domU, it can only see 3 of them : eth0, eth1, eth2.

However, the bridges in dom0 are correctly configured, and I can see all 6 
vifs (from vif<DOM_ID>.0 to vif<DOM_ID>.5) when using "brctl
show".

On the domU, I get these lines in syslog :

Feb 14 15:10:14 athena kernel: #### netfront can''t alloc rx grant refs
Feb 14 15:10:14 athena last message repeated 2 times

I''m pretty sure it is related.
Does somebody have informations about this problem ?

Thanks.

-- 
Société Adelux -  http://www.adelux.fr
Sébastien Munch - Administrateur informatique interne
Tél. 01 46 88 60 53 - Fax. 01 47 90 26 32

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On Tuesday 14 February 2006 15:37, Sébastien Munch
wrote:
> Hello,
Hello,
> I need 6 virtual interfaces in a domU (which will be our firewall).
I''ve
> created 6 bridges in dom0, configured everything correctly...
I have (had) the same requirement.
> When I start the domU, it can only see 3 of them : eth0, eth1, eth2.
>
> However, the bridges in dom0 are correctly configured, and I can see all 6
> vifs (from vif<DOM_ID>.0 to vif<DOM_ID>.5) when using
"brctl show".
>
> On the domU, I get these lines in syslog :
>
> Feb 14 15:10:14 athena kernel: #### netfront can''t alloc rx grant
refs
> Feb 14 15:10:14 athena last message repeated 2 times
Not sure where I found it, but in the email archives for this mailing list, 
have a search for this error.
> I''m pretty sure it is related.
> Does somebody have informations about this problem ?
And yes, I do have information about this problem.
There is a limit of 3 interfaces per domU, it''s configured in a 
define-variable, which again is related to some other settings.

I''m the wrong person to ask for the specifics, but the bottom line is,
it''s
(currently?) not possible to have more then 3 interfaces.

I ended up redesigning the network layout with 2 firewalls.

Hope this helps with the problem, even though it''s not what you
probably
wanted to hear.

Kind regards,

Joost Roeleveld

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