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Re: inet and brd for peth0 drops in setup_bridge_port() (Re: [Xen-users]

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: inet and brd for peth0 drops in setup_bridge_port() (Re: [Xen-users] Dom0 network problem)
From: "Matt Richardson" <shortpath@xxxxxxxxx>
Date: Thu, 21 Dec 2006 14:07:43 -0800
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On 12/20/06, Dominique Rousseau <d.rousseau@xxxxxxx> wrote:
Le Wed, Dec 20, 2006 at 12:18:37PM +0900, Toshinao Ishii 
[Ishii.Toshinao@xxxxxxxxxxxxxxxxxxxxxxxxxxx] a écrit:
[...]
> where ${dev} is the first argument. I checked these steps and I found
> that the last command `ip addr flush ${dev}` drops the properties of
> inet  and brd.
>
> According to xenwiki/XenNetworking page, peth0 should have network
> address since it comes the interface directly connected to the
> external.
> The drop of inet and brd properties may be the reason of the problem
> that Dom0 cannot communicate with the external machines.

Here, on a setup using the network-bridge topology, we have, after
starting Xen :

- eth0 in Dom0 : which has the ip address
- peth0 : the physical ethernet
- vif0.0 : the other extremity of eth0
- xenbr0 : the bridge where peth0 and vif0.0 (and the further vifX) are
  included

So, from this point of view, what you get seems quite normal.


--
Dominique Rousseau
Neuronnexion, Prestataire Internet & Intranet
57, route de Paris 80000 Amiens
tel: 03 22 71 61 90 - fax: 03 22 71 61 99 - http://www.neuronnexion.fr

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I was having the same difficulty with Etch: networking was broken on
Dom0 when using network-bridge, worked fine with network-dummy.
However, I was just able to install a DomU using debootstrap with
network-dummy selected, then had to switch to network-bridge and
restart xend to get networking happening for both.  ifconfig  on Dom0
shows fe:ff:blah MAC addresses for the bridge, vif, and peth
interfaces, which seems odd to me.  It also seems odd that networking
for Dom0 only works when a DomU is brought up.  But I'm new to this,
so a lot of it seems odd.

--
Matt

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