[Xen-users] Problem: hidding all NICs from dom0, how to create a virtual one

[Jonathan Vogt <xen-users@xxxxxxxxxxx>]

Hello,

first of all some information, I have a PC with two NICs. One is wired and 
connected to a DSL-Modem and one is wireless. I handed both of them over to a 
domU with pciback.hide=(00:0f.0)(00:0a.0). 
The reason for this setup is that I don't have another NIC for the modem and 
actually don't need wired network access. Another point was that I wanted to 
keep the dom0 really small and without any services (except ssh).

Since dom0 doesn't have a hardware NIC anymore, I have a problem. The bridge 
appears and if I give it an ip (192.168.80.2) I'm able to ping the Internet 
but no NAT and no Forwards or anything works even if I accept all traffic on 
the router.
Using my Notebook I'm able to surf the net and everything. The firewallsetup 
for both nets is more or less the same, so it should work.

So I'm sort of stuck here. My question is, can I create a virtual NIC for dom0 
aswell (like vif1.0 in the domUs)? If so how? I tried looking at the xen 
networkscripts but didn't find any solution there. The various search engines 
didn't help either, they all had a spare NIC.

In case my explanation wasn't understandable, I got a network sketch online in 
hope that helps. http://jonathan.v-o-g-t.net/images/xen.gif is how it's 
supposed to look/function like. (vdr and webserver are not implemented yet)

Cheers
Jonathan

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