[libvirt-users] Undefined interfaces?

[Laine Stump]

On 04/18/2011 01:12 PM, Alex wrote:
> Hi,
> I have a working fc14 install with a few virtual interfaces set up,
> and just noticed the following in messages:
>
> Apr 18 13:07:43 fc14 libvirtd: 13:07:43.155: error :
> interfaceGetXMLDesc:355 : internal error could not get interface XML
> description (netcf: NETLINK socket operation failed - couldn't find
> ifindex for interface `br0:0`)
> Apr 18 13:07:43 fc14 libvirtd: 13:07:43.165: error :
> interfaceGetXMLDesc:355 : internal error could not get interface XML
> description (netcf: NETLINK socket operation failed - couldn't find
> ifindex for interface `eth0:0`)
> Apr 18 13:07:43 fc14 libvirtd: 13:07:43.175: error :
> interfaceGetXMLDesc:355 : internal error could not get interface XML
> description (netcf: NETLINK socket operation failed - couldn't find
> ifindex for interface `eth1:0`)
> Apr 18 13:07:43 fc14 libvirtd: 13:07:43.185: error :
> interfaceGetXMLDesc:355 : internal error could not get interface XML
> description (netcf: NETLINK socket operation failed - couldn't find
> ifindex for interface `eth1:1`)
>
> I see several references that indicate this may be a bug. Or have I
> configured something wrong?

I'm assuming that you're running virt-manager, otherwise 
interfaceGetXMLDesc wouldn't be getting called so much. There could be 
some strange interaction between netlink and interfaces with ":" in the 
name. I'm just packing up to leave on a 5 day trip, though, and don't 
have time to investigate right now, but there are some things you can 
look at:

1) try running "virsh iface-list --all", then "virsh iface-dumpxml 
--inactive <name>" where <name> is the name of each interface displayed 
in the iface-list command. See which are successful.

2) also try "virsh iface-dumpxml <name>" (ie withough the --inactive) 
for each.

3) send the results of the above, as well as the output of "ifconfig -a"

4) also the output of "ls /etc/sysconfig/network-scripts/ifcfg-* | while 
read f; do echo =====; echo $f; cat $f; done"

Something from that could help in reproducing the problem.

> I have some interfaces configured to be a bridge and others are
> configured as a regular network, with the guests being masqueraded.
> It's certainly possible I've configured something incorrectly.
>
> I'm not sure what information to provide to help troubleshoot this.
> Any information would be greatly appreciated.
>
> Thanks,
> Alex
>
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