Hi. 

I am hitting a bug that manifests in an unregister_netdevice error message. 

I run "remus vm backupserver" and it works fine. then xm destroy the vm at the primary side.

I get messages as follow repeatedly:

[root@server1 ninja]# 

unregister_netdevice:waiting for vif1.0 to become free.. 

Message from syslogd@ at Fri Apr 23 19:50:57 2010 ...

server1 last message repeated 7 times

Message from syslogd@ at Fri Apr 23 19:51:58 2010 ...

server1 last message repeated 6 times

After the problem is triggered processes like ifconfig, service network restart refuse to exit, even with killed. 

Also, I cann't even reboot my physical machine with command or login the console with ssh.

How to fix this? Any suggestions will be appreciated.