(usagi-users 03182) Re: Major deadlock: unregister_netdevice: waiting for <device> to become free. Usage count = 1

[Daniel NAKATA <dnakata@xxxxxxxxxxxxxxxx>]

I believe this issue is within the tunnel code, because I have the same issue 
with my TUN/TAP interfaces; probably some unrelated code changed in the 
kernel which is now causing the issue.

Just a hunch, because I have several sit tunnels, and have never had this 
particular problem on those interfaces.  I'm actually going to investigate 
this further, myself, because it seems 2.6.10 still has not addressed this 
particular issue (according to the ChangeLog, at least).

First off, it would be nice to know of a reliable way to reproduce this 
condition... Does anybody have any additional leads in this respect?

--Daniel