VIMAGE crashes on 9.x with hotplug net80211 devices

[Adrian Chadd]

Hi,

I don't mind tackling the net80211 clone detach path.

I do mind how the default for hotplug is "argh, it doesn't work." :-)

So I'd like to come up with something to fix the basic device detach,
rather than having to actually add CURVNET_*() calls around each
if_free() in each device detach method.



Adrian