ifconfig wepkey problem

[Johannes Hofmann <hofmann@xxxxxxxxxxxxxxxxxxxxxx>]

Somewhere from  Mar 16 to Mar 20, "ifconfig wi0 wepkey ..." has broken, at
least here on my machine.
It seems to be a kernel problem, as booting an old kernel still works - even
with new ifconfig.
Some printfs showed, that copyin at sys/dev/netif/if_wi.c:1926 is returning 
EFAULT for some reason. 
Any ideas?

Thanks,
Johannes