Hm.  I think I've seen something like this on 1.6.1_RC2, as well.
I was not able to do much troubleshooting, but ISTR it crashed
with a uvm_fault.

I may be able to investigate with another system in a few days.

+j

On Sun, Mar 30, 2003 at 07:57:58PM +0200, Alexander Grigo wrote:
> Hi,
> 
> I'm running current as of 20030213 (not sure) and observe
> a kernel crash after invoking
> # ifconfig stf0 create && ifconfig stf0 destroy
> two times in a row.
> To be more precisely, I ran
> 
> ----------------- 8< -----------------
> 
> #!/bin/sh
> 
> n=1
> while [ "" = "" ] 
> do
>         echo "counter:" $n
> 
>         echo create...
>         ifconfig stf0 create
>         echo set addr...
>         ifconfig stf0 inet6 2002:1234:1234::1
>         echo destroy...
>         ifconfig stf0 destroy
> 
>         sleep 1
>         n=$(($n + 1))
> done
> 
> 
> ----------------- 8< -----------------
> 
> and got a kernel crash during the second 'destroy', i.e.
> the 'echo destroy' appears followed by a prompt to the
> kernel debugger.
> (I tried this twice to be sure that this is repeatable.)
> 
> Anything related to this known?
> 
> 
> Thanks in advance,
> Alexander

-- 
Jeff Rizzo                                         http://boogers.sf.ca.us/~riz