regression (between Apr 16-23) panic in swi4 clock sio

[Andrew Pantyukhin]

On Wed, Apr 23, 2008 at 08:05:04PM +0900, Randy Bush wrote:
> > Disabling ipv6 in rc.conf let the system boot. A few textdumps
> > here:
> > http://heka.cenkes.org/sat/diffs/20080423-swisio-textdumps.tbz
> 
> same here

It looks like the regressive commit is within
2008.04.20.01.00.00-2008.04.21.01.00.00

There were few commits during that day, none seems related. The
major one was Sam's wireless work, but I can't imagine how it can
be related.