After an uptime of around 70 days with -current (i386),  the machine
paniced, during a large make.  Now when /etc/netstart is run, 
route fails adding both the localhost and the gateway stating that the
routing socket exists.  The kernel also complains about an arp request.

The actual messages are:

arp_rtrequest: bad gateway valuertinit: wrong ifa (f86d6500) was (f86db200)
writing to routing socket: file exists
...
etc.

Any ideas?   Do I need to remove this 'routing socket' ?  Where does it live?

Cheers
Tim.