> >Why not?
> >It's about the best address for the dhcpc request...
> 
> Reread.  We aren't talking about DHCP here.

No - which is why I brought it up.
dhcp (client) has to send a udp datagram before the address (of the
interface) is known.

A system I have running (a port of) the bsd dhcpc code passes EVERY
rx packet to dhcpc (including a (probably misaligned) data copy)
just in case it happens to be doing its initial negotiation.

Neither the dhcp client nor server should have to cheat this badly.

    David