By some reason the standalone bootp/dhcp code checks that the netmask 
received in the dhcp message is in a smaller address range than the
network class. This check has always been in the code, but it gives
problems sometimes: If the net is 192.168/16 then the standalone code
won't work. This is the check, in sys/lib/libsa/bootp.c:

	/* Check subnet mask against net mask; toss if bogus */
	if ((nmask & smask) != nmask) {
#ifdef BOOTP_DEBUG
		if (debug)
			printf("subnet mask (%s) bad\n", intoa(smask));
#endif
		smask = 0;
	}


If noone has any good reason for this check to be left, I'll remove it.


-- Ragge