>>  additional question: are sizeof(long) different on sparc32 and sparc64?
>>  if so, routing socket alignment (ROUNDUP in sys/net/rtsock.c will
>>  have the similar problem.
>sizeof(long) is different between 32bit SPARC and 64bit SPARC.  note that
>ultrasparc hardware is capable of running both and (we eventually hope that
>a :-) NetBSD/sparc64 64bit kernel can/will run both.  the same problem will
>apply to 64bit mips ports that want to run 32bit applications.

	hmm... so, if we run sparc32 /sbin/route on sparc64 kernel,
	/sbin/route will choke due to hardcoded sizeof(long) alignment.

itojun