>>   	hmm... so, if we run sparc32 /sbin/route on sparc64 kernel,
>>   	/sbin/route will choke due to hardcoded sizeof(long) alignment.
>well, it *should*.  note that it goes through an emulation layer
>and we're gonna need to special case a Lot of ioctl's here for this
>to work sanely (or, push part of this support out of compat/netbsd32).
>this emulation layer isn't quite finished yet though eduardo has done
>a large amount of work to make it so, at least for sparc64 (where it
>is essential!)
>the idea is:  there is no reason we can not run 32bit binaries on a
>64bit kernel.  it is simply a matter of programming.  :-)

	so, will the emulation layer would change alignment constraints on
	all the data on routing socket?  hmm, I see I'm relieved.

	back to the original question (CMSG_ALIGN), which one do you prefer?

itojun