better MTU support...

[John-Mark Gurney]

In a recent experiment w/ Jumbo frames, I found out that sending ip
frames completely ignores the MTU set on host routes.  This makes it
difficult (or next to impossible) to support a network that has both
regular and jumbo frames on it as you can't restrict some hosts to the
smaller frames.

I now have a patch to ip_output that makes it obay the MTU set on the
route instead of that of the interface.

Please review: http://people.FreeBSD.org/~jmg/ip_mtu.diff

Thanks.

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."