documentation.

as well commit it!). This is the new ipfw syntax that allows matching
on the nexthop destination chosen by ip_output.

and havoc upon all mankind and testbed users.

work for virtual links when the node was a router, so pull them out
until I have the ipfw changes installed (the changes to use nexthop).

kernel since its hacks are so untested.

own script. It was just clutter in that library. Kill delay_update
since its not really used anymore, but give a delaysetup a -u option
to do that, just in case.