* netbsd/sys/net/rtsock.c: fix problem when rnh_lookup returned   RNF_ROOT, in route_output().  This seems to be BSD problem, not   KAME problem.  we'll try to check other platforms soon.
* netbsd/sys/net/rtsock.c: fix problem when rnh_lookup returned
  RNF_ROOT, in route_output().  This seems to be BSD problem, not
  KAME problem.  we'll try to check other platforms soon.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame