On Mon, 5 Oct 1998 sthaug@nethelp.no wrote:

> Not "routed differently". "Treated somewhat specially" is a reasonable
> description of how for instance Cisco routers process ICMP messages (that
> must be handled by the router itself) at lower priority than other traffic.
> ICMP messages passing *through* the router is treated like any other
> traffic.

Sure, but that is irrelevant in this case because the router has to handle
UDP itself too, and anything to the router is often handled very
differently from anything through the router.  

The claim is that ICMP is "treated specially" in some way.  ICMP to the
router is not really treated differently than UDP to the router.