Path: utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!ucbvax!NCNOC.TUCC.EDU!jrr
From: jrr@NCNOC.TUCC.EDU (Joe Ragland)
Newsgroups: comp.sys.proteon
Subject: p4200 routing
Message-ID: <8812241440.AA05001@ncnoc.tucc.edu>
Date: 24 Dec 88 14:40:02 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 15

Mark:

A local VMS host running CMU-TEK TCP/IP has revealed an interesting routing
situation with the p4200s.  Turns out that if one says 'telnet 127.0.0.1'
to the local host loopback address, CMU-TEK forwards the packets to
suranet-gw.tucc.edu (p4200) which then forwards the packets down the
default route.  Since Virginia is advertising default, the packets land
on uvaarpa.virginia.edu and uvaarpa answers the telnet request.

Question:  Should the p4200s be forwarding packets for net 127.0?  It 
may be that this is one of those situations not explicitly covered in
IP routing RFCs.  Whether or not this is the case, I think the p4200s
should discard such packets with an appropriate error message.

--Joe