Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!van-bc!mplex!fff
From: fff@mplex.UUCP (Fred Fierling)
Newsgroups: comp.protocols.tcp-ip
Subject: SCO TCP/IP
Keywords: SCO SLIP runt packet
Message-ID: <5@mplex.UUCP>
Date: 28 Jul 90 00:49:27 GMT
Distribution: na
Organization: Microplex Systems Ltd
Lines: 11

We are running SCO Xenix 386 TCP/IP v1.0.1h (well, trying too!) and have noticed
a little 4 byte packet prepended to every full size packet on our SLIP link.
A datascope connected to the SLIP port shows this being transmitted (hex):

   c0  00 00 08 00  c0  45 00 00 2D ...

The second packet (starts with "45") fully conforms to RFC 791, but what is
that little runt doing there?
-- 
Fred Fierling     fff@eng.mplex.bc.ca     Tel: 604 875-1461  Fax: 604 875-9029
Microplex Systems Ltd   265 East 1st Avenue   Vancouver, BC   V5T 1A7,  Canada