Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-col!hpctdlb!fish
From: fish@hpctdlb.HP.COM (Dave Fish - Marketing)
Newsgroups: comp.protocols.tcp-ip
Subject: TCP checksums
Message-ID: <3270025@hpctdlb.HP.COM>
Date: 28 May 91 16:48:30 GMT
Organization: Hewlett-Packard CTD, Colo. Spgs.
Lines: 4

I'm interested in how common it is for TCP implementations to use all zeros
for the TCP header checksum.  I know that some HP machines do this but 
how common is this in the real world?