Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!VAX.FTP.COM!jbvb
From: jbvb@VAX.FTP.COM (James Van Bokkelen)
Newsgroups: comp.protocols.tcp-ip
Subject: Grist for someone's mill
Message-ID: <8807071742.AA08938@vax.ftp.com>
Date: 7 Jul 88 17:42:41 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 21

If you send an ICMP echo request packet with IP Precedence = Flash Override
and no IP TOS flag bits set, you back a reply with:

Precedence = Routine from:
	vax.ftp.com		Ultrix 2.0
	gaak.lcs.mit.edu	hacked 4.3bsd
	aim.rutgers.edu		TWG VMS
	uunet.uu.net		Sequent Balance
	sun.com			SUNOS 4?

Precedence = Flash Override from:
	xx.lcs.mit.edu		TOPS-20
	big-blue.lcs.mit.edu	VM Wiscnet?
	ibm.com			VM (IBM's 5798 FAL?)
	ucbvax.berkeley.edu	4.3bsd?

Precedence = Flash Override & the Low Delay bit set from:
	oac.ucla.edu		UCLA MVS

James VanBokkelen
FTP Software Inc.