Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!mordor!sri-spam!ames!pasteur!ucbvax!A.ISI.EDU!CERF
From: CERF@A.ISI.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Hop problem
Message-ID: <[A.ISI.EDU]26-Jan-88.08:05:19.CERF>
Date: 26 Jan 88 13:05:00 GMT
References: <brescia@PARK-STREET.BBN.COM>
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 10

Mike,

the "packet radio" referenced was not the DARPA packet radio but the
amateur packet radio. I don't know how those systems handle the TTL
field. The DARPA packet radio system didn't pay any attention to TTL
except at gateways since the packet radio net was "below" the IP 
protocol level. The amateur system, however, probably operates at the IP 
level like some of the more recent combined packet switch/gateways such
as the Proteon 4200, Cisco boxes, and so on.

Vint