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From: louden@MITRE-GATEWAY.ARPA.UUCP
Newsgroups: mod.protocols.tcp-ip
Subject: RFC 986 Questions
Message-ID: <8606111350.AA22295@ucbvax.Berkeley.EDU>
Date: Wed, 11-Jun-86 09:11:10 EDT
Article-I.D.: ucbvax.8606111350.AA22295
Posted: Wed Jun 11 09:11:10 1986
Date-Received: Wed, 11-Jun-86 19:11:57 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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Approved: tcp-ip@sri-nic.arpa

I have a few questions about RFC 986.

First, I have a LAN that is both connected to a PDN and the
ARPANET.  Which addressing method do I use?

Second, what does TCP do for a pseudo header (It contains the IP addresses)
when there are no IP address in X.121 across a PDN?

This may be a can of worms better addressed by saying you use all ISO or
all DoD but not both mixed.