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Date: Mon, 5 May 1997 19:53:19 -0700 (PDT)
From: Alex Nash <alex>
Message-Id: <199705060253.TAA09174@hub.freebsd.org>
To: nsayer@quack.kfu.com, alex, freebsd-bugs
Subject: Re: kern/3452
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Synopsis: ipfw rejected packets respond port unreach instead of host

State-Changed-From-To: open-closed
State-Changed-By: alex
State-Changed-When: Mon May 5 19:47:54 PDT 1997
State-Changed-Why: 
Ipfw's behavior is correct, see Stevens TCP/IP Illustrated Vol 1,
section 21.10: "A received host unreachable or network unreachable
is effectively ignored, since these two errors are considered
transient. ... must not abort the connection.  Instead TCP
keeps trying to send the data that caused the error..."

Reject should not put the remote host into a state of retry.