Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!VAX.FTP.COM!jbvb
From: jbvb@VAX.FTP.COM (James Van Bokkelen)
Newsgroups: comp.protocols.tcp-ip
Subject: 4.3 networking bugs
Message-ID: <8808251714.AA02493@vax.ftp.com>
Date: 25 Aug 88 17:14:17 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 16

The "FIN bit with incorrect sequence number" problem appeared in some
early 4.3 tapes.  There is a fix for it, which I think has been circulated
on comp.bugs.4bsd, and may be available for FTP from ucbarpa.  If not,
I have a copy (pub/fin_bug.43) on vax.ftp.com.  If you don't have source,
bitch at your vendor (the fix first circulated last summer).

Depending on the vintage of your 4.3, there are a number of other bugs
which appear in TCP output, or cause network-related crashes.  I know
of 9 of these, there may be more.

There is another bug, which I just saw:  The Van Jacobsen 4.3 code which
was made public domain a few months ago sends ICMP Source Quench messages
with random values in the "code" field.  I asked a friend with source, and
he says that the field is not initialized (it should always be 0).

James VanBokkelen
FTP Software Inc.