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From: fujiirm@rpics.UUCP (Roger M. Fujii)
Newsgroups: net.lan,net.unix-wizards
Subject: Re: UDP on Sun and VAXen, HELP#3
Message-ID: <208@rpics.UUCP>
Date: Mon, 4-Nov-85 23:19:33 EST
Article-I.D.: rpics.208
Posted: Mon Nov  4 23:19:33 1985
Date-Received: Thu, 7-Nov-85 05:12:33 EST
References: <3781@dartvax.UUCP>
Distribution: net
Organization: RPI CS Department, Troy  NY
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Xref: watmath net.lan:1123 net.unix-wizards:15604

> For anyone else interested, there were two problems. The first is
> that I trusted 'talk' to be correct and it's not. It does not
> take into account the machine dependencies. The VAXen stores
> bytes in one order and the SUN in the other so while it is a valid
> address on one end, it's reversed on the other. A htons(port)
> fixes that nicely. (The politest comment I heard about talk was
> that it was brain-dead. The comments got a lot worse...)
> 
> The second problem is that the UDP that came with earlier releases
> of 4.2BSD aparently did not checksum UDP correctly while it seems
> that SUN fixed this. The later releases of 4.2 are rumored to have
> this fixed and fixes were posted to net.unix-wizards sometime last
> year, I believe.
> 
>

Could someone repost the bug-fix for the checksum problem in 4.2?
I'm trying to get talk to work between a SUN and a VAX.  I have tried 
the hton....ntoh hacks, but the only thing that has accomplished
is putting hair on the floor.  My hair and I gives thanks in advance.

Roger Fujii
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