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Date:      Wed, 8 May 1996 01:59:51 -0300 (EST)
From:      Joao Carlos Mendes Luis <jonny@gaia.coppe.ufrj.br>
To:        davidg@Root.COM
Cc:        freebsd-questions@freebsd.org
Subject:   Re: slip -> IP Checksum Error ???
Message-ID:  <199605080459.BAA15248@gaia.coppe.ufrj.br>
In-Reply-To: <199605080400.VAA10354@Root.COM> from David Greenman at "May 7, 96 09:00:30 pm"

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#define quoting(David Greenman)
// >  I'm in the process of converting from NetBSD 1.0 to FreeBSD 2.1.0.
// >I had a sliplogin setup that used to work in NetBSD, but when running
// >in FreeBSD generates LOTS of IP Checksum Errors and TCP Checksum Errors.
// >I brought all /etc/sliphome directory.  Browsing the manual, it seens
// >to have the same sintax for all files, so I think it's not a port
// >problem.
// 
// >  I've heard about VJ compression errors in FreeBSD-stable, does
// >this aply to 2.1.0 ?
// 
//    There aren't any VJ compression errors in -stable and there never were.
// There was a bugfix that prevents kernel memory corruption when certain garbage
// packets are received, but VJ compression itself works fine.

Sorry.  Maybe I got some crosstalk... :)

//    I suggest checking hardware flow control; this handled differently in
// FreeBSD than it is in NetBSD.

Well, in tty mode the line works PERFECTLY !  I'm using it right now.
Hylafax also proved to be ok during my first tests, sending and receiving.

I suppose that by hardware flow control you mean stty -ixon -ixoff crtscts,
am I right ?  I thought SLIP would ignore these when active, but will
try.  Oh, I saw some commands in stty not present in the manual: dsrflow,
dtrflow and mdmbuf, all of then disabled.  What are these ?

BTW: It's an external modem, running at 57600 BPS, with on-board 16550.

// -DG
// 
// David Greenman
// Core-team/Principal Architect, The FreeBSD Project

					Jonny

--
Joao Carlos Mendes Luis			jonny@coe.ufrj.br
+55 21 290-4698 ( Job )			jonny@cisi.coppe.ufrj.br
Network Manager				UFRJ/COPPE/CISI
Universidade Federal do Rio de Janeiro



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