From owner-freebsd-current  Thu Nov 13 03:46:01 1997
Return-Path: <owner-freebsd-current>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id DAA06442
          for current-outgoing; Thu, 13 Nov 1997 03:46:01 -0800 (PST)
          (envelope-from owner-freebsd-current)
Received: from awfulhak.demon.co.uk (awfulhak.demon.co.uk [158.152.17.1])
          by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id DAA06436
          for <current@FreeBSD.ORG>; Thu, 13 Nov 1997 03:45:54 -0800 (PST)
          (envelope-from brian@awfulhak.org)
Received: from gate.lan.awfulhak.org (localhost [127.0.0.1])
	by awfulhak.demon.co.uk (8.8.7/8.8.7) with ESMTP id LAA11863;
	Thu, 13 Nov 1997 11:32:28 GMT
	(envelope-from brian@gate.lan.awfulhak.org)
Message-Id: <199711131132.LAA11863@awfulhak.demon.co.uk>
X-Mailer: exmh version 2.0zeta 7/24/97
To: dmaddox@scsn.net
cc: Brian Somers <brian@awfulhak.org>, Johan Granlund <johang@mail.algonet.se>,
        current@FreeBSD.ORG
Subject: Re: ppp and ascend router problems 
In-reply-to: Your message of "Wed, 12 Nov 1997 21:15:41 EST."
             <19971112211541.08486@scsn.net> 
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Thu, 13 Nov 1997 11:32:28 +0000
From: Brian Somers <brian@awfulhak.org>
Sender: owner-freebsd-current@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

> On Thu, Nov 13, 1997 at 01:05:23AM +0000, Brian Somers wrote:
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: HDLC:  00 00 03 04 
> > > c0 23 07 02 08 02 13 09 03 00 c0 7b
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: HDLC:  5f d3 10 50 aa 
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP: Received Configure Request (1) 
> > > state =Req-Sent (6)
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  MRU 1524 
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  ACCMAP 000a0000
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  AUTHPROTO proto = c023
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  PROTOCOMP
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  ACFCOMP
> > > Nov 12 22:35:05 phoenix ppp[621]: tun0: LCP:  ???[13]
> > 
> > The peer has just violated the ppp protocol by asking for a [13] 
> > again :-(
> 
>     I get this sequence from my ISP, too...  The 13 bytes that PPP doesn't
> seem to like appear to be an attempt to negotiate STAC compression, when
> you look at the actual contents of the packets.

There's nothing wrong with anyone sending this once, but after ppp 
has rejected the ConfigReq on this basis, it's illegal for the peer 
to ask for it again.

-- 
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <bri@OpenBSD.org>
      <http://www.Awfulhak.org>
Don't _EVER_ lose your sense of humour....