From owner-freebsd-isdn Fri Jul 19 4: 9:59 2002 Delivered-To: freebsd-isdn@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6C48337B400 for ; Fri, 19 Jul 2002 04:09:56 -0700 (PDT) Received: from arg1.demon.co.uk (arg1.demon.co.uk [62.49.12.213]) by mx1.FreeBSD.org (Postfix) with ESMTP id E60B943E58 for ; Fri, 19 Jul 2002 04:09:55 -0700 (PDT) (envelope-from arg-bsd@arg1.demon.co.uk) Received: by arg1.demon.co.uk (Postfix, from userid 1002) id 9572B9B04; Fri, 19 Jul 2002 12:09:54 +0100 (BST) Received: from localhost (localhost [127.0.0.1]) by arg1.demon.co.uk (Postfix) with ESMTP id 8CE8E5D0C; Fri, 19 Jul 2002 12:09:54 +0100 (BST) Date: Fri, 19 Jul 2002 12:09:54 +0100 (BST) From: Andrew Gordon X-X-Sender: To: Jan Goebel Cc: Subject: Re: I can only get half the internet! In-Reply-To: Message-ID: <20020719115738.Y48507-100000@server.arg.sj.co.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-isdn@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, 19 Jul 2002, Jan Goebel wrote: > I set up an isdn card in my freebsd-box. I can connect to my provider, ping, > traceroute, resolve names, or work on remote hosts using ssh. > But I can't do anything else e.g. cvsup or even view webpages! > It seems, that my PC doesn't care about the sequence numbers and always > sends back an "ack 1". So I got the latest stable tonight, but nothing changed. I don't know what the real problem is, but you are mis-understanding the tcpdump output here: after the initial SYN handshake, tcpdump switches to showing relative sequence numbers rather than the value on the wire, so "ack 1" is normal here. Use the -S flag to tcpdump if you really want to see the big sequence numbers. > Below is a log of tcpdump when I tried to get a www-page. This shows all going well up until the TCP connection is open and your system tries to send the first data (presumably the HTTP query), which is never acknowledged. As a wild guess, have you tried turning off vj compression? The point at which it fails is the first packet where vjcomp would take effect. [The dump also shows your system doing IPv6 name resolution - which is a waste of time unless you are actually connected to some IPv6 networks] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message