From owner-freebsd-net@FreeBSD.ORG Wed Jan 18 08:30:08 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 77B81106566C for ; Wed, 18 Jan 2012 08:30:08 +0000 (UTC) (envelope-from volker@vwsoft.com) Received: from gwmbg.elbekies.net (gwmbg.elbekies.net [217.6.211.147]) by mx1.freebsd.org (Postfix) with ESMTP id 22EE28FC16 for ; Wed, 18 Jan 2012 08:30:07 +0000 (UTC) Received: from bel.soho.vwsoft.com (p57A0CD4B.dip.t-dialin.net [87.160.205.75]) (Authenticated sender: relay@elbekies.net) by gwmbg.elbekies.net (Postfix) with ESMTPA id 878232FA; Wed, 18 Jan 2012 09:10:41 +0100 (CET) Received: from [192.168.16.4] (dardanos.sz.vwsoft.com [192.168.16.4]) by bel.soho.vwsoft.com (Postfix) with ESMTP id E686E33CA0; Wed, 18 Jan 2012 09:08:32 +0100 (CET) Message-ID: <4F167E00.9040601@vwsoft.com> Date: Wed, 18 Jan 2012 09:08:32 +0100 From: volker@vwsoft.com User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:9.0) Gecko/20111222 Thunderbird/9.0 MIME-Version: 1.0 To: Matthias Apitz References: <20120117190847.GA1255@tiny> In-Reply-To: <20120117190847.GA1255@tiny> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-MailScanner-ID: E686E33CA0.A0E1E X-VWSoft-MailScanner: Found to be clean X-MailScanner-From: volker@vwsoft.com X-MailScanner-To: freebsd-net@freebsd.org, guru@unixarea.de MailScanner-NULL-Check: 1327478922.13662@Rwup9beXuXJnfXpM3AucNQ Cc: freebsd-net@freebsd.org Subject: Re: PPP to UMTS provider && incoming traffic (TCP, UDP) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jan 2012 08:30:08 -0000 On 01/17/12 20:08, Matthias Apitz wrote: > > Hello, > > I'm used to connect my FreeBSD 10-CURRENT netbook to Internet via PPP; > the provider in question is a German O2 UMTS provider; so far so good, > i.e. all is working as it should: outbound HTTP, SSH, SMTP (I'm just > sending this mail through such a connection), ... > > what does not work is VoIP; the call is established via SIP (using a > STUN server), but remote audio RTP packages are not coming down; I > checked this with TCPDUMP: only upstream RTP is send, no incoming UDP; > > as well I checked incoming TCP, for example incoming SSH or HTTP; it > seems that incoming UCP/TCP is just not coming through the PPP link; > > before bother (complain) the provider with this, I wanted to ask if I > miss something in the PPP configuration to get incoming delivered; > > note: I'm not talking about NAT to some stations on a LAN, I just want > get IP to the local host (interface tun6); as well I disabled ipf(8) > which I have configured normaly; > > any ideas? thanks in advance > > matthias Matthias, can you please check the IP address you're getting from your mobile network provider? AFAICT most hand out IPv4 addresses from private network address space (RFC-1918). For some European countries I can tell, I've never seen routable addresses being used on 3G networks. That might be the most likely cause of your trouble. All the best, Volker