From owner-freebsd-net@FreeBSD.ORG Fri Feb 3 12:57:03 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 DC34A106566C for ; Fri, 3 Feb 2012 12:57:02 +0000 (UTC) (envelope-from guru@unixarea.de) Received: from ms16-1.1blu.de (ms16-1.1blu.de [89.202.0.34]) by mx1.freebsd.org (Postfix) with ESMTP id 6861D8FC0C for ; Fri, 3 Feb 2012 12:57:02 +0000 (UTC) Received: from [82.113.106.201] (helo=tiny.Sisis.de) by ms16-1.1blu.de with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1RtIhH-0000hv-Sj; Fri, 03 Feb 2012 13:57:00 +0100 Received: from tiny.Sisis.de (localhost [127.0.0.1]) by tiny.Sisis.de (8.14.5/8.14.3) with ESMTP id q13CuvTw002227; Fri, 3 Feb 2012 13:56:57 +0100 (CET) (envelope-from guru@unixarea.de) Received: (from guru@localhost) by tiny.Sisis.de (8.14.5/8.14.3/Submit) id q13CuuxY002226; Fri, 3 Feb 2012 13:56:56 +0100 (CET) (envelope-from guru@unixarea.de) X-Authentication-Warning: tiny.Sisis.de: guru set sender to guru@unixarea.de using -f Date: Fri, 3 Feb 2012 13:56:56 +0100 From: Matthias Apitz To: freebsd-net@freebsd.org Message-ID: <20120203125655.GA2143@tiny> References: <20120117190847.GA1255@tiny> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20120117190847.GA1255@tiny> X-Operating-System: FreeBSD 10.0-CURRENT r226986 (i386) User-Agent: Mutt/1.5.21 (2010-09-15) X-Con-Id: 51246 X-Con-U: 0-guru X-Originating-IP: 82.113.106.201 Cc: "Alfred E. Heggestad" Subject: Re: PPP to UMTS provider && incoming traffic (TCP, UDP) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Matthias Apitz List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Feb 2012 12:57:03 -0000 El día Tuesday, January 17, 2012 a las 08:08:48PM +0100, Matthias Apitz escribió: > 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; the above (only upstream RTP) looks like this in TCPDUMP: 13:32:40.345152 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.366523 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.387812 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.398505 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.419845 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.441164 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.462554 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.483815 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 13:32:40.505161 IP 10.59.47.201.1028 > 86.64.162.35.12978: UDP, length 172 no UDP from 86.64.162.35 (ekiga.net) is coming through while connected via O2 UMTS network; I've borrowed another SIM card from Vodafone.de and with this it looks better like this: 12:07:42.541558 IP 86.64.162.35.11108 > 127.0.0.1.1024: UDP, length 172 12:07:42.549452 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 12:07:42.551554 IP 86.64.162.35.11108 > 127.0.0.1.1024: UDP, length 172 12:07:42.570774 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 12:07:42.572426 IP 86.64.162.35.11108 > 127.0.0.1.1024: UDP, length 172 12:07:42.592137 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 12:07:42.592243 IP 86.64.162.35.11108 > 127.0.0.1.1024: UDP, length 172 12:07:42.611989 IP 86.64.162.35.11108 > 127.0.0.1.1024: UDP, length 172 12:07:42.613485 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 12:07:42.634805 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 12:07:42.656108 IP 109.43.97.247.1024 > 86.64.162.35.11108: UDP, length 172 ... i.e. there is coming RTP traffic down with destination 127.0.0.1 (localhost); but the SIP client 'baresip' does not see this; in 'baresip' only the outbound bit/s shows some value ~64255 bit/s, while the inbound stucks with zero; any idea? Thanks matthias -- Matthias Apitz e - w http://www.unixarea.de/ UNIX since V7 on PDP-11, UNIX on mainframe since ESER 1055 (IBM /370) UNIX on x86 since SVR4.2 UnixWare 2.1.2, FreeBSD since 2.2.5