From owner-freebsd-current@FreeBSD.ORG Fri Jun 15 21:09:26 2007 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 22C9016A46B for ; Fri, 15 Jun 2007 21:09:26 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) by mx1.freebsd.org (Postfix) with ESMTP id DB43813C4B7 for ; Fri, 15 Jun 2007 21:09:25 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (unknown [192.168.61.3]) by phk.freebsd.dk (Postfix) with ESMTP id 2438B17380 for ; Fri, 15 Jun 2007 21:09:24 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.14.1/8.14.1) with ESMTP id l5FL9ee8001278 for ; Fri, 15 Jun 2007 21:09:40 GMT (envelope-from phk@critter.freebsd.dk) To: current@freebsd.org From: Poul-Henning Kamp Date: Fri, 15 Jun 2007 21:09:40 +0000 Message-ID: <1277.1181941780@critter.freebsd.dk> Sender: phk@critter.freebsd.dk Cc: Subject: multicast not happy ? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jun 2007 21:09:26 -0000 I set up a really simple network here, two boxes with two cross-over ethernets: 10.1.0.1/24 ------------- 10.1.0.2/24 A B 10.2.0.1/24 ------------- 10.2.0.2/24 Ipforwarding is enabled on both, and "routed" is running with /etc/gateways containing: ripv2 no_solicit no_rdisc_adv And nothing happens at all... routed in both ends complain about: routed: Send mcast sendto(sis2, 224.0.0.9.520): Network is unreachable routed: Send mcast sendto(sis1, 224.0.0.9.520): Network is unreachable Running a tcpdump on one end, the IGMP reports to the new MCast are sent: syv# tcpdump -i vr1 -n -s 2000 -v tcpdump: listening on vr1, link-type EN10MB (Ethernet), capture size 2000 bytes 20:35:24.738693 IP (tos 0x0, ttl 1, id 11501, offset 0, flags [none], proto: IGMP (2), length: 32, options ( RA (148) len 4 )) 10.1.0.1 > 224.0.0.9: igmp v2 report 224.0.0.9 20:35:25.118284 IP (tos 0x0, ttl 1, id 118, offset 0, flags [none], proto: IGMP (2), length: 32, options ( RA (148) len 4 )) 10.1.0.2 > 224.0.0.9: igmp v2 report 224.0.0.9 But no further trafic is sent. Netstat -ian shows the mcast groups joined: vr1 1500 00:00:24:08:62:ed 25 0 8 0 0 01:00:5e:00:00:09 23 7 01:00:5e:00:00:01 23 7 vr1 1500 10.1.0.0/24 10.1.0.1 17 - 7 - - 224.0.0.9 224.0.0.1 vr2 1500 00:00:24:08:62:ee 28 0 9 0 0 01:00:5e:00:00:09 26 7 01:00:5e:00:00:01 26 7 vr2 1500 10.2.0.0/24 10.2.0.1 17 - 7 - - 224.0.0.9 224.0.0.1 as does ifmcstat: vr1: inet 10.1.0.1 group 224.0.0.9 igmpv2 mcast-macaddr 01:00:5e:00:00:09 refcnt 1 group 224.0.0.1 mcast-macaddr 01:00:5e:00:00:01 refcnt 1 vr2: inet 10.2.0.1 group 224.0.0.9 igmpv2 mcast-macaddr 01:00:5e:00:00:09 refcnt 1 group 224.0.0.1 mcast-macaddr 01:00:5e:00:00:01 refcnt 1 Any ideas ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.