From owner-freebsd-bugs@FreeBSD.ORG Wed Mar 26 19:20:02 2014 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5FCCB83E for ; Wed, 26 Mar 2014 19:20:02 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3C0A1E5F for ; Wed, 26 Mar 2014 19:20:02 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.8/8.14.8) with ESMTP id s2QJK2Te024982 for ; Wed, 26 Mar 2014 19:20:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.8/8.14.8/Submit) id s2QJK2ma024981; Wed, 26 Mar 2014 19:20:02 GMT (envelope-from gnats) Resent-Date: Wed, 26 Mar 2014 19:20:02 GMT Resent-Message-Id: <201403261920.s2QJK2ma024981@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Kensaku MASUDA Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C17866FB for ; Wed, 26 Mar 2014 19:12:04 +0000 (UTC) Received: from cgiserv.freebsd.org (cgiserv.freebsd.org [IPv6:2001:1900:2254:206a::50:4]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AEA55E27 for ; Wed, 26 Mar 2014 19:12:04 +0000 (UTC) Received: from cgiserv.freebsd.org ([127.0.1.6]) by cgiserv.freebsd.org (8.14.8/8.14.8) with ESMTP id s2QJC4EA080295 for ; Wed, 26 Mar 2014 19:12:04 GMT (envelope-from nobody@cgiserv.freebsd.org) Received: (from nobody@localhost) by cgiserv.freebsd.org (8.14.8/8.14.8/Submit) id s2QJC4sq080292; Wed, 26 Mar 2014 19:12:04 GMT (envelope-from nobody) Message-Id: <201403261912.s2QJC4sq080292@cgiserv.freebsd.org> Date: Wed, 26 Mar 2014 19:12:04 GMT From: Kensaku MASUDA To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Subject: misc/187980: Don't respod an IGMP query X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Mar 2014 19:20:02 -0000 >Number: 187980 >Category: misc >Synopsis: Don't respod an IGMP query >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Mar 26 19:20:01 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Kensaku MASUDA >Release: 9.2 STABLE/10 STABLE >Organization: none >Environment: FreeBSD yatagarasu.greg.jp 9.2-STABLE FreeBSD 9.2-STABLE #8 r262925: Sun Mar 9 03:46:16 JST 2014 root@yatagarasu.greg.jp:/usr/obj/usr/src/sys/GENERIC amd64 FreeBSD test-freebsd.greg.jp 10.0-STABLE FreeBSD 10.0-STABLE #0 r263296M: Wed Mar 26 21:36:20 JST 2014 root@test-freebsd.greg.jp:/usr/src/sys/amd64/compile/ALTQ_MULTICAST_ROUTER amd64 >Description: I have any freebsd boxies and others with multicast client/server. And I have found a problem that look like an one way multicast communication bewteen freebsd to freebsd. Then, investigation noticed the strange point. 1) freebsd box do NOT respond "IGMP QUERY" packet. 2) At 1) time, increase "unknown/unsupported protocol" counter of "netstat -s -p ip". 3) But querier of box is respond it. >How-To-Repeat: 1) Following topology are builded. +--------+ +---------+ |Other OS| |FreeBSD A| +----+---+ +----+----+ | | -----+----+-----+--------- | +----+----+ |FreeBSD B| <- pimdd or mrouted installed +----+----+ | ----------+------+--------- | +----+----+ |FreeBSD C| +---------+ 2) FreeBSD B is muticast router(recommending pimdd, because mrouted look like a broken). 3) All boxes /wo FreeBSD B are joined same multicast 239.0.0.0/8. 4) All boxes transmit a multicast packet each other. I think router can not detect a leaves on freebsd only segment. And result of my enviroment are following. Router# netstat -g IPv4 Virtual Interface Table Vif Thresh Local-Address Remote-Address Pkts-In Pkts-Out 0 1 172.31.1.29 185 198 1 1 172.31.2.29 198 0 2 1 172.31.3.29 0 0 IPv4 Multicast Forwarding Table Origin Group Packets In-Vif Out-Vifs:Ttls 172.31.1.144 239.255.255.250 24 0 <- Other OS 172.31.2.254 239.255.255.250 198 1 0:1 <- FreeBSD C 172.31.1.26 239.255.255.250 161 0 <- FreeBSD A IPv6 Multicast Interface Table Mif Rate PhyIF Pkts-In Pkts-Out 0 0 re1 0 0 1 0 re2 0 0 2 0 re3 0 0 FreeBSD-C% netstat -s -p igmp igmp: 1352 messages received 0 messages received with too few bytes 0 messages received with wrong TTL 0 messages received with bad checksum 1351 V1/V2 membership queries received 0 V3 membership queries received 0 membership queries received with invalid field(s) 1351 general queries received 0 group queries received 0 group-source queries received 0 group-source queries dropped 0 membership reports received 0 membership reports received with invalid field(s) 0 membership reports received for groups to which we belong 0 V3 reports received without Router Alert 0 membership reports sent FreeBSD-C% netstat -s -p ip ip: 135375673 total packets received 0 bad header checksums 0 with size smaller than minimum 0 with data size < data length 0 with ip length > max ip packet size 0 with header length < data size 0 with data length < header length 0 with bad options 0 with incorrect version number 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 packets reassembled ok 2397343 packets for this host 36240 packets for unknown/unsupported protocol 131467437 packets forwarded (0 packets fast forwarded) 86 packets not forwardable 0 packets received for unknown multicast group 0 redirects sent 2547682 packets sent from this host 84 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 0 output packets discarded due to no route 2858 output datagrams fragmented 5900 fragments created 0 datagrams that can't be fragmented 0 tunneling packets that can't find gif 1 datagram with bad address in header >Fix: >Release-Note: >Audit-Trail: >Unformatted: