From owner-freebsd-net@freebsd.org Fri Nov 22 12:51:19 2019 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id DF0101B7E01 for ; Fri, 22 Nov 2019 12:51:19 +0000 (UTC) (envelope-from vit@otcnet.ru) Received: from mail.otcnet.ru (mail.otcnet.ru [194.190.78.3]) by mx1.freebsd.org (Postfix) with ESMTP id 47KGWp3DzSz3GvH for ; Fri, 22 Nov 2019 12:51:18 +0000 (UTC) (envelope-from vit@otcnet.ru) Received: from MacBook-Gamov.local (unknown [195.91.148.145]) by mail.otcnet.ru (Postfix) with ESMTPSA id 5DBBA8B7C4 for ; Fri, 22 Nov 2019 15:51:15 +0300 (MSK) To: freebsd-net@freebsd.org From: Victor Gamov Subject: IGMP on FreeBSD-12.1 Organization: OstankinoTelecom Message-ID: Date: Fri, 22 Nov 2019 15:51:14 +0300 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 47KGWp3DzSz3GvH X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of vit@otcnet.ru designates 194.190.78.3 as permitted sender) smtp.mailfrom=vit@otcnet.ru X-Spamd-Result: default: False [-5.48 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mail.otcnet.ru]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; HAS_ORG_HEADER(0.00)[]; DMARC_NA(0.00)[otcnet.ru]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE(-3.28)[ip: (-8.64), ipnet: 194.190.78.0/24(-4.32), asn: 50822(-3.46), country: RU(0.01)]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:50822, ipnet:194.190.78.0/24, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Nov 2019 12:51:19 -0000 Hi All I have FreeBSD 12.1-STABLE r354850 When I started ffmpeg -i 'udp://232.232.9.57:3344?localaddr=10.200.207.35&source=10.200.205.2' then IGMP-Join sended out and ifmcstat reports about 232.232.9.57 on proper interface. I kill ffmpeg but ifmcstat still reports about 232.232.9.57 on interface. Any following ffmpeg start does not generate IGMP-Join as I understand because kernel think it still joined to this multicast. Then I start this scenario on FreeBSD 11.3-STABLE #1 r354778 then group subscription immediately removed from interface at the moment when ffmpeg killed. More things. When I request multicast on 11.3 from 12.1 then 11.3 respond to General-query like this: ===== 10.200.207.42 > 224.0.0.22: igmp v3 report, 1 group record(s) [gaddr 232.232.99.7 is_in { 10.200.208.33 }] ===== When I request multicast on 12.1 from 11.3 then 12.1 respond to General-query like this: ===== 10.200.207.35 > 224.0.0.22: igmp v3 report, 1 group record(s) [gaddr 232.232.9.44 to_ex { }] ===== And when ffmpeg started on 12.1 first time as following ffmpeg -i 'udp://@232.232.9.44:3344?localaddr=10.200.207.35&source=10.200.205.2' then 12.1 generates IGMP-Join without source: ===== 10.200.207.35 > 224.0.0.22: igmp v3 report, 1 group record(s) [gaddr 232.232.9.44 to_ex { }] ===== So, I assume 12.1 have some problem with IGMP -- CU, Victor Gamov