From owner-freebsd-net@freebsd.org Tue Jul 7 11:55:17 2020 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 41FD435F179 for ; Tue, 7 Jul 2020 11:55:17 +0000 (UTC) (envelope-from f.colliot@gmail.com) Received: from mail-vs1-xe29.google.com (mail-vs1-xe29.google.com [IPv6:2607:f8b0:4864:20::e29]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B1LTw3Sn2z4TP8 for ; Tue, 7 Jul 2020 11:55:16 +0000 (UTC) (envelope-from f.colliot@gmail.com) Received: by mail-vs1-xe29.google.com with SMTP id x205so2129363vsc.11 for ; Tue, 07 Jul 2020 04:55:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=cR0RipAzCWypDcMPFiKiMjiqHG10ALuuYBokodI4f/g=; b=lvMp/tMp72kUYCUdEFMv9HH/oYE2dDpBc6zTpXedpjI2o/IvvdtitQxyf47N5FwTOh uplNZbNsGhONX5Vt+9ucAdeHcHenxk5c1hKAaPmUdqMhFBL4r6uGDrZlBQfkdwDWj/0h YxxOl09MESfDO/gxI02NqNpLVAqNQgqbAyuzwl3XzxA46J8xY7aBAY4+HvPsoTFiKQhl HbQZMG/z4o4nJ+g/nq/DgUVXdEpuO0vJs7nbApVSRObyOek9cOso9+UvePHW9pxD665P 071WbBaNkLw/rxM1q3ixuzvpXwnr8VEGPJYplBIYrI7ZAG7jzVQvMiprs+SZm+ZU7doy 1RjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=cR0RipAzCWypDcMPFiKiMjiqHG10ALuuYBokodI4f/g=; b=NrWOZBcOw3z9X5tzylAZBT5qI2jLgFz1VpUmkHsEovolO4Mm2xqSFdMuHyAry8XutE qiBt7glgHw4ZznCypAcgYkNwwLnlxgh5vUKsF1CxZrIHYWOIHOFt0G4te8s8GScNqnSU GdaE3ukVzwZcHF/TQnOBXkvfLEK7/9lJWHAmo3ITb9UCZ8f/HR4NZzhNYr/GLrjq3Ym2 Waxsn7GC5LiFF0gnZpU8T/8Cgl2OoHogz1pFnvWOlfJgH+PeCrFQc13aFlJsFIUZMu0j nvBnaUkIWpMS6EBONjx5trYkD2sAwsMTNcRlD+yPYBtoPVhgHctPs712Fk9S/47l3RKU iRqQ== X-Gm-Message-State: AOAM531w44WuEvVPIxMVRifQcJOOOugBTdwQOQ6aFvDEYfWkGfaaR2BX JSCMj7MNWjnOBb0xJydhBwFtS+eZChJ1o4+iXnuCtJs3taw= X-Google-Smtp-Source: ABdhPJyDCtDoR3dRzXXX2bzQtNhnkamfOI/YXMB8lNu+mgHFPHaeh6hwklHBe4GzGGRObuRA3VnD+Y/OLHtPkaJS1VQ= X-Received: by 2002:a67:8084:: with SMTP id b126mr13673777vsd.163.1594122915525; Tue, 07 Jul 2020 04:55:15 -0700 (PDT) MIME-Version: 1.0 References: <2516812c-667c-d24a-d100-aea0f7e60b69@selasky.org> In-Reply-To: <2516812c-667c-d24a-d100-aea0f7e60b69@selasky.org> From: Fabrice Colliot Date: Tue, 7 Jul 2020 13:55:04 +0200 Message-ID: Subject: Re: Multicast: membership to (*, G) group after leaving a (S, G) group To: Hans Petter Selasky Cc: freebsd-net@freebsd.org X-Rspamd-Queue-Id: 4B1LTw3Sn2z4TP8 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=lvMp/tMp; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of fcolliot@gmail.com designates 2607:f8b0:4864:20::e29 as permitted sender) smtp.mailfrom=fcolliot@gmail.com X-Spamd-Result: default: False [-3.91 / 15.00]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; NEURAL_HAM_MEDIUM(-0.96)[-0.965]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; NEURAL_HAM_LONG(-1.01)[-1.007]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::e29:from]; NEURAL_HAM_SHORT(-0.94)[-0.939]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; RCVD_COUNT_TWO(0.00)[2]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Jul 2020 11:55:17 -0000 Sorry, I forgot to mention it. I've tried on FreeBSD 11.3 and FreeBSD 12.0. /Fabrice On Tue, Jul 7, 2020 at 1:48 PM Hans Petter Selasky wrote: > On 2020-07-07 12:01, Fabrice Colliot wrote: > > Hi, > > > > I'm using smcroute to join and leave multicast groups and I don't > > understand the behavior of FreeBSD when the group is left. > > > > Here is what I do: > > > > smcroute join em1 10.3.4.5 224.0.55.55 > > ifmcstat -i em1 > > em1: > > inet 10.10.0.1 > > igmpv3 rv 2 qi 125 qri 10 uri 3 > > group 224.0.55.55 mode include > > mcast-macaddr 01:00:5e:00:37:37 > > group 224.0.0.1 mode exclude > > mcast-macaddr 01:00:5e:00:00:01 > > > > smcroute leave em1 10.3.4.5 224.0.55.55 > > ifmcstat -i em1 > > em1: > > inet 10.10.0.1 > > igmpv3 rv 2 qi 125 qri 10 uri 3 > > group 224.0.55.55 mode undefined > > mcast-macaddr 01:00:5e:00:37:37 > > group 224.0.0.1 mode exclude > > mcast-macaddr 01:00:5e:00:00:01 > > > > At this point, I expected to have no membership left on em1 for > 224.0.55.55 > > but ifmcstat shows that the interface is still a member of the group but > in > > undefined mode. > > > > I was wondering if anybody could tell me why the group membership seems > to > > be transitioned to a (*, G) membership when all the (S, G) memberships > are > > removed. > > > > Which version of FreeBSD is this? > > --HPS >