From nobody Mon Mar 07 20:16:22 2022 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id C680F1A040CD for ; Mon, 7 Mar 2022 20:16:40 +0000 (UTC) (envelope-from lutz@iks-jena.de) Received: from annwfn.iks-jena.de (annwfn.iks-jena.de [IPv6:2001:4bd8::19]) (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 4KC8qq5rFcz3mXp; Mon, 7 Mar 2022 20:16:39 +0000 (UTC) (envelope-from lutz@iks-jena.de) X-SMTP-Sender: IPv6:2001:4bd8:0:666:248:54ff:fe12:ee3f Received: from belenus.iks-jena.de (belenus.iks-jena.de [IPv6:2001:4bd8:0:666:248:54ff:fe12:ee3f]) by annwfn.iks-jena.de (8.15.2/8.15.2) with ESMTPS id 227KGMSE031043 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 7 Mar 2022 21:16:22 +0100 X-MSA-Host: belenus.iks-jena.de Received: (from lutz@localhost) by belenus.iks-jena.de (8.14.3/8.14.1/Submit) id 227KGMEA030467; Mon, 7 Mar 2022 21:16:22 +0100 Date: Mon, 7 Mar 2022 21:16:22 +0100 From: Lutz Donnerhacke To: Neel Chauhan Cc: freebsd-net@FreeBSD.org Subject: Re: With mpd5 dynamic interfaces, will rtadvd automatically listen? Message-ID: <20220307201622.GA30400@belenus.iks-jena.de> References: <7b054aa0e6565583c2a39c86d1d55abd@FreeBSD.org> List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7b054aa0e6565583c2a39c86d1d55abd@FreeBSD.org> X-message-flag: Please send plain text messages only. Thank you. User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspamd-Queue-Id: 4KC8qq5rFcz3mXp X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of lutz@iks-jena.de designates 2001:4bd8::19 as permitted sender) smtp.mailfrom=lutz@iks-jena.de X-Spamd-Result: default: False [-2.10 / 15.00]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2001:4bd8::/48]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[donnerhacke.de]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RCPT_COUNT_TWO(0.00)[2]; MLMMJ_DEST(0.00)[freebsd-net]; FORGED_SENDER(0.30)[lutz@donnerhacke.de,lutz@iks-jena.de]; RCVD_IN_DNSWL_LOW(-0.10)[2001:4bd8:0:666:248:54ff:fe12:ee3f:received]; SUBJECT_ENDS_QUESTION(1.00)[]; R_DKIM_NA(0.00)[]; ASN(0.00)[asn:15725, ipnet:2001:4bd8::/29, country:DE]; MIME_TRACE(0.00)[0:+]; FROM_NEQ_ENVFROM(0.00)[lutz@donnerhacke.de,lutz@iks-jena.de]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N On Mon, Mar 07, 2022 at 11:09:14AM -0800, Neel Chauhan wrote: > I'm thinking about setting up a dual-stack L2TP server for VPN purposes, > and found that mpd5 lacks good dual-stack support outside of IPv6CP, so we > have to do a makeshift approach. We do use mpd5 for years as PPPoE/L2TP termination (LNS). The IPv6CP is completely sufficient for IPv6 over PPP. > Will rtadvd automatically listen on the mpd5 ng* interface if the said > interface has a public IPv6 address and a user connects (w/ default > config)? Or will I need to trigger rtadvd manually? You can mount a rtavd on the ng* interfaces, but for other routing issues I already deployed Quagga (long time ago), which is able to provide RA to ng* interfaces, too.