From owner-freebsd-questions@freebsd.org Wed Jul 21 11:38:01 2021 Return-Path: Delivered-To: freebsd-questions@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 E3007661F41 for ; Wed, 21 Jul 2021 11:38:01 +0000 (UTC) (envelope-from list_freebsd@bluerosetech.com) Received: from echo.brtsvcs.net (echo.brtsvcs.net [IPv6:2607:f740:c::4ae]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4GVD9519rZz3l8v for ; Wed, 21 Jul 2021 11:38:00 +0000 (UTC) (envelope-from list_freebsd@bluerosetech.com) Received: from chombo.houseloki.net (65-100-43-2.dia.static.qwest.net [65.100.43.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "chombo.houseloki.net", Issuer "brtsvcs.net CA" (verified OK)) by echo.brtsvcs.net (Postfix) with ESMTPS id 9694838D8F for ; Wed, 21 Jul 2021 11:37:53 +0000 (UTC) Received: from [IPv6:2602:41:642b:630:3464:4ab2:8e27:13a8] (unknown [IPv6:2602:41:642b:630:3464:4ab2:8e27:13a8]) by chombo.houseloki.net (Postfix) with ESMTPSA id 19C141563 for ; Wed, 21 Jul 2021 04:37:49 -0700 (PDT) Subject: Re: Specifying IPv6 off-link for a subnet To: freebsd-questions@freebsd.org References: <5ea688b3-79b9-8a28-0430-5a4651207ae0@bluerosetech.com> <010afd33-d7e5-b8b5-229e-823aa007a045@bluerosetech.com> From: Mel Pilgrim Mail-Followup-To: freebsd-questions@freebsd.org Message-ID: Date: Wed, 21 Jul 2021 04:37:48 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4GVD9519rZz3l8v X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of list_freebsd@bluerosetech.com designates 2607:f740:c::4ae as permitted sender) smtp.mailfrom=list_freebsd@bluerosetech.com X-Spamd-Result: default: False [-3.19 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f740:c::4ae:from]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[2607:f740:c::4ae:from:127.0.2.255]; RCVD_COUNT_THREE(0.00)[3]; ARC_NA(0.00)[]; NEURAL_HAM_LONG(-1.00)[-0.999]; NEURAL_HAM_SHORT(-1.00)[-0.996]; DMARC_NA(0.00)[bluerosetech.com]; NEURAL_HAM_MEDIUM(-0.89)[-0.893]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:36236, ipnet:2607:f740:c::/48, country:US]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jul 2021 11:38:02 -0000 On 2021-07-20 7:20, Scott wrote: > My need is pretty simple: to have FreeBSD servers with an IPv6 stack > operating correctly on a private vLAN (IPPL). Specifically an isolated > private vLAN. > > In IPv6 (as I understand it), this should be done by specifying that the > prefix/subnet of the configured address is not on-link, and therefore should > *always* use the router as the next hop. (Similar to an NBMA network). Off-hand, I'd try configuring vmx0 with xx::yy/128 and the router's link-local for the default route. That should make the host forward everything via the router for the rest of xx::/64 without trying to do ND for it. You might do better asking on freebsd-net about this.