From owner-freebsd-net@freebsd.org Fri Dec 16 00:24:20 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8577BC81E17 for ; Fri, 16 Dec 2016 00:24:20 +0000 (UTC) (envelope-from anderson.ferreira@gmx.com) Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mout.gmx.net", Issuer "TeleSec ServerPass DE-2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DE5DD1293 for ; Fri, 16 Dec 2016 00:24:19 +0000 (UTC) (envelope-from anderson.ferreira@gmx.com) Received: from mac-mini.asfnet.org ([191.34.199.244]) by mail.gmx.com (mrgmx002 [212.227.17.184]) with ESMTPSA (Nemesis) id 0LeMij-1cyOaU23a9-00q9tZ for ; Fri, 16 Dec 2016 01:24:12 +0100 From: Anderson Soares Ferreira Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.1 \(3251\)) Subject: Trouble with ipv6 routing through interface Message-Id: <780FE1FC-EA67-4593-BC0A-259F4B8E7FB5@gmx.com> Date: Thu, 15 Dec 2016 22:24:08 -0200 To: freebsd-net@freebsd.org X-Mailer: Apple Mail (2.3251) X-Provags-ID: V03:K0:30lpPMq3uzQKYmOB2m9EY9SKjTe/O0o2QR/df6/cWDFQ/y/K/v1 O9OypyyP64m4x5syZw2yKYFFepyCTBNEHmXXyxGQr7fQyIDQ4VuhzV6ow0zCyf+0THiT0XE LCaQyKhRFabkKfK1pl8AfzkwaiQdHbA8o79fGDPW38HuqB/xu9X06qQENx6KRqKi206IAEb TKe1Cqc7dupXSR9xFUX8A== X-UI-Out-Filterresults: notjunk:1;V01:K0:jKcOGBVcXu4=:mOIwWTGUQmLpb4mO3OAg6H xXMgAScyhyGWJKPfGfxWXO+dohI9xoSMS6POMhGNJ5AZH4DkVbfZoQQIE5wXMVpRoU/F53Rx5 f04mrxZ1ckTRmMyXvnuCGsgszVIB2Jzg+H4xe+BrJ+FJXfe+IST1SsMpbnskAKzRIMVEGpoQb Q7GiTMQQZuBnse44YSdQGHwBOba+FqipUdYJZE9zO1RFeYZeI+nPVdUzz82O0sTE+1hvs620f w1IAiymY/PNojjc3KQl4DbG6dzlsPfyJjmMl59rWeLurDPQLok90u0Q7NHk+IP7nfZTd8PsHb me6JKbyD/B9rKluH+Js3AREKVPky90bRDWU4gNVf6+yf0Okx8q7jcq5PF4Z/Ot3hzyfwMR3Jo TIlJsVrvDydEpEsvMYaMM0RtE5TxliGz17exRKrdLFSPBqZ4cUAQ0aSgMPUqSVRrWsOzJEM1F 8eCNbHMIt0ToGJ0HmZsiKbAgndz+YdAAKUbKenEoTZpAQoy8yPMLZbPPAFbPjomYUmT5vnwi9 dDLYKyIsObkthpJhrxsR6ZOHUXBaWegS4LWa8sY5kQqd7f35eo/juCv/ZjcHU7yoGU+YUrI4O q6sA/f7m0oSFJU0HKTjldqCYjCnWzpw3qFHl6UumQzgRltVauM4mC/iH2XQFkgPkXdlcmpXSI 38NMPh5Mv3FtEPXwLWfcMwql9xWu475ZY+iWWBFH1asPpIBUbpGtJPoNSQ6ossDoiakI9pLpC CqfADj8SbnKm/v6SWXqehOMWBnOK4PT3ULLvdHCO4kFTDsj6/tuCCg2weAHrPjeRXXCAgIwH9 sC+7FDg X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 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, 16 Dec 2016 00:24:20 -0000 Hello, I have a freebsd 11 box running as my network gateway and I=E2=80=99m = having some trouble trying to route ipv6 packets through an interface = with only linklocal address. In short, what I=E2=80=99m doing is: My freebsd gateway has one global scope address on lo0 interface, each = other interface has only a link local address fe80::1. Static routes for = the global scope subnets have been created, Each route was created using = the command: # route -6 add -net /64 -interface =20 The clients on each subnet have a global scope address and fe80::1 as = default gateway. What is happening with this approach is that my gateway can=E2=80=99t = reach the clients on the subnets. Ping tests from the gateway to the = client return the error "ping6: sendmsg: No buffer space available=E2=80=9D= . On the other hand, when I try to do a ping from client to gateway, the = packets from the client are received by the gateway but no response is = sent. In my tests using a linux gateway with the same approach, = everything worked fine . Is there something wrong with my setup? How can I get that approach = working using freebsd ? Thanks in advanced, Anderson=20