From owner-freebsd-stable@freebsd.org Sun Aug 6 05:12:05 2017 Return-Path: Delivered-To: freebsd-stable@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 15C0BDBE304 for ; Sun, 6 Aug 2017 05:12:05 +0000 (UTC) (envelope-from gcr+freebsd-stable@tharned.org) Received: from roadkill.tharned.org (gcrivers-1-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:107f::2]) (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 AA95071FE8 for ; Sun, 6 Aug 2017 05:12:04 +0000 (UTC) (envelope-from gcr+freebsd-stable@tharned.org) Received: from flake.tharned.org ([IPv6:2001:470:1f11:107f:2435:171d:82f4:26a7]) (authenticated bits=0) by roadkill.tharned.org (8.15.2/8.15.2) with ESMTPSA id v765C0M3068594 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 6 Aug 2017 00:12:05 -0500 (CDT) (envelope-from gcr+freebsd-stable@tharned.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tharned.org; s=2016; t=1501996326; bh=cEI4iVl1hnzVkkxiFp3bPcnNUAD3KbF5Ms6RjeTIrkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QaDnml0uQZlmG7jmOhrMMAKkMg+SgDPLUGXHEGbxWYcTuOy1Ln08WWC+eOQmkdmwb gz0Iol8KOCGR0UvajbTCzjPQryYffff37FJ5wRImCF35nvwk367kc3Ob1OqkUjuvWk a1SmfWjdBQ8smsX9yEdm68/91PgDYGijuBwTHhfnB4SxE1mNWhemMbFlrmd2siUJnI N84LohgpnfSLVZPRu0PFoM+IAcCAmW2mAKTbpcnUSsK+ufkv75UAOYI9R1lBdWRlfi 1LZ+84F8O/YVvn8LtQ28De3bCkOslXZVJsCakEIuf6UDSoF5AC+Twa5NlOoQXFLKUh CXVqzIBjSLtiw== X-Authentication-Warning: roadkill.tharned.org: Host [IPv6:2001:470:1f11:107f:2435:171d:82f4:26a7] claimed to be flake.tharned.org From: Greg Rivers To: Ultima Cc: freebsd-stable@freebsd.org Subject: Re: SLAAC not working Date: Sun, 06 Aug 2017 00:11:57 -0500 Message-ID: <13414011.RNdQKF0511@flake.tharned.org> User-Agent: KMail/4.14.10 (FreeBSD/11.1-RELEASE; KDE/4.14.30; amd64; ; ) In-Reply-To: References: <1646645.UkMcyRZBVl@flake.tharned.org> <1512869.XSHPEJXeo8@flake.tharned.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.6.2 (roadkill.tharned.org [IPv6:2001:470:1f10:107f:0:0:0:2]); Sun, 06 Aug 2017 00:12:06 -0500 (CDT) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Aug 2017 05:12:05 -0000 On Saturday, August 05, 2017 21:37:35 Ultima wrote: > Never tested SLAAC on lagg, but your configuration looks correct to me. One > flag that I notice that looks questionable is the MTU option being 9216 > while the lagg interface is set to 1500. I doubt this would cause SLAAC to > fail but it maybe worth investigating. > I had noticed that too. I'll ask the networking guys why the RA has that MTU option. As you say, I it's probably not the cause: the Linux hosts have have the same hardware and an analogous configuration using the bonding driver. The Linux bond interfaces also have MTU 1500, yet they SLAAC fine: bond0 Link encap:Ethernet HWaddr D0:BF:9C:F1:C9:E8 inet addr:xxx.xxx.212.13 Bcast:xxx.xxx.212.127 Mask:255.255.255.128 inet6 addr: 26xx:xxxx:4013:4:d2bf:9cff:fef1:c9e8/64 Scope:Global inet6 addr: fe80::d2bf:9cff:fef1:c9e8/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:139503168 errors:0 dropped:0 overruns:0 frame:0 TX packets:166569190 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:17165085983 (15.9 GiB) TX bytes:90980707420 (84.7 GiB) It may not be lagg related. As I recall, a few months ago I tried bringing one of the hosts up on oce0 alone, and SLAAC failed then too. I wonder if it's an oce(4) problem? -- Greg Rivers