From owner-freebsd-stable@FreeBSD.ORG Wed Sep 19 13:55:00 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8C1761065670 for ; Wed, 19 Sep 2012 13:55:00 +0000 (UTC) (envelope-from xaque208@gmail.com) Received: from mail-vc0-f182.google.com (mail-vc0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id 410F48FC15 for ; Wed, 19 Sep 2012 13:55:00 +0000 (UTC) Received: by vcbfw7 with SMTP id fw7so1496486vcb.13 for ; Wed, 19 Sep 2012 06:54:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=8muP6ZRVFgBjISa9c6kLCU3uftjpnsscuM+AX/ks/zo=; b=AoVw+sp9p9NDa+OCAYC/O2ZIiHjmzU0m+CSyAchG5kdg90YC/qDbHkjJK5zT/U/G8x NtXXZFbZQZvsqeg0Da00LUtsdieuMN0kaJ6t1lVEXQbFtwbOvHH2iS2WNq7L7G9xk5bA 9vHIyuLnBXsOhAovsqJYHWO7pIJEglqCcUTBD0DpgKCRpxJApjKY8WnvZPOwzTDAH0hJ yYPTdxLQ1lm1oEb9zn9ERlBhmYFEo1y3GxWvOy5J0tj3EiAwIZFB2NpO1N2NP0X0Sqxs yydJNNEHb0M0pHQ5p2UWNaN5req8fQiIBHrQgcSIkpR5xFpvpzyjfXN04J68N1oMxO6o XkMw== MIME-Version: 1.0 Received: by 10.220.155.3 with SMTP id q3mr1982083vcw.11.1348062899689; Wed, 19 Sep 2012 06:54:59 -0700 (PDT) Received: by 10.220.190.131 with HTTP; Wed, 19 Sep 2012 06:54:59 -0700 (PDT) Date: Wed, 19 Sep 2012 06:54:59 -0700 Message-ID: From: Zach Leslie To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Strange IPv6 in FreeBSD 9.1RC1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Sep 2012 13:55:00 -0000 HI Folks, I've got two boxes that I recently moved from -stable to 9.1rc1. I did them one at a time, with about a week between the upgrades. After the first upgrade, I noticed something strange with networking but didn't really dig into it much. After the second upgrade immediately experiencing the same issues, I figured it seemed to be something related to 9.1rc1. What I am finding is that packets that originate from the FreeBSD boxes do not get returned when running IPv6. V4 seems to be fine. I can also shell into the boxes without issue, which is strange, since I would figure if there were network issues, then I would see it for both in and out. So box sends a syn outbound, ack is never returned. I can see on the destination boxes interface that the return packet is never actually generated. Running tcpdump -nei pflog0 doesn't show any blocked return packets, so I think the packets are just not getting generated. I don't really understand how this could be honestly. I first thought it was an issue with a Linux box, since its running a service that both boxes are trying to talk to, but I don't think this is the case. I see the same behavior when I try to shell from one FreeBSD box to the other. I was encouraged to send a note to the list, even though I have very little concrete. Is anyone else seeing any strange IPv6 related networking issues on 9.1RC1? -- Zach