From owner-freebsd-bugs@FreeBSD.ORG Tue Mar 31 23:39:58 2015 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C9BE1F9C for ; Tue, 31 Mar 2015 23:39:58 +0000 (UTC) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (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 95CFCAB8 for ; Tue, 31 Mar 2015 23:39:58 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id t2VNdwEw078136 for ; Tue, 31 Mar 2015 23:39:58 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199078] IPv6 on a bridge only works if an attached interface has had a v6 address Date: Tue, 31 Mar 2015 23:39:58 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: n+freebsd@nirf.de X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Mar 2015 23:39:58 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199078 Bug ID: 199078 Summary: IPv6 on a bridge only works if an attached interface has had a v6 address Product: Base System Version: 10.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: n+freebsd@nirf.de Created attachment 155070 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=155070&action=edit ifconfig and rc.conf I've got a bridge (bridge0) with one interface (re0) attached. bridge0 has a v6 address. Apparently (according to tcpdump) incoming IPv6 packets reach re0 but not bridge0, except when they are coming from a link local address. Outgoing v6 packets successfully pass to their destination. Example of ping6 google.com: tcpdump -i bridge0 -n not tcp 01:28:02.114762 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 0, length 16 01:28:03.124809 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 1, length 16 01:28:04.144537 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 2, length 16 tcpdump -i re0 -n not tcp 01:29:02.200106 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 0, length 16 01:29:02.205795 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 0, length 16 01:29:03.224609 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 1, length 16 01:29:03.230286 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 1, length 16 01:29:04.222578 IP6 2a01:4f8:123:4567::2 > 2a00:1450:4001:803::100e: ICMP6, echo request, seq 2, length 16 01:29:04.228249 IP6 2a00:1450:4001:803::100e > 2a01:4f8:123:4567::2: ICMP6, echo reply, seq 2, length 16 Pinging to fe80::1%bridge0 works as intended. However, the problem can be fixed by adding any v6 address out of the same subnet to re0: ifconfig re0 inet6 2a01:4f8:123:4567::42 # ipv6 now works ifconfig re0 inet6 2a01:4f8:123:4567::42 delete # ipv6 still works -- You are receiving this mail because: You are the assignee for the bug.