From owner-freebsd-net@FreeBSD.ORG Sat Apr 30 09:03:00 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DE4BF106566C for ; Sat, 30 Apr 2011 09:03:00 +0000 (UTC) (envelope-from Michael.Tuexen@lurchi.franken.de) Received: from mail-n.franken.de (drew.ipv6.franken.de [IPv6:2001:638:a02:a001:20e:cff:fe4a:feaa]) by mx1.freebsd.org (Postfix) with ESMTP id 488A28FC08 for ; Sat, 30 Apr 2011 09:03:00 +0000 (UTC) Received: from [192.168.1.192] (p508FBA66.dip.t-dialin.net [80.143.186.102]) (Authenticated sender: macmic) by mail-n.franken.de (Postfix) with ESMTP id 023061C0C0BE9; Sat, 30 Apr 2011 11:02:57 +0200 (CEST) Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: =?iso-8859-1?Q?Michael_T=FCxen?= In-Reply-To: <20110430091148.31393q3py4j4bg38@webmail.tuwien.ac.at> Date: Sat, 30 Apr 2011 11:02:55 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20110430091148.31393q3py4j4bg38@webmail.tuwien.ac.at> To: Schoch Christian X-Mailer: Apple Mail (2.1084) Cc: freebsd-net@freebsd.org Subject: Re: [SCTP] ICMP unreachable message reenables data transmit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Apr 2011 09:03:00 -0000 On Apr 30, 2011, at 9:11 AM, Schoch Christian wrote: > During a measurement with CMT-SCTP and PF i figured out, that = sometimes a ICMP Destination unreachable message triggers a message = transmission on an inactive data path that has been primary before. >=20 > It looks as the ICMP message is reseting the inactive state back to = active without reseting RTO. >=20 > This behavior is triggered by a returning heartbeat message when no = ICMP unreachable by data is sent quite before. >=20 > Test system are two multi-homed hosts with FreeBSD8.1 and a WANem host = between. >=20 > A wireshark log can be provided on demand (quite large). Hi Christian, any chance to upgrade the FreeBSD machines to head or to use newer SCTP sources, which I could provide? It would require a recompilation of the kernel... Are you using IPv4 or IPv6? Best regards Michael >=20 > Regards, > Schoch Christian > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >=20