From owner-freebsd-stable@FreeBSD.ORG Mon Feb 15 09:55:49 2010 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 AA0C1106566C for ; Mon, 15 Feb 2010 09:55:49 +0000 (UTC) (envelope-from nino80@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.153]) by mx1.freebsd.org (Postfix) with ESMTP id 43BDB8FC0A for ; Mon, 15 Feb 2010 09:55:49 +0000 (UTC) Received: by fg-out-1718.google.com with SMTP id 16so370612fgg.13 for ; Mon, 15 Feb 2010 01:55:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:from:date:message-id :subject:to:content-type; bh=XCvdgkd21iW+iuf6mVXZqhhnkNJPgfCVarjTfJ0YgFs=; b=R4tj+ytybVVpcJ2tSJoMKHs/K479w4fLZSp7XF2l11vy3eNVPbg8d6/PhbyIITuDVR 5aaknNXe6QiKPKR8Nj0FWZ4oAqaMEIpwu8u1HR8fgC8ODo5npxCqXTPck0Rdk6BFbE7n MM/upH7ibqp3nVxNi4mtN8l+ZadXAvDmpbtwU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=XbicEKMeRO5pkBS661UlK0o95zDX+D242PlwM7vuYQ9qD2XZWRO7GFI+VxO+Zv1RaF cTiQ2qAFx8qIxJJqHwEMl4Tf0pB3Qg6tECE+wITln0kpwYdr7KavXB+k/YJcNkktxrO1 k9rV0Br6I/uiAa9NnAFsQBGpm1ZaJhl3aLX2U= MIME-Version: 1.0 Received: by 10.102.16.13 with SMTP id 13mr3660433mup.62.1266226251210; Mon, 15 Feb 2010 01:30:51 -0800 (PST) From: n j Date: Mon, 15 Feb 2010 10:30:31 +0100 Message-ID: <92bcbda51002150130i3a1baa4eha06b8ce4f90de486@mail.gmail.com> To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: ACK and RST packets sent after successfully terminating TCP connection 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: Mon, 15 Feb 2010 09:55:49 -0000 Hi all, I'm reposting this from the freebsd-questions hoping for some answers. I feel there is something wrong here, but would really appreciate a second opinion before opening a bug report. The problematic part is marked with [what is this?]. - in case of successful connection: [begin handshake] 14:52:57.866040 IP client.example.net.6524 > server.example.net.9002: S 813851098:813851098(0) win 8192 14:52:57.866057 IP server.example.net.9002 > client.example.net.6524: S 3888621507:3888621507(0) ack 813851099 win 65535 14:52:57.867143 IP client.example.net.6524 > server.example.net.9002: . ack 3888621508 win 16560 [end handshake & begin data] 14:52:57.868333 IP client.example.net.6524 > server.example.net.9002: P 813851099:813852180(1081) ack 3888621508 win 16560 14:52:57.967858 IP server.example.net.9002 > client.example.net.6524: . ack 813852180 win 8144 14:53:35.533165 IP server.example.net.9002 > client.example.net.6524: P 3888621508:3888621542(34) ack 813852180 win 8144 [end data & begin teardown] 14:53:35.564542 IP server.example.net.9002 > client.example.net.6524: FP 3888621542:3888621675(133) ack 813852180 win 8280 14:53:35.566228 IP client.example.net.6524 > server.example.net.9002: . ack 3888621676 win 16518 14:53:35.566289 IP client.example.net.6524 > server.example.net.9002: F 813852180:813852180(0) ack 3888621676 win 16518 14:53:35.566318 IP server.example.net.9002 > client.example.net.6524: . ack 813852181 win 8279 [end teardown] [what is this?] 14:53:36.172081 IP server.example.net.9002 > client.example.net.6524: . ack 813852180 win 0 14:53:36.172101 IP server.example.net.9002 > client.example.net.6524: . ack 813852181 win 8279 - in case of unsuccessful connection: [begin handshake] 14:53:00.411337 IP client.example.net.6547 > server.example.net.9002: S 1055031875:1055031875(0) win 8192 14:53:00.411354 IP server.example.net.9002 > client.example.net.6547: S 2849043653:2849043653(0) ack 1055031876 win 65535 14:53:00.412242 IP client.example.net.6547 > server.example.net.9002: . ack 2849043654 win 16560 [end handshake & reset connection] 14:53:00.412251 IP server.example.net.9002 > client.example.net.6547: R 2849043654:2849043654(0) win 0 [what is this?] 14:53:01.168076 IP server.example.net.9002 > client.example.net.6547: . ack 1055031876 win 0 14:53:01.168100 IP server.example.net.9002 > client.example.net.6547: R 2849043654:2849043654(0) win 0 14:53:01.168393 IP client.example.net.6547 > server.example.net.9002: R 1055031876:1055031876(0) ack 2849043653 win 0 The server is running 7.2 GENERIC. Thanks, -- Nino