From owner-freebsd-net@FreeBSD.ORG Mon Aug 1 17:30:40 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 D0876106564A for ; Mon, 1 Aug 2011 17:30:40 +0000 (UTC) (envelope-from prvs=1194f7599d=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id 978018FC16 for ; Mon, 1 Aug 2011 17:30:39 +0000 (UTC) X-MDAV-Processed: mail1.multiplay.co.uk, Mon, 01 Aug 2011 18:19:55 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Mon, 01 Aug 2011 18:19:55 +0100 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 ([188.220.16.49]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50014420253.msg for ; Mon, 01 Aug 2011 18:19:55 +0100 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=1194f7599d=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-net@freebsd.org Message-ID: From: "Steven Hartland" To: Date: Mon, 1 Aug 2011 18:20:28 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6109 Subject: tcp failing to recover from a packet loss under 8.2-RELEASE? 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: Mon, 01 Aug 2011 17:30:40 -0000 We've been investiging an ongoing issue with some machines we have in Amsterdam, when receiving files via scp from our London DC. Initially we suspected a igb driver issue but after continued diagnosis including disabling hardware tso and cksums on both end we're currently investigating the possibility of a tcp stack issue. What I believe we're seeing from the tcpdump trace is the packet loss on the network results in an unrecoverable tcp session. >From my very limited knowledge of tcp, I would expect to see the session to recover after receiving the lost packet by either a fast retransmit or standard retransmit. My interpretation of the capture is the packet is indeed resent by the sender but that the receiver continues to respond with TCP Dup ACK for said missing packet instead of recovering. Trace is below, which starts from just before the point the receiver sees the dropped packet to the point where the sender gives up and resets the session. Is my analysis correct and does it look like this is a tcp stack bug? tshark -z "proto,colinfo,tcp.seq,tcp.seq" -z "proto,colinfo,tcp.nxtseq,tcp.nxtseq" -r tcp-stall.pcap 1 0.000000 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 1449 tcp.seq == 1 2 0.000028 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 2897 tcp.seq == 1449 3 0.000034 10.10.1.20 -> 10.10.1.10 TCP ssh > 28296 [ACK] Seq=49 Ack=2897 Win=9102 Len=0 TSV=1902423651 TSER=261560659 tcp.seq == 49 4 0.000051 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 4345 tcp.seq == 2897 5 0.000078 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 5793 tcp.seq == 4345 6 0.000084 10.10.1.20 -> 10.10.1.10 TCP ssh > 28296 [ACK] Seq=49 Ack=5793 Win=8921 Len=0 TSV=1902423651 TSER=261560659 tcp.seq == 49 7 0.000100 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 7241 tcp.seq == 5793 8 0.000135 10.10.1.10 -> 10.10.1.20 SSH [TCP Previous segment lost] Encrypted request packet len=1448 tcp.nxtseq == 10137 tcp.seq == 8689 9 0.000147 10.10.1.20 -> 10.10.1.10 TCP ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=10137 tcp.seq == 49 10 0.000167 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 11585 tcp.seq == 10137 11 0.000173 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#1] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=11585 tcp.seq == 49 12 0.000180 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 13033 tcp.seq == 11585 13 0.000186 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#2] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=13033 tcp.seq == 49 14 0.000191 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 14481 tcp.seq == 13033 15 0.000197 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#3] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=14481 tcp.seq == 49 16 0.000201 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 15929 tcp.seq == 14481 17 0.000209 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#4] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=15929 tcp.seq == 49 18 0.000229 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 17377 tcp.seq == 15929 19 0.000237 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#5] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=17377 tcp.seq == 49 20 0.000460 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 18825 tcp.seq == 17377 21 0.000469 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#6] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=18825 tcp.seq == 49 22 0.000505 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 20273 tcp.seq == 18825 23 0.000511 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#7] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=20273 tcp.seq == 49 24 0.000513 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 21721 tcp.seq == 20273 25 0.000519 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#8] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=21721 tcp.seq == 49 26 0.000528 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 23169 tcp.seq == 21721 27 0.000535 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#9] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 28 0.000539 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 24617 tcp.seq == 23169 29 0.000546 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#10] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 30 0.000556 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 26065 tcp.seq == 24617 31 0.000562 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 9#11] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=8830 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 32 0.000565 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 27513 tcp.seq == 26065 33 0.000572 10.10.1.20 -> 10.10.1.10 TCP [TCP Window Update] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9011 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 34 0.000579 10.10.1.20 -> 10.10.1.10 TCP [TCP Window Update] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 35 0.000596 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 28961 tcp.seq == 27513 36 0.000604 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#1] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 37 0.000621 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 30409 tcp.seq == 28961 38 0.000627 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#2] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 39 0.000650 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 31857 tcp.seq == 30409 40 0.000657 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#3] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 41 0.000672 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 33305 tcp.seq == 31857 42 0.000679 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#4] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 43 0.000799 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 34753 tcp.seq == 33305 44 0.000806 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#5] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 45 0.000857 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 36201 tcp.seq == 34753 46 0.000866 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#6] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 47 0.000939 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 37649 tcp.seq == 36201 48 0.000946 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#7] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 49 0.000955 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 39097 tcp.seq == 37649 50 0.000963 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#8] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423652 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 51 0.001256 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 40545 tcp.seq == 39097 52 0.001268 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#9] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 53 0.001300 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 41993 tcp.seq == 40545 54 0.001309 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#10] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 55 0.001352 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 43441 tcp.seq == 41993 56 0.001359 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#11] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 57 0.001431 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 44889 tcp.seq == 43441 58 0.001439 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#12] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 59 0.001468 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 46337 tcp.seq == 44889 60 0.001475 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#13] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 61 0.001492 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 47785 tcp.seq == 46337 62 0.001498 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#14] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 63 0.001569 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 49233 tcp.seq == 47785 64 0.001576 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#15] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 65 0.001879 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 50681 tcp.seq == 49233 66 0.001890 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#16] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 67 0.001925 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 52129 tcp.seq == 50681 68 0.001933 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#17] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 69 0.002006 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 53577 tcp.seq == 52129 70 0.002016 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#18] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423653 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 71 0.002218 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 55025 tcp.seq == 53577 72 0.002225 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#19] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 73 0.002281 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 56473 tcp.seq == 55025 74 0.002288 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#20] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 75 0.002343 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 57921 tcp.seq == 56473 76 0.002350 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#21] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 77 0.002525 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 59369 tcp.seq == 57921 78 0.002535 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#22] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 79 0.002580 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 60817 tcp.seq == 59369 80 0.002589 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#23] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 81 0.002772 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 62265 tcp.seq == 60817 82 0.002779 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#24] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 83 0.002826 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 63713 tcp.seq == 62265 84 0.002834 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#25] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 85 0.002889 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 65161 tcp.seq == 63713 86 0.002896 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#26] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 87 0.002967 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 66609 tcp.seq == 65161 88 0.002974 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#27] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423654 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 89 0.003411 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 68057 tcp.seq == 66609 90 0.003419 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#28] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 91 0.003457 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 69505 tcp.seq == 68057 92 0.003464 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#29] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 93 0.003557 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 70953 tcp.seq == 69505 94 0.003564 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#30] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 95 0.003644 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 72401 tcp.seq == 70953 96 0.003653 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#31] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 97 0.003675 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 73849 tcp.seq == 72401 98 0.003683 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#32] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 99 0.003728 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 75297 tcp.seq == 73849 100 0.003735 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#33] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 101 0.003780 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 76745 tcp.seq == 75297 102 0.003792 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#34] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 103 0.003829 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 78193 tcp.seq == 76745 104 0.003842 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#35] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 105 0.003874 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 79641 tcp.seq == 78193 106 0.003883 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#36] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423655 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 107 0.004165 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 81089 tcp.seq == 79641 108 0.004172 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#37] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 109 0.004279 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 82537 tcp.seq == 81089 110 0.004287 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#38] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 111 0.004340 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 83985 tcp.seq == 82537 112 0.004347 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#39] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 113 0.004400 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 85433 tcp.seq == 83985 114 0.004408 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#40] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 115 0.004887 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 86881 tcp.seq == 85433 116 0.004894 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#41] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 117 0.004940 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 88329 tcp.seq == 86881 118 0.004947 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#42] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 119 0.005006 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 89777 tcp.seq == 88329 120 0.005015 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#43] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423656 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 121 0.005140 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 91225 tcp.seq == 89777 122 0.005150 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#44] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 123 0.005194 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 92673 tcp.seq == 91225 124 0.005203 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#45] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 125 0.005263 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 94121 tcp.seq == 92673 126 0.005270 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#46] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 127 0.005413 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 95569 tcp.seq == 94121 128 0.005420 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#47] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 129 0.005480 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 97017 tcp.seq == 95569 130 0.005487 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#48] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 131 0.005504 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 98465 tcp.seq == 97017 132 0.005511 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#49] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 133 0.005528 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 99913 tcp.seq == 98465 134 0.005536 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#50] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 135 0.005553 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 101361 tcp.seq == 99913 136 0.005561 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#51] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 137 0.005576 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 102809 tcp.seq == 101361 138 0.005583 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#52] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 139 0.005627 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 104257 tcp.seq == 102809 140 0.005634 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#53] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 141 0.005689 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 105705 tcp.seq == 104257 142 0.005696 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#54] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 143 0.005704 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 107153 tcp.seq == 105705 144 0.005710 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#55] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 145 0.005716 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 108601 tcp.seq == 107153 146 0.005724 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#56] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 147 0.005727 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 110049 tcp.seq == 108601 148 0.005734 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#57] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 149 0.005739 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 111497 tcp.seq == 110049 150 0.005746 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#58] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 151 0.005756 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 112945 tcp.seq == 111497 152 0.005765 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#59] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 153 0.005768 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 114393 tcp.seq == 112945 154 0.005777 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#60] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 155 0.005781 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 115841 tcp.seq == 114393 156 0.005789 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#61] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423657 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 157 0.006154 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 117289 tcp.seq == 115841 158 0.006162 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#62] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 159 0.006200 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 118737 tcp.seq == 117289 160 0.006207 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#63] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 161 0.006229 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 120185 tcp.seq == 118737 162 0.006237 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#64] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 163 0.006253 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 121633 tcp.seq == 120185 164 0.006259 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#65] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 165 0.006278 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 123081 tcp.seq == 121633 166 0.006285 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#66] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 167 0.006294 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 124529 tcp.seq == 123081 168 0.006300 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#67] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 169 0.006304 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 125977 tcp.seq == 124529 170 0.006310 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#68] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 171 0.006315 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 127425 tcp.seq == 125977 172 0.006323 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#69] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 173 0.006333 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 128873 tcp.seq == 127425 174 0.006340 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#70] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 175 0.006342 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 130321 tcp.seq == 128873 176 0.006349 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#71] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 177 0.006358 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 131769 tcp.seq == 130321 178 0.006365 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#72] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 179 0.006368 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 133217 tcp.seq == 131769 180 0.006375 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#73] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 181 0.006388 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 134665 tcp.seq == 133217 182 0.006395 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#74] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 183 0.006435 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 136113 tcp.seq == 134665 184 0.006446 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#75] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 185 0.006506 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 137561 tcp.seq == 136113 186 0.006516 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#76] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 187 0.006558 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 139009 tcp.seq == 137561 188 0.006565 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#77] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 189 0.006568 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 140457 tcp.seq == 139009 190 0.006574 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#78] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 191 0.006579 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 141905 tcp.seq == 140457 192 0.006585 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#79] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 193 0.006596 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 143353 tcp.seq == 141905 194 0.006603 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#80] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 195 0.006606 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 144801 tcp.seq == 143353 196 0.006612 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#81] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 197 0.006654 10.10.1.10 -> 10.10.1.20 SSH Encrypted request packet len=1448 tcp.nxtseq == 146249 tcp.seq == 144801 198 0.006661 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#82] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560660 SLE=8689 SRE=23169 tcp.seq == 49 199 0.006696 10.10.1.10 -> 10.10.1.20 SSH [TCP Fast Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 200 0.006703 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#83] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423658 TSER=261560666 SLE=8689 SRE=23169 tcp.seq == 49 201 0.246652 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 202 0.246664 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#84] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902423897 TSER=261560896 SLE=8689 SRE=23169 tcp.seq == 49 203 0.518331 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 204 0.518343 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#85] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902424168 TSER=261561156 SLE=8689 SRE=23169 tcp.seq == 49 205 0.852522 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 206 0.852535 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#86] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902424501 TSER=261561476 SLE=8689 SRE=23169 tcp.seq == 49 207 1.311920 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 208 1.311933 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#87] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902424958 TSER=261561916 SLE=8689 SRE=23169 tcp.seq == 49 209 2.022170 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 210 2.022184 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#88] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902425666 TSER=261562596 SLE=8689 SRE=23169 tcp.seq == 49 211 3.233004 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 212 3.233016 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#89] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902426872 TSER=261563756 SLE=8689 SRE=23169 tcp.seq == 49 213 5.444340 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 214 5.444353 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#90] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902429074 TSER=261565876 SLE=8689 SRE=23169 tcp.seq == 49 215 9.658815 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 216 9.658826 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#91] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902433272 TSER=261569916 SLE=8689 SRE=23169 tcp.seq == 49 217 17.882735 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 218 17.882748 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#92] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902441463 TSER=261577796 SLE=8689 SRE=23169 tcp.seq == 49 219 34.113339 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 220 34.113352 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#93] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902457629 TSER=261593356 SLE=8689 SRE=23169 tcp.seq == 49 221 50.343593 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 222 50.343607 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#94] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902473795 TSER=261608916 SLE=8689 SRE=23169 tcp.seq == 49 223 66.567449 10.10.1.10 -> 10.10.1.20 SSH [TCP Retransmission] Encrypted request packet len=1448 tcp.nxtseq == 8689 tcp.seq == 7241 224 66.567461 10.10.1.20 -> 10.10.1.10 TCP [TCP Dup ACK 34#95] ssh > 28296 [ACK] Seq=49 Ack=7241 Win=9283 Len=0 TSV=1902489954 TSER=261624476 SLE=8689 SRE=23169 tcp.seq == 49 225 82.793601 10.10.1.10 -> 10.10.1.20 TCP 28296 > ssh [RST, ACK] Seq=146249 Ack=49 Win=4163 Len=0 TSV=261640036 TSER=1902489954 tcp.seq == 146249 Just to confirm both machines involved are running 8.2-RELEASE with both hardware checksums and offloading disabled using -tso -rxcsum -txcsum. The sender is using em and the receiver using igb. Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.