From owner-freebsd-stable Wed Jan 29 1:40:11 2003 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3F1FF37B401 for ; Wed, 29 Jan 2003 01:40:03 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id ACEC143F79 for ; Wed, 29 Jan 2003 01:40:00 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1]) by cirb503493.alcatel.com.au (8.12.5/8.12.5) with ESMTP id h0T9dxLZ027822 for ; Wed, 29 Jan 2003 20:39:59 +1100 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.6/8.12.5/Submit) id h0T9dwhx027821 for freebsd-stable@freebsd.org; Wed, 29 Jan 2003 20:39:58 +1100 (EST) Date: Wed, 29 Jan 2003 20:39:58 +1100 From: Peter Jeremy To: freebsd-stable@freebsd.org Subject: TCP oddities in -STABLE Message-ID: <20030129093958.GG88010@cirb503493.alcatel.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4i Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I've been seeing occasional unexpected pauses in output across my home LAN eg 'sh -x some_script' will pause for a second at apparently random intervals. Looking at tcpdump output shows a couple of oddities that I'm hoping someone can explain. Background: The client is an old Pentium laptop running 4.6 from mid-July, using a 3Com Etherlink III 3C589 NIC (10baseT). The server is an Athlon XP running -stable from last Sunday, using a RealTek 8139 NIC (100baseTX FD). They are connected using a cheap-and-very-nasty switch. 'netstat -m' on the client shows no problems and there are no kernel messages suggesting a resource problem. The following tcpdump primarily shows packets (and timing) on the client (laptop), I've pruned the options information and cut the timestamp down to seconds to try and minimise the size of this e-mail. I've also merged in transmitted packets that never arrived (refer to previous comments on the switch I'm using) - these have a blank timestamp. Full dumps available on request. My questions are: 1) Why doesn't the laptop write any ack packets back to the server between 11.238341 and 11.243160, or between 11.244625 and 11.261048? The ack packets do get transmitted but much later than I would expect. Is this a funny in the ep(4) driver? 2) Is it reasonable for the server to continue sending so many packets in the absence of any acks? (On reflection, I presume this is ssh disabling Nagle - the packets have tos 0x10). 3) The dump includes a packet 12880:12960(80) at 11.242797 but the ack's include a large number of repeat acks for this packet (11.278380 through 11.280344), implying this packet never arrived. Since it did get to bpf, why didn't the TCP stack see it? (The same thing seems to have happened to 15856:15904(48) at 11.249113). 4) Shouldn't the RTT calculations have triggered faster re-transmits between 11.286337 and 13.684779? Either with the client realizing it needs to quickly double-ack 17488 to force a re-transmit, or the server working out that if it got the ack 17488 within 1msec of re-sending 15856:17304(1448) [this time comes from the server trace, it can't be seen below] then it can trust that this ack represents missing data. 5) The pattern of non-received packets suggests that something is over-running a network queue. Is it possible that the rl driver is over-running the hardware? The switch claims 'total 128KB RAM per device' for an 8-port switch. Even if I assume this means 'fixed 8KB ingress and egress FIFO per port', there doesn't seem to be enough queued data (and the 802.3x flow control should have cut in). Can anyone suggest how to track this down and eradicate it? 09.520536 laptop.4357 > server.ssh: S 400775150:400775150(0) win 57344 09.520834 server.ssh > laptop.4357: S 1252883695:1252883695(0) ack 400775151 win 57344 09.521062 laptop.4357 > server.ssh: . ack 1 win 57920 [deleted] 11.238341 server.ssh > laptop.4357: P 10080:10160(80) ack 2456 win 57920 11.238423 server.ssh > laptop.4357: P 10160:10208(48) ack 2456 win 57920 11.238502 server.ssh > laptop.4357: P 10208:10256(48) ack 2456 win 57920 11.238580 server.ssh > laptop.4357: P 10256:10304(48) ack 2456 win 57920 11.238680 server.ssh > laptop.4357: P 10304:10384(80) ack 2456 win 57920 11.238759 server.ssh > laptop.4357: P 10384:10432(48) ack 2456 win 57920 11.238838 server.ssh > laptop.4357: P 10432:10480(48) ack 2456 win 57920 11.238921 server.ssh > laptop.4357: P 10480:10528(48) ack 2456 win 57920 11.239024 server.ssh > laptop.4357: P 10528:10608(80) ack 2456 win 57920 11.239107 server.ssh > laptop.4357: P 10608:10656(48) ack 2456 win 57920 11.239187 server.ssh > laptop.4357: P 10656:10704(48) ack 2456 win 57920 11.239267 server.ssh > laptop.4357: P 10704:10752(48) ack 2456 win 57920 11.239350 server.ssh > laptop.4357: P 10752:10800(48) ack 2456 win 57920 11.239430 server.ssh > laptop.4357: P 10800:10848(48) ack 2456 win 57920 11.239510 server.ssh > laptop.4357: P 10848:10896(48) ack 2456 win 57920 11.239613 server.ssh > laptop.4357: P 10896:10976(80) ack 2456 win 57920 11.239696 server.ssh > laptop.4357: P 10976:11024(48) ack 2456 win 57920 11.239784 server.ssh > laptop.4357: P 11024:11072(48) ack 2456 win 57920 11.239869 server.ssh > laptop.4357: P 11072:11120(48) ack 2456 win 57920 11.239982 server.ssh > laptop.4357: P 11120:11216(96) ack 2456 win 57920 11.240068 server.ssh > laptop.4357: P 11216:11264(48) ack 2456 win 57920 11.240152 server.ssh > laptop.4357: P 11264:11312(48) ack 2456 win 57920 11.240238 server.ssh > laptop.4357: P 11312:11360(48) ack 2456 win 57920 11.240350 server.ssh > laptop.4357: P 11360:11456(96) ack 2456 win 57920 11.240435 server.ssh > laptop.4357: P 11456:11504(48) ack 2456 win 57920 11.240520 server.ssh > laptop.4357: P 11504:11552(48) ack 2456 win 57920 11.240605 server.ssh > laptop.4357: P 11552:11600(48) ack 2456 win 57920 11.240718 server.ssh > laptop.4357: P 11600:11696(96) ack 2456 win 57920 11.240804 server.ssh > laptop.4357: P 11696:11744(48) ack 2456 win 57920 11.240890 server.ssh > laptop.4357: P 11744:11792(48) ack 2456 win 57920 11.240976 server.ssh > laptop.4357: P 11792:11840(48) ack 2456 win 57920 11.241101 server.ssh > laptop.4357: P 11840:11920(80) ack 2456 win 57920 11.241186 server.ssh > laptop.4357: P 11920:11968(48) ack 2456 win 57920 11.241272 server.ssh > laptop.4357: P 11968:12016(48) ack 2456 win 57920 11.241358 server.ssh > laptop.4357: P 12016:12064(48) ack 2456 win 57920 11.241442 server.ssh > laptop.4357: P 12064:12112(48) ack 2456 win 57920 11.241528 server.ssh > laptop.4357: P 12112:12160(48) ack 2456 win 57920 11.241614 server.ssh > laptop.4357: P 12160:12208(48) ack 2456 win 57920 11.241719 server.ssh > laptop.4357: P 12208:12288(80) ack 2456 win 57920 11.241803 server.ssh > laptop.4357: P 12288:12336(48) ack 2456 win 57920 11.241889 server.ssh > laptop.4357: P 12336:12384(48) ack 2456 win 57920 11.241974 server.ssh > laptop.4357: P 12384:12432(48) ack 2456 win 57920 11.242078 server.ssh > laptop.4357: P 12432:12512(80) ack 2456 win 57920 11.242164 server.ssh > laptop.4357: P 12512:12560(48) ack 2456 win 57920 11.242248 server.ssh > laptop.4357: P 12560:12608(48) ack 2456 win 57920 11.242334 server.ssh > laptop.4357: P 12608:12656(48) ack 2456 win 57920 11.242439 server.ssh > laptop.4357: P 12656:12736(80) ack 2456 win 57920 11.242524 server.ssh > laptop.4357: P 12736:12784(48) ack 2456 win 57920 11.242608 server.ssh > laptop.4357: P 12784:12832(48) ack 2456 win 57920 11.242693 server.ssh > laptop.4357: P 12832:12880(48) ack 2456 win 57920 11.242797 server.ssh > laptop.4357: P 12880:12960(80) ack 2456 win 57920 11.242879 server.ssh > laptop.4357: P 12960:13008(48) ack 2456 win 57920 11.242958 server.ssh > laptop.4357: P 13008:13056(48) ack 2456 win 57920 11.243037 server.ssh > laptop.4357: P 13056:13104(48) ack 2456 win 57920 11.243160 laptop.4357 > server.ssh: . ack 10160 win 52960 11.243263 laptop.4357 > server.ssh: . ack 10256 win 52864 11.243362 laptop.4357 > server.ssh: . ack 10384 win 52736 11.243464 laptop.4357 > server.ssh: . ack 10480 win 52640 11.244625 server.ssh > laptop.4357: P 13104:13184(80) ack 2456 win 57920 11.244710 server.ssh > laptop.4357: P 13184:13232(48) ack 2456 win 57920 11.244791 server.ssh > laptop.4357: P 13232:13280(48) ack 2456 win 57920 11.244876 server.ssh > laptop.4357: P 13280:13328(48) ack 2456 win 57920 11.244957 server.ssh > laptop.4357: P 13328:13376(48) ack 2456 win 57920 11.245037 server.ssh > laptop.4357: P 13376:13424(48) ack 2456 win 57920 11.245120 server.ssh > laptop.4357: P 13424:13472(48) ack 2456 win 57920 11.245223 server.ssh > laptop.4357: P 13472:13552(80) ack 2456 win 57920 11.245308 server.ssh > laptop.4357: P 13552:13600(48) ack 2456 win 57920 11.245393 server.ssh > laptop.4357: P 13600:13648(48) ack 2456 win 57920 11.245478 server.ssh > laptop.4357: P 13648:13696(48) ack 2456 win 57920 11.245582 server.ssh > laptop.4357: P 13696:13776(80) ack 2456 win 57920 11.245667 server.ssh > laptop.4357: P 13776:13824(48) ack 2456 win 57920 11.245752 server.ssh > laptop.4357: P 13824:13872(48) ack 2456 win 57920 11.245839 server.ssh > laptop.4357: P 13872:13920(48) ack 2456 win 57920 11.245943 server.ssh > laptop.4357: P 13920:14000(80) ack 2456 win 57920 11.246028 server.ssh > laptop.4357: P 14000:14048(48) ack 2456 win 57920 11.246114 server.ssh > laptop.4357: P 14048:14096(48) ack 2456 win 57920 11.246198 server.ssh > laptop.4357: P 14096:14144(48) ack 2456 win 57920 11.246304 server.ssh > laptop.4357: P 14144:14224(80) ack 2456 win 57920 11.246389 server.ssh > laptop.4357: P 14224:14272(48) ack 2456 win 57920 11.246475 server.ssh > laptop.4357: P 14272:14320(48) ack 2456 win 57920 11.246561 server.ssh > laptop.4357: P 14320:14368(48) ack 2456 win 57920 11.246665 server.ssh > laptop.4357: P 14368:14448(80) ack 2456 win 57920 11.246751 server.ssh > laptop.4357: P 14448:14496(48) ack 2456 win 57920 11.246836 server.ssh > laptop.4357: P 14496:14544(48) ack 2456 win 57920 11.246922 server.ssh > laptop.4357: P 14544:14592(48) ack 2456 win 57920 11.247031 server.ssh > laptop.4357: P 14592:14640(48) ack 2456 win 57920 11.247119 server.ssh > laptop.4357: P 14640:14688(48) ack 2456 win 57920 11.247205 server.ssh > laptop.4357: P 14688:14736(48) ack 2456 win 57920 11.247310 server.ssh > laptop.4357: P 14736:14816(80) ack 2456 win 57920 11.247395 server.ssh > laptop.4357: P 14816:14864(48) ack 2456 win 57920 11.247481 server.ssh > laptop.4357: P 14864:14912(48) ack 2456 win 57920 11.247567 server.ssh > laptop.4357: P 14912:14960(48) ack 2456 win 57920 11.247671 server.ssh > laptop.4357: P 14960:15040(80) ack 2456 win 57920 11.247756 server.ssh > laptop.4357: P 15040:15088(48) ack 2456 win 57920 11.247842 server.ssh > laptop.4357: P 15088:15136(48) ack 2456 win 57920 11.247926 server.ssh > laptop.4357: P 15136:15184(48) ack 2456 win 57920 11.248030 server.ssh > laptop.4357: P 15184:15264(80) ack 2456 win 57920 11.248116 server.ssh > laptop.4357: P 15264:15312(48) ack 2456 win 57920 11.248201 server.ssh > laptop.4357: P 15312:15360(48) ack 2456 win 57920 11.248287 server.ssh > laptop.4357: P 15360:15408(48) ack 2456 win 57920 11.248391 server.ssh > laptop.4357: P 15408:15488(80) ack 2456 win 57920 11.248476 server.ssh > laptop.4357: P 15488:15536(48) ack 2456 win 57920 11.248562 server.ssh > laptop.4357: P 15536:15584(48) ack 2456 win 57920 11.248646 server.ssh > laptop.4357: P 15584:15632(48) ack 2456 win 57920 11.248750 server.ssh > laptop.4357: P 15632:15712(80) ack 2456 win 57920 11.248836 server.ssh > laptop.4357: P 15712:15760(48) ack 2456 win 57920 11.248942 server.ssh > laptop.4357: P 15760:15808(48) ack 2456 win 57920 11.249028 server.ssh > laptop.4357: P 15808:15856(48) ack 2456 win 57920 11.249113 server.ssh > laptop.4357: P 15856:15904(48) ack 2456 win 57920 11.249194 server.ssh > laptop.4357: P 15904:15952(48) ack 2456 win 57920 11.249274 server.ssh > laptop.4357: P 15952:16000(48) ack 2456 win 57920 11.249371 server.ssh > laptop.4357: P 16000:16080(80) ack 2456 win 57920 11.249450 server.ssh > laptop.4357: P 16080:16128(48) ack 2456 win 57920 11.249530 server.ssh > laptop.4357: P 16128:16176(48) ack 2456 win 57920 11.251209 server.ssh > laptop.4357: P 16176:16224(48) ack 2456 win 57920 11.251316 server.ssh > laptop.4357: P 16224:16304(80) ack 2456 win 57920 11.251402 server.ssh > laptop.4357: P 16304:16352(48) ack 2456 win 57920 11.251487 server.ssh > laptop.4357: P 16352:16400(48) ack 2456 win 57920 11.251574 server.ssh > laptop.4357: P 16400:16448(48) ack 2456 win 57920 11.251678 server.ssh > laptop.4357: P 16448:16528(80) ack 2456 win 57920 11.251765 server.ssh > laptop.4357: P 16528:16576(48) ack 2456 win 57920 11.251850 server.ssh > laptop.4357: P 16576:16624(48) ack 2456 win 57920 11.251935 server.ssh > laptop.4357: P 16624:16672(48) ack 2456 win 57920 11.252038 server.ssh > laptop.4357: P 16672:16752(80) ack 2456 win 57920 11.252123 server.ssh > laptop.4357: P 16752:16800(48) ack 2456 win 57920 11.252209 server.ssh > laptop.4357: P 16800:16848(48) ack 2456 win 57920 11.252294 server.ssh > laptop.4357: P 16848:16896(48) ack 2456 win 57920 11.252399 server.ssh > laptop.4357: P 16896:16976(80) ack 2456 win 57920 11.252484 server.ssh > laptop.4357: P 16976:17024(48) ack 2456 win 57920 11.252569 server.ssh > laptop.4357: P 17024:17072(48) ack 2456 win 57920 11.252656 server.ssh > laptop.4357: P 17072:17120(48) ack 2456 win 57920 11.252741 server.ssh > laptop.4357: P 17120:17168(48) ack 2456 win 57920 11.252827 server.ssh > laptop.4357: P 17168:17216(48) ack 2456 win 57920 11.252911 server.ssh > laptop.4357: P 17216:17264(48) ack 2456 win 57920 11.253015 server.ssh > laptop.4357: P 17264:17344(80) ack 2456 win 57920 11.253102 server.ssh > laptop.4357: P 17344:17392(48) ack 2456 win 57920 11.253186 server.ssh > laptop.4357: P 17392:17440(48) ack 2456 win 57920 11.253272 server.ssh > laptop.4357: P 17440:17488(48) ack 2456 win 57920 server.ssh > laptop.4357: P 17488:17568(80) ack 2456 win 57920 11.253357 server.ssh > laptop.4357: P 17568:17616(48) ack 2456 win 57920 11.253443 server.ssh > laptop.4357: P 17616:17664(48) ack 2456 win 57920 11.253530 server.ssh > laptop.4357: P 17664:17712(48) ack 2456 win 57920 server.ssh > laptop.4357: P 17712:17792(80) ack 2456 win 57920 11.253615 server.ssh > laptop.4357: P 17792:17840(48) ack 2456 win 57920 11.253700 server.ssh > laptop.4357: P 17840:17888(48) ack 2456 win 57920 server.ssh > laptop.4357: P 17888:17936(48) ack 2456 win 57920 11.253803 server.ssh > laptop.4357: P 17936:18016(80) ack 2456 win 57920 server.ssh > laptop.4357: P 18016:18064(48) ack 2456 win 57920 11.253888 server.ssh > laptop.4357: P 18064:18112(48) ack 2456 win 57920 11.253974 server.ssh > laptop.4357: P 18112:18160(48) ack 2456 win 57920 server.ssh > laptop.4357: P 18160:18240(80) ack 2456 win 57920 11.254060 server.ssh > laptop.4357: P 18240:18288(48) ack 2456 win 57920 server.ssh > laptop.4357: P 18288:18336(48) ack 2456 win 57920 11.254146 server.ssh > laptop.4357: P 18336:18384(48) ack 2456 win 57920 11.254231 server.ssh > laptop.4357: P 18384:18432(48) ack 2456 win 57920 11.254317 server.ssh > laptop.4357: P 18432:18480(48) ack 2456 win 57920 11.254401 server.ssh > laptop.4357: P 18480:18528(48) ack 2456 win 57920 server.ssh > laptop.4357: P 18528:18608(80) ack 2456 win 57920 11.254488 server.ssh > laptop.4357: P 18608:18656(48) ack 2456 win 57920 11.254572 server.ssh > laptop.4357: P 18656:18704(48) ack 2456 win 57920 11.254658 server.ssh > laptop.4357: P 18704:18752(48) ack 2456 win 57920 server.ssh > laptop.4357: P 18752:18832(80) ack 2456 win 57920 11.254744 server.ssh > laptop.4357: P 18832:18880(48) ack 2456 win 57920 11.254829 server.ssh > laptop.4357: P 18880:18928(48) ack 2456 win 57920 11.254913 server.ssh > laptop.4357: P 18928:18976(48) ack 2456 win 57920 server.ssh > laptop.4357: P 18976:19056(80) ack 2456 win 57920 11.254998 server.ssh > laptop.4357: P 19056:19104(48) ack 2456 win 57920 11.255084 server.ssh > laptop.4357: P 19104:19152(48) ack 2456 win 57920 11.255177 server.ssh > laptop.4357: P 19152:19200(48) ack 2456 win 57920 server.ssh > laptop.4357: P 19200:19280(80) ack 2456 win 57920 11.255262 server.ssh > laptop.4357: P 19280:19328(48) ack 2456 win 57920 11.255348 server.ssh > laptop.4357: P 19328:19376(48) ack 2456 win 57920 server.ssh > laptop.4357: P 19376:19424(48) ack 2456 win 57920 server.ssh > laptop.4357: P 19424:19504(80) ack 2456 win 57920 11.255434 server.ssh > laptop.4357: P 19504:19552(48) ack 2456 win 57920 11.255519 server.ssh > laptop.4357: P 19552:19600(48) ack 2456 win 57920 11.255606 server.ssh > laptop.4357: P 19600:19648(48) ack 2456 win 57920 11.255687 server.ssh > laptop.4357: P 19648:19696(48) ack 2456 win 57920 11.255767 server.ssh > laptop.4357: P 19696:19744(48) ack 2456 win 57920 11.255846 server.ssh > laptop.4357: P 19744:19792(48) ack 2456 win 57920 server.ssh > laptop.4357: P 19792:19872(80) ack 2456 win 57920 11.255925 server.ssh > laptop.4357: P 19872:19920(48) ack 2456 win 57920 11.256005 server.ssh > laptop.4357: P 19920:19968(48) ack 2456 win 57920 server.ssh > laptop.4357: P 19968:20016(48) ack 2456 win 57920 11.256103 server.ssh > laptop.4357: P 20016:20096(80) ack 2456 win 57920 server.ssh > laptop.4357: P 20096:20144(48) ack 2456 win 57920 11.256181 server.ssh > laptop.4357: P 20144:20192(48) ack 2456 win 57920 server.ssh > laptop.4357: P 20192:20240(48) ack 2456 win 57920 server.ssh > laptop.4357: P 20240:20320(80) ack 2456 win 57920 11.256261 server.ssh > laptop.4357: P 20320:20368(48) ack 2456 win 57920 11.260188 server.ssh > laptop.4357: P 20368:21712(1344) ack 2456 win 57920 11.260953 server.ssh > laptop.4357: P 21712:22912(1200) ack 2456 win 57920 11.261048 server.ssh > laptop.4357: P 22912:22976(64) ack 2456 win 57920 11.276885 laptop.4357 > server.ssh: . ack 10608 win 52512 11.276969 laptop.4357 > server.ssh: . ack 10704 win 52416 11.277019 laptop.4357 > server.ssh: . ack 10800 win 52320 11.277070 laptop.4357 > server.ssh: . ack 10896 win 52224 11.277134 laptop.4357 > server.ssh: . ack 11024 win 52096 11.277219 laptop.4357 > server.ssh: . ack 11120 win 52000 11.277271 laptop.4357 > server.ssh: . ack 11264 win 51856 11.277371 laptop.4357 > server.ssh: . ack 11360 win 51760 11.277422 laptop.4357 > server.ssh: . ack 11504 win 51616 11.277517 laptop.4357 > server.ssh: . ack 11600 win 51520 11.277567 laptop.4357 > server.ssh: . ack 11744 win 51376 11.277654 laptop.4357 > server.ssh: . ack 11840 win 51280 11.277717 laptop.4357 > server.ssh: . ack 11968 win 51152 11.277799 laptop.4357 > server.ssh: . ack 12064 win 51056 11.277862 laptop.4357 > server.ssh: . ack 12160 win 50960 11.277944 laptop.4357 > server.ssh: . ack 12288 win 50832 11.278007 laptop.4357 > server.ssh: . ack 12384 win 50736 11.278096 laptop.4357 > server.ssh: . ack 12512 win 50608 11.278147 laptop.4357 > server.ssh: . ack 12608 win 50512 11.278244 laptop.4357 > server.ssh: . ack 12736 win 50384 11.278295 laptop.4357 > server.ssh: . ack 12832 win 50288 11.278380 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278444 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278526 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278589 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278671 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278735 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278818 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278878 laptop.4357 > server.ssh: . ack 12880 win 50240 11.278962 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279026 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279108 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279171 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279253 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279316 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279404 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279454 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279597 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279649 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279699 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279750 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279834 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279898 laptop.4357 > server.ssh: . ack 12880 win 50240 11.279980 laptop.4357 > server.ssh: . ack 12880 win 50240 11.280041 laptop.4357 > server.ssh: . ack 12880 win 50240 11.280126 laptop.4357 > server.ssh: . ack 12880 win 50240 11.280197 laptop.4357 > server.ssh: . ack 12880 win 50240 11.280261 laptop.4357 > server.ssh: . ack 12880 win 50240 11.280344 laptop.4357 > server.ssh: . ack 12880 win 50240 11.283107 server.ssh > laptop.4357: . 12880:14328(1448) ack 2456 win 57920 11.283529 laptop.4357 > server.ssh: . ack 15856 win 54944 11.283872 laptop.4357 > server.ssh: . ack 15856 win 57920 11.286098 server.ssh > laptop.4357: . 15856:17304(1448) ack 2456 win 57920 11.286337 laptop.4357 > server.ssh: . ack 17488 win 56288 12.247106 laptop.4357 > server.ssh: . ack 17488 win 57920 12.484824 server.ssh > laptop.4357: . 17488:18936(1448) ack 2456 win 57920 12.485107 laptop.4357 > server.ssh: . ack 18976 win 56432 13.684779 server.ssh > laptop.4357: . 18976:20424(1448) ack 2456 win 57920 13.685086 laptop.4357 > server.ssh: . ack 22976 win 53920 13.685439 laptop.4357 > server.ssh: . ack 22976 win 57920 13.702095 laptop.4357 > server.ssh: P 2456:2504(48) ack 22976 win 57920 13.702625 server.ssh > laptop.4357: P 22976:23072(96) ack 2504 win 57920 13.716726 laptop.4357 > server.ssh: P 2504:2696(192) ack 23072 win 57920 13.717478 server.ssh > laptop.4357: P 23072:23184(112) ack 2696 win 57920 [deleted] Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message