Date: Fri, 7 Mar 1997 18:44:01 +0100 (CET) From: Stefan Esser <se@zpr.uni-koeln.de> To: hackers@freebsd.org Subject: TCP/IP problem to one particular FreeBSD machine ... Message-ID: <199703071744.SAA02637@x14.mi.uni-koeln.de>
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I've been wondering about this for quite some time: The main German *.de.freebsd.org server machine is well connected to my network, but I can't access it from my FreeBSD-current system ... In the past, I often FTPed files to some other machine, and then to my system in a second step, for that reason. Now I tried to use CVSUP (after the splatter disk failure, I'm normally receiving CTM updates ...) and found, that I can't get a connection, again :( With FTP, I see that the remote end is reached, but the connection seems to freeze before the login is complete. CVSUP seems to fail with a time-out after about one minute. I append the tcpdump log of an attempted CVSUP run. My end is "x14" (a PPP line to an ANNEX terminal server), and the CVSUP.DE.FreeBSD.Org system (Blues.Physik.RWTH-Aachen.De) is listet as "cvsup". Any ideas what is going on ? 17:07:13.072353 x14.1124 > cvsup.5999: S 3549284397:3549284397(0) win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 0,nop,nop,timestamp 37093 0,eol,[|tcp]> (DF) (ttl 64, id 53603) 17:07:13.250384 cvsup.5999 > x14.1124: S 2202693665:2202693665(0) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329189 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63211) 17:07:13.250732 x14.1124 > cvsup.5999: . ack 1 win 17280 <nop,nop,timestamp 37094 329189,nop,nop,cc 178> (DF) (ttl 64, id 53604) 17:07:15.890336 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329194 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63212) 17:07:15.893312 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37099 329194,nop,nop,cc 178> (DF) (ttl 64, id 53605) 17:07:18.591055 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37104 329194,nop,nop,cc 178> (DF) (ttl 64, id 53606) 17:07:21.790402 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329206 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63216) 17:07:21.791032 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37111 329206,nop,nop,cc 178> (DF) (ttl 64, id 53607) 17:07:27.591033 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37122 329206,nop,nop,cc 178> (DF) (ttl 64, id 53608) 17:07:33.790428 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329230 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63299) 17:07:33.791120 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37135 329230,nop,nop,cc 178> (DF) (ttl 64, id 53609) 17:07:45.591174 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37158 329230,nop,nop,cc 178> (DF) (ttl 64, id 53702) 17:07:57.890373 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329278 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63312) 17:07:57.890973 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37183 329278,nop,nop,cc 178> (DF) (ttl 64, id 53989) 17:08:21.591060 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37230 329278,nop,nop,cc 178> (DF) (ttl 64, id 54188) 17:08:45.860412 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329374 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63335) 17:08:45.861037 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37279 329374,nop,nop,cc 178> (DF) (ttl 64, id 54219) 17:09:33.591102 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37374 329374,nop,nop,cc 178> (DF) (ttl 64, id 54220) 17:09:49.760367 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329502 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63359) 17:09:49.761042 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37407 329502,nop,nop,cc 178> (DF) (ttl 64, id 54221) 17:10:53.591097 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37534 329502,nop,nop,cc 178> (DF) (ttl 64, id 54789) 17:10:53.770331 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329630 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63382) 17:10:53.770958 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37535 329630,nop,nop,cc 178> (DF) (ttl 64, id 54790) 17:11:57.591067 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37662 329630,nop,nop,cc 178> (DF) (ttl 64, id 54822) 17:11:57.750329 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329758 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63403) 17:11:57.750947 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37663 329758,nop,nop,cc 178> (DF) (ttl 64, id 54823) 17:13:01.591115 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37790 329758,nop,nop,cc 178> (DF) (ttl 64, id 55380) 17:13:01.710492 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 329886 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63513) 17:13:01.711154 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37791 329886,nop,nop,cc 178> (DF) (ttl 64, id 55381) 17:14:00.555980 x14 > cvsup: icmp: echo request (ttl 255, id 55544) 17:14:00.740354 cvsup > x14: icmp: echo reply (ttl 248, id 63531) 17:14:01.560250 x14 > cvsup: icmp: echo request (ttl 255, id 55545) 17:14:01.850393 cvsup > x14: icmp: echo reply (ttl 248, id 63535) 17:14:02.570242 x14 > cvsup: icmp: echo request (ttl 255, id 55546) 17:14:02.750275 cvsup > x14: icmp: echo reply (ttl 248, id 63536) 17:14:03.580572 x14 > cvsup: icmp: echo request (ttl 255, id 55547) 17:14:03.740325 cvsup > x14: icmp: echo reply (ttl 248, id 63537) 17:14:04.590427 x14 > cvsup: icmp: echo request (ttl 255, id 55548) 17:14:04.740325 cvsup > x14: icmp: echo reply (ttl 248, id 63538) 17:14:05.591030 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37918 329886,nop,nop,cc 178> (DF) (ttl 64, id 55554) 17:14:05.770340 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 330014 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63539) 17:14:05.770901 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 37919 330014,nop,nop,cc 178> (DF) (ttl 64, id 55561) 17:15:09.591098 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 38046 330014,nop,nop,cc 178> (DF) (ttl 64, id 56081) 17:15:09.820394 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 330142 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63562) 17:15:09.821046 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 38047 330142,nop,nop,cc 178> (DF) (ttl 64, id 56082) 17:16:13.591098 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 38174 330142,nop,nop,cc 178> (DF) (ttl 64, id 56111) 17:16:13.680350 cvsup.5999 > x14.1124: SP 2202693665:2202693692(27) ack 3549284398 win 17280 <mss 1460,nop,wscale 0,nop,nop,timestamp 330270 37093,nop,nop,cc[|tcp]> (DF) (ttl 57, id 63586) 17:16:13.680979 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 38175 330270,nop,nop,cc 178> (DF) (ttl 64, id 56112) 17:17:17.591087 x14.1124 > cvsup.5999: P 1:12(11) ack 28 win 17280 <nop,nop,timestamp 38302 330270,nop,nop,cc 178> (DF) (ttl 64, id 56618) 17:17:17.650301 cvsup.5999 > x14.1124: R 28:28(0) ack 1 win 17280 (DF) (ttl 57, id 63610) Thanks in advance, Stefan
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