Problem z 2.6.7-3

Wto, 10 Sie 2004, 16:10:48 CEST

W liście z wto, 10-08-2004, godz. 13:04 +0200, Arkadiusz Miskiewicz
napisał(a):
> On Tuesday 10 of August 2004 12:31, Krzysztof Królikowski wrote:
> > Witam.
> >
> > Na serwerze pocztowym mam zainstalowany w/w kernel. Dostałem zgłoszenie
> > od użytkownika, że poczta którą wysyła nie może być dostarczona.
> > Analizując problem stwierdziłem, że telnetując się na port 25, pomino
> > oczekiwania nie dostaję odpowiedzi 220 od serwera obsługującego pocztę
> > odbiorcy. Problem nie występuje na maszynach z innym kernelem. Na swojej
> > stacji roboczej (2.6.7-3) problem się powtarza.
> Mam to samo ale nie wiem czego to wina. tcpdump pokazuje, że nie nadchodzą 
> odpowiedzi z serwera w ogóle. Ktoś parsujący nieźle tcpdumpa output + znający 
> protokół tcp tu obecny?
> 
Poniżej test z kernela 2.6.7-3, kolejny jest z 2.4.20.

# tcpdump -vvvvv -n src or dst 194.181.127.62
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
16:03:02.109238 IP (tos 0x0, ttl  64, id 15739, offset 0, flags [DF], length: 57) 83.16.76.74.4786 > 194.181.127.62.25: FP [tcp sum ok] 3134455581:3134455586(5) ack 1236733015 win 45 <nop,nop,timestamp 1659892854 183722699>
16:03:02.660862 IP (tos 0x0, ttl  64, id 47707, offset 0, flags [DF], length: 60) 83.16.76.74.4787 > 194.181.127.62.25: S [tcp sum ok] 3153218758:3153218758(0) win 5840 <mss 1460,sackOK,timestamp 1659893405 0,nop,wscale 7>
16:03:02.674799 IP (tos 0x0, ttl  54, id 23543, offset 0, flags [DF], length: 60) 194.181.127.62.25 > 83.16.76.74.4787: S [tcp sum ok] 1793049592:1793049592(0) ack 3153218759 win 57344 <mss 1380,nop,wscale 0,nop,nop,timestamp 183724033 1659893405>
16:03:02.674925 IP (tos 0x0, ttl  64, id 47708, offset 0, flags [DF], length: 52) 83.16.76.74.4787 > 194.181.127.62.25: . [tcp sum ok] 1:1(0) ack 1 win 45 <nop,nop,timestamp 1659893419 183724033>
16:03:02.697935 IP (tos 0x0, ttl  54, id 23548, offset 0, flags [DF], length: 60) 194.181.127.62.1202 > 83.16.76.74.113: S [tcp sum ok] 3098240425:3098240425(0) win 57344 <mss 1380,nop,wscale 0,nop,nop,timestamp 183724035 0>
16:03:02.698067 IP (tos 0x0, ttl  64, id 0, offset 0, flags [DF], length: 60) 83.16.76.74.113 > 194.181.127.62.1202: S [tcp sum ok] 3139847691:3139847691(0) ack 3098240426 win 5792 <mss 1460,nop,nop,timestamp 1659893442 183724035,nop,wscale 7>
16:03:02.712984 IP (tos 0x0, ttl  54, id 23549, offset 0, flags [DF], length: 52) 194.181.127.62.1202 > 83.16.76.74.113: . [tcp sum ok] 1:1(0) ack 1 win 57456 <nop,nop,timestamp 183724036 1659893442>
16:03:02.713436 IP (tos 0x0, ttl  54, id 23550, offset 0, flags [DF], length: 61) 194.181.127.62.1202 > 83.16.76.74.113: P [tcp sum ok] 1:10(9) ack 1 win 57456 <nop,nop,timestamp 183724036 1659893442>
16:03:02.713478 IP (tos 0x0, ttl  64, id 45277, offset 0, flags [DF], length: 52) 83.16.76.74.113 > 194.181.127.62.1202: . [tcp sum ok] 1:1(0) ack 10 win 45 <nop,nop,timestamp 1659893458 183724036>
16:03:02.727930 IP (tos 0x0, ttl  64, id 45278, offset 0, flags [DF], length: 88) 83.16.76.74.113 > 194.181.127.62.1202: P 1:37(36) ack 10 win 45 <nop,nop,timestamp 1659893472 183724036>
16:03:02.729841 IP (tos 0x0, ttl  64, id 45279, offset 0, flags [DF], length: 52) 83.16.76.74.113 > 194.181.127.62.1202: F [tcp sum ok] 37:37(0) ack 10 win 45 <nop,nop,timestamp 1659893474 183724036>
16:03:02.743760 IP (tos 0x0, ttl  54, id 23554, offset 0, flags [DF], length: 52) 194.181.127.62.1202 > 83.16.76.74.113: F [tcp sum ok] 10:10(0) ack 37 win 57456 <nop,nop,timestamp 183724039 1659893472>
16:03:02.743844 IP (tos 0x0, ttl  64, id 45280, offset 0, flags [DF], length: 52) 83.16.76.74.113 > 194.181.127.62.1202: . [tcp sum ok] 38:38(0) ack 11 win 45 <nop,nop,timestamp 1659893488 183724039>
16:03:02.747446 IP (tos 0x0, ttl  54, id 23556, offset 0, flags [DF], length: 52) 194.181.127.62.1202 > 83.16.76.74.113: F [tcp sum ok] 10:10(0) ack 38 win 57456 <nop,nop,timestamp 183724040 1659893474>
                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Przed tym powinna być odpowiedź z portu 25

16:03:06.028645 IP (tos 0x0, ttl  64, id 15740, offset 0, flags [DF], length: 57) 83.16.76.74.4786 > 194.181.127.62.25: FP [tcp sum ok] 0:5(5) ack 1 win 45 <nop,nop,timestamp 1659896774 183722699>
16:03:13.457497 IP (tos 0x0, ttl  64, id 53393, offset 0, flags [DF], length: 52) 83.16.76.74.4783 > 194.181.127.62.25: F [tcp sum ok] 3077506955:3077506955(0) ack 41014737 win 45 <nop,nop,timestamp 1659904204 183716672>
16:03:13.867451 IP (tos 0x0, ttl  64, id 15741, offset 0, flags [DF], length: 57) 83.16.76.74.4786 > 194.181.127.62.25: FP [tcp sum ok] 0:5(5) ack 1 win 45 <nop,nop,timestamp 1659904614 183722699>
16:03:29.545075 IP (tos 0x0, ttl  64, id 15742, offset 0, flags [DF], length: 57) 83.16.76.74.4786 > 194.181.127.62.25: FP [tcp sum ok] 0:5(5) ack 1 win 45 <nop,nop,timestamp 1659920294 183722699>
16:03:40.973326 IP (tos 0x0, ttl  64, id 53394, offset 0, flags [DF], length: 52) 83.16.76.74.4783 > 194.181.127.62.25: F [tcp sum ok] 0:0(0) ack 1 win 45 <nop,nop,timestamp 1659931724 183716672>
16:04:00.900300 IP (tos 0x0, ttl  64, id 15743, offset 0, flags [DF], length: 57) 83.16.76.74.4786 > 194.181.127.62.25: FP [tcp sum ok] 0:5(5) ack 1 win 45 <nop,nop,timestamp 1659951654 183722699>
I tak się dobija...

Tu 2.4.20:
16:05:25.582950 IP (tos 0x0, ttl  63, id 27581, offset 0, flags [DF], length: 60) 83.16.76.76.4772 > 194.181.127.62.25: S [tcp sum ok] 227741380:227741380(0) win 5840 <mss 1460,sackOK,timestamp 519293444 0,nop,wscale 0>
16:05:25.597551 IP (tos 0x0, ttl  54, id 38139, offset 0, flags [DF], length: 60) 194.181.127.62.25 > 83.16.76.76.4772: S [tcp sum ok] 4066583308:4066583308(0) ack 227741381 win 57344 <mss 1380,nop,wscale 0,nop,nop,timestamp 183738323 519293444>
16:05:25.597792 IP (tos 0x0, ttl  63, id 28133, offset 0, flags [DF], length: 52) 83.16.76.76.4772 > 194.181.127.62.25: . [tcp sum ok] 1:1(0) ack 1 win 5840 <nop,nop,timestamp 519293446 183738323>
16:05:25.618985 IP (tos 0x0, ttl  54, id 38144, offset 0, flags [DF], length: 60) 194.181.127.62.1813 > 83.16.76.76.113: S [tcp sum ok] 2188921125:2188921125(0) win 57344 <mss 1380,nop,wscale 0,nop,nop,timestamp 183738325 0>
16:05:25.619237 IP (tos 0x0, ttl  63, id 12184, offset 0, flags [DF], length: 60) 83.16.76.76.113 > 194.181.127.62.1813: S [tcp sum ok] 234246237:234246237(0) ack 2188921126 win 5792 <mss 1460,nop,nop,timestamp 519293448 183738325,nop,wscale 0>
16:05:25.633033 IP (tos 0x0, ttl  54, id 38145, offset 0, flags [DF], length: 52) 194.181.127.62.1813 > 83.16.76.76.113: . [tcp sum ok] 1:1(0) ack 1 win 57456 <nop,nop,timestamp 183738326 519293448>
16:05:25.633258 IP (tos 0x0, ttl  54, id 38146, offset 0, flags [DF], length: 61) 194.181.127.62.1813 > 83.16.76.76.113: P [tcp sum ok] 1:10(9) ack 1 win 57456 <nop,nop,timestamp 183738326 519293448>
16:05:25.633410 IP (tos 0x0, ttl  63, id 30535, offset 0, flags [DF], length: 52) 83.16.76.76.113 > 194.181.127.62.1813: . [tcp sum ok] 1:1(0) ack 10 win 5792 <nop,nop,timestamp 519293449 183738326>
16:05:25.673617 IP (tos 0x0, ttl  63, id 12953, offset 0, flags [DF], length: 88) 83.16.76.76.113 > 194.181.127.62.1813: P 1:37(36) ack 10 win 5792 <nop,nop,timestamp 519293453 183738326>
16:05:25.674376 IP (tos 0x0, ttl  63, id 18805, offset 0, flags [DF], length: 52) 83.16.76.76.113 > 194.181.127.62.1813: F [tcp sum ok] 37:37(0) ack 10 win 5792 <nop,nop,timestamp 519293453 183738326>
16:05:25.689710 IP (tos 0x0, ttl  54, id 38149, offset 0, flags [DF], length: 52) 194.181.127.62.1813 > 83.16.76.76.113: F [tcp sum ok] 10:10(0) ack 37 win 57456 <nop,nop,timestamp 183738332 519293453>
16:05:25.689922 IP (tos 0x0, ttl  63, id 16979, offset 0, flags [DF], length: 52) 83.16.76.76.113 > 194.181.127.62.1813: . [tcp sum ok] 38:38(0) ack 11 win 5792 <nop,nop,timestamp 519293455 183738332>
16:05:25.695877 IP (tos 0x0, ttl  54, id 38150, offset 0, flags [DF], length: 141) 194.181.127.62.25 > 83.16.76.76.4772: P 1:90(89) ack 1 win 57456 <nop,nop,timestamp 183738332 519293446>
16:05:25.696066 IP (tos 0x0, ttl  63, id 56, offset 0, flags [DF], length: 52) 83.16.76.76.4772 > 194.181.127.62.25: . [tcp sum ok] 1:1(0) ack 90 win 5840 <nop,nop,timestamp 519293456 183738332>
16:05:25.696102 IP (tos 0x0, ttl  54, id 38151, offset 0, flags [DF], length: 52) 194.181.127.62.1813 > 83.16.76.76.113: F [tcp sum ok] 10:10(0) ack 38 win 57456 <nop,nop,timestamp 183738332 519293453>