I wrote:
> anyone seen any similar behaviour? if not, is there any tcpdumping et
> al i can do of connections to borken vs non-borken hosts that someone
> can analyse to help work out why.

avalon suggested I posted a tcpdump; here it is.
	24.192.22.163 is my cable address
	24.192.1.18 is the isp's ftp server
this was a simple `ftp m3:/foo/bar/somefile'.

i let it `run' (crawl actually) for about 20 seconds before nuking the
tcpdump.

any help?

root@daedalus:~ 3# tcpdump -vn -i we1 host m3
tcpdump: listening on we1
20:29:57.785888 24.192.22.163.65471 > 24.192.1.18.21: S 3497194998:3497194998(0) win 16384 <mss 1460,nop,wscale 0,nop,nop,timestamp[|tcp]> (ttl 64, id 17516)
20:29:57.799402 24.192.1.18.21 > 24.192.22.163.65471: S [tcp sum ok] 1150784890:1150784890(0) ack 3497194999 win 32768 <mss 1460> (DF) (ttl 62, id 36026)
20:29:57.799960 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 1 win 17520 (ttl 64, id 17517)
20:29:57.846017 24.192.1.18.21 > 24.192.22.163.65471: P 1:57(56) ack 1 win 32768 (DF) (ttl 62, id 36030)
20:29:57.850145 24.192.22.163.65471 > 24.192.1.18.21: P 1:17(16) ack 57 win 17520 [tos 0x10] (ttl 64, id 17518)
20:29:57.884524 24.192.1.18.21 > 24.192.22.163.65471: . [tcp sum ok] ack 17 win 32768 (DF) (ttl 62, id 36031)
20:29:58.111159 24.192.1.18.21 > 24.192.22.163.65471: P 57:102(45) ack 17 win 32768 (DF) (ttl 62, id 36038)
20:29:58.113638 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 17:30(13) ack 102 win 17520 [tos 0x10] (ttl 64, id 17519)
20:29:58.137626 24.192.1.18.21 > 24.192.22.163.65471: P 102:150(48) ack 30 win 32768 (DF) (ttl 62, id 36051)
20:29:58.140250 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 30:36(6) ack 150 win 17520 [tos 0x10] (ttl 64, id 17520)
20:29:58.726114 24.192.1.18.21 > 24.192.22.163.65471: P 102:150(48) ack 30 win 32768 (DF) (ttl 62, id 36078)
20:29:58.726637 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 150 win 17520 [tos 0x10] (ttl 64, id 17521)
20:29:58.818976 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 30:36(6) ack 150 win 17520 [tos 0x10] (ttl 64, id 17522)
20:29:58.825437 24.192.1.18.21 > 24.192.22.163.65471: P 150:169(19) ack 36 win 32768 (DF) (ttl 62, id 36082)
20:29:58.828325 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 36:44(8) ack 169 win 17520 [tos 0x10] (ttl 64, id 17523)
20:30:00.724833 24.192.1.18.21 > 24.192.22.163.65471: P 150:169(19) ack 36 win 32768 (DF) (ttl 62, id 36181)
20:30:00.725497 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 169 win 17520 [tos 0x10] (ttl 64, id 17524)
20:30:00.819045 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 36:44(8) ack 169 win 17520 [tos 0x10] (ttl 64, id 17525)
20:30:00.830721 24.192.1.18.21 > 24.192.22.163.65471: P 169:189(20) ack 44 win 32768 (DF) (ttl 62, id 36190)
20:30:00.832196 24.192.22.163.65471 > 24.192.1.18.21: P 44:60(16) ack 189 win 17520 [tos 0x10] (ttl 64, id 17526)
20:30:00.837153 24.192.1.18.21 > 24.192.22.163.65471: P 189:218(29) ack 60 win 32768 (DF) (ttl 62, id 36191)
20:30:00.840274 24.192.22.163.65471 > 24.192.1.18.21: P 60:78(18) ack 218 win 17520 [tos 0x10] (ttl 64, id 17527)
20:30:00.851977 24.192.1.18.21 > 24.192.22.163.65471: P [tcp sum ok] 218:232(14) ack 78 win 32768 (DF) (ttl 62, id 36192)
20:30:00.853458 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 78:84(6) ack 232 win 17520 [tos 0x10] (ttl 64, id 17528)
20:30:01.725507 24.192.1.18.21 > 24.192.22.163.65471: P [tcp sum ok] 218:232(14) ack 78 win 32768 (DF) (ttl 62, id 36271)
20:30:01.725909 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 232 win 17520 [tos 0x10] (ttl 64, id 17535)
20:30:01.819058 24.192.22.163.65471 > 24.192.1.18.21: P [tcp sum ok] 78:84(6) ack 232 win 17520 [tos 0x10] (ttl 64, id 17538)
20:30:01.831977 24.192.1.18.21 > 24.192.22.163.65471: P 232:278(46) ack 84 win 32768 (DF) (ttl 62, id 36278)
20:30:01.834068 24.192.22.163.65470 > 24.192.1.18.4872: S 3664906231:3664906231(0) win 16384 <mss 1460,nop,wscale 0,nop,nop,timestamp[|tcp]> (ttl 64, id 17539)
20:30:01.842004 24.192.1.18.4872 > 24.192.22.163.65470: S [tcp sum ok] 1151232056:1151232056(0) ack 3664906232 win 32768 <mss 1460> (DF) (ttl 62, id 36279)
20:30:01.842530 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 1 win 17520 (ttl 64, id 17540)
20:30:01.843271 24.192.22.163.65471 > 24.192.1.18.21: P 84:102(18) ack 278 win 17520 [tos 0x10] (ttl 64, id 17541)
20:30:01.850419 24.192.1.18.21 > 24.192.22.163.65471: P 278:353(75) ack 102 win 32768 (DF) (ttl 62, id 36280)
20:30:01.856235 24.192.1.18.4872 > 24.192.22.163.65470: . 1:1461(1460) ack 1 win 32768 (DF) (ttl 62, id 36281)
20:30:01.857353 24.192.1.18.4872 > 24.192.22.163.65470: . 1461:2921(1460) ack 1 win 32768 (DF) (ttl 62, id 36282)
20:30:01.857990 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 2921 win 14600 [tos 0x8] (ttl 64, id 17542)
20:30:01.868024 24.192.1.18.4872 > 24.192.22.163.65470: . 2921:4381(1460) ack 1 win 32768 (DF) (ttl 62, id 36284)
20:30:01.869256 24.192.1.18.4872 > 24.192.22.163.65470: . 4381:5841(1460) ack 1 win 32768 (DF) (ttl 62, id 36285)
20:30:01.870255 24.192.1.18.4872 > 24.192.22.163.65470: . 5841:7301(1460) ack 1 win 32768 (DF) (ttl 62, id 36286)
20:30:01.870626 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 5841 win 11680 [tos 0x8] (ttl 64, id 17543)
20:30:01.874192 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 7301 win 17520 [tos 0x8] (ttl 64, id 17544)
20:30:01.918785 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 353 win 17520 [tos 0x10] (ttl 64, id 17545)
20:30:02.728398 24.192.1.18.4872 > 24.192.22.163.65470: . 2921:4381(1460) ack 1 win 32768 (DF) (ttl 62, id 36357)
20:30:02.728576 24.192.1.18.21 > 24.192.22.163.65471: P 278:353(75) ack 102 win 32768 (DF) (ttl 62, id 36358)
20:30:02.729084 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 7301 win 17520 [tos 0x8] (ttl 64, id 17550)
20:30:02.729556 24.192.22.163.65471 > 24.192.1.18.21: . [tcp sum ok] ack 353 win 17520 [tos 0x10] (ttl 64, id 17551)
20:30:02.740613 24.192.1.18.4872 > 24.192.22.163.65470: . 7301:8761(1460) ack 1 win 32768 (DF) (ttl 62, id 36359)
20:30:02.741619 24.192.1.18.4872 > 24.192.22.163.65470: . 8761:10221(1460) ack 1 win 32768 (DF) (ttl 62, id 36360)
20:30:02.742103 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 10221 win 14600 [tos 0x8] (ttl 64, id 17552)
20:30:02.742638 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 10221 win 17520 [tos 0x8] (ttl 64, id 17553)
20:30:04.768437 24.192.1.18.4872 > 24.192.22.163.65470: . 7301:8761(1460) ack 1 win 32768 (DF) (ttl 62, id 36520)
20:30:04.768930 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 10221 win 17520 [tos 0x8] (ttl 64, id 17566)
20:30:04.777799 24.192.1.18.4872 > 24.192.22.163.65470: . 10221:11681(1460) ack 1 win 32768 (DF) (ttl 62, id 36521)
20:30:04.778845 24.192.1.18.4872 > 24.192.22.163.65470: . 11681:13141(1460) ack 1 win 32768 (DF) (ttl 62, id 36522)
20:30:04.779305 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 13141 win 14600 [tos 0x8] (ttl 64, id 17567)
20:30:04.779918 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 13141 win 17520 [tos 0x8] (ttl 64, id 17568)
20:30:06.768540 24.192.1.18.4872 > 24.192.22.163.65470: . 10221:11681(1460) ack 1 win 32768 (DF) (ttl 62, id 36768)
20:30:06.769104 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 13141 win 17520 [tos 0x8] (ttl 64, id 17572)
20:30:06.785588 24.192.1.18.4872 > 24.192.22.163.65470: . 13141:14601(1460) ack 1 win 32768 (DF) (ttl 62, id 36770)
20:30:06.786582 24.192.1.18.4872 > 24.192.22.163.65470: . 14601:16061(1460) ack 1 win 32768 (DF) (ttl 62, id 36771)
20:30:06.787053 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 16061 win 14600 [tos 0x8] (ttl 64, id 17573)
20:30:06.787572 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 16061 win 17520 [tos 0x8] (ttl 64, id 17574)
20:30:08.810018 24.192.1.18.4872 > 24.192.22.163.65470: . 13141:14601(1460) ack 1 win 32768 (DF) (ttl 62, id 36928)
20:30:08.810576 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 16061 win 17520 [tos 0x8] (ttl 64, id 17576)
20:30:08.830723 24.192.1.18.4872 > 24.192.22.163.65470: . 16061:17521(1460) ack 1 win 32768 (DF) (ttl 62, id 36933)
20:30:08.831725 24.192.1.18.4872 > 24.192.22.163.65470: . 17521:18981(1460) ack 1 win 32768 (DF) (ttl 62, id 36934)
20:30:08.832194 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 18981 win 14600 [tos 0x8] (ttl 64, id 17577)
20:30:08.832718 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 18981 win 17520 [tos 0x8] (ttl 64, id 17578)
20:30:10.808593 24.192.1.18.4872 > 24.192.22.163.65470: . 16061:17521(1460) ack 1 win 32768 (DF) (ttl 62, id 37046)
20:30:10.809175 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 18981 win 17520 [tos 0x8] (ttl 64, id 17579)
20:30:10.823151 24.192.1.18.4872 > 24.192.22.163.65470: . 18981:20441(1460) ack 1 win 32768 (DF) (ttl 62, id 37048)
20:30:10.824160 24.192.1.18.4872 > 24.192.22.163.65470: . 20441:21901(1460) ack 1 win 32768 (DF) (ttl 62, id 37049)
20:30:10.824628 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 21901 win 14600 [tos 0x8] (ttl 64, id 17580)
20:30:10.825158 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 21901 win 17520 [tos 0x8] (ttl 64, id 17581)
20:30:12.808958 24.192.1.18.4872 > 24.192.22.163.65470: . 18981:20441(1460) ack 1 win 32768 (DF) (ttl 62, id 37166)
20:30:12.809528 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 21901 win 17520 [tos 0x8] (ttl 64, id 17582)
20:30:12.824039 24.192.1.18.4872 > 24.192.22.163.65470: . 21901:23361(1460) ack 1 win 32768 (DF) (ttl 62, id 37169)
20:30:12.825032 24.192.1.18.4872 > 24.192.22.163.65470: . 23361:24821(1460) ack 1 win 32768 (DF) (ttl 62, id 37170)
20:30:12.825506 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 24821 win 14600 [tos 0x8] (ttl 64, id 17583)
20:30:12.826034 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 24821 win 17520 [tos 0x8] (ttl 64, id 17584)
20:30:14.849456 24.192.1.18.4872 > 24.192.22.163.65470: . 21901:23361(1460) ack 1 win 32768 (DF) (ttl 62, id 37307)
20:30:14.850006 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 24821 win 17520 [tos 0x8] (ttl 64, id 17585)
20:30:14.864083 24.192.1.18.4872 > 24.192.22.163.65470: . 24821:26281(1460) ack 1 win 32768 (DF) (ttl 62, id 37308)
20:30:14.865039 24.192.1.18.4872 > 24.192.22.163.65470: . 26281:27741(1460) ack 1 win 32768 (DF) (ttl 62, id 37309)
20:30:14.865569 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 27741 win 14600 [tos 0x8] (ttl 64, id 17586)
20:30:14.866096 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 27741 win 17520 [tos 0x8] (ttl 64, id 17587)
20:30:16.848867 24.192.1.18.4872 > 24.192.22.163.65470: . 24821:26281(1460) ack 1 win 32768 (DF) (ttl 62, id 37386)
20:30:16.849452 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 27741 win 17520 [tos 0x8] (ttl 64, id 17588)
20:30:16.865747 24.192.1.18.4872 > 24.192.22.163.65470: . 27741:29201(1460) ack 1 win 32768 (DF) (ttl 62, id 37387)
20:30:16.866719 24.192.1.18.4872 > 24.192.22.163.65470: . 29201:30661(1460) ack 1 win 32768 (DF) (ttl 62, id 37388)
20:30:16.867237 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 30661 win 14600 [tos 0x8] (ttl 64, id 17589)
20:30:16.867764 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 30661 win 17520 [tos 0x8] (ttl 64, id 17590)
20:30:18.870347 24.192.1.18.4872 > 24.192.22.163.65470: . 27741:29201(1460) ack 1 win 32768 (DF) (ttl 62, id 37577)
20:30:18.870940 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 30661 win 17520 [tos 0x8] (ttl 64, id 17591)
20:30:18.911664 24.192.1.18.4872 > 24.192.22.163.65470: . 30661:32121(1460) ack 1 win 32768 (DF) (ttl 62, id 37581)
20:30:18.912682 24.192.1.18.4872 > 24.192.22.163.65470: . 32121:33581(1460) ack 1 win 32768 (DF) (ttl 62, id 37582)
20:30:18.913125 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 33581 win 14600 [tos 0x8] (ttl 64, id 17592)
20:30:18.913630 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 33581 win 17520 [tos 0x8] (ttl 64, id 17593)
20:30:20.868892 24.192.1.18.4872 > 24.192.22.163.65470: . 30661:32121(1460) ack 1 win 32768 (DF) (ttl 62, id 37730)
20:30:20.869462 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 33581 win 17520 [tos 0x8] (ttl 64, id 17595)
20:30:20.883582 24.192.1.18.4872 > 24.192.22.163.65470: . 33581:35041(1460) ack 1 win 32768 (DF) (ttl 62, id 37733)
20:30:20.884597 24.192.1.18.4872 > 24.192.22.163.65470: . 35041:36501(1460) ack 1 win 32768 (DF) (ttl 62, id 37734)
20:30:20.885046 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 36501 win 14600 [tos 0x8] (ttl 64, id 17596)
20:30:20.885556 24.192.22.163.65470 > 24.192.1.18.4872: . [tcp sum ok] ack 36501 win 17520 [tos 0x8] (ttl 64, id 17597)
^C
177 packets received by filter
0 packets dropped by kernel