I still can't do ftp at ftp.debian.org
I have been having trouble with 'ls' and 'get' from ftp.debian.org
(and some others) with ftp, ncftp, and mirror. I can connect to my
service providers SUNOS machines and helsinki (to get the latest
kernel). In fact most sites work. But ftp.debian.org doesn't.
Here's a listing of the software I've tried:
$ dpkg -l netbase ncftp mirror
Desired=Unknown/Install/Remove/Purge
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-===============-==============-============================================
ii netstd 2.02-1 Networking binaries and daemons for Linux
ii ncftp 2.3.0-1 A user-friendly and full-featured FTP client
ii mirror 2.8-3 Perl program for keeping ftp archives up-to-
Here is some tcpdump output (I turned on tcpdump just before typing
"ls" on ftp.debian.org - I was able to "cd" to any directory, but "ls"
hangs):
20:49:14.454983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 3115161228:3115161255(27) ack 455169024 win 29518 (DF) [tos 0x10]
20:49:14.834983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: P 1:31(30) ack 27 win 8192 (DF)
20:49:14.834983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 27:33(6) ack 31 win 29488 (DF) [tos 0x10]
20:49:15.234983 bugs-2.cps.cmich.edu.ftp-data > syntropy.netaxs.com.40002: S 461855566:461855566(0) win 24804 <mss 468> (DF)
20:49:15.234983 syntropy.netaxs.com.40002 > bugs-2.cps.cmich.edu.ftp-data: S 3165999062:3165999062(0) ack 461855567 win 29484 <mss 468>
20:49:15.384983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 27:33(6) ack 31 win 29488 (DF) [tos 0x10]
20:49:15.454983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: . ack 33 win 8192 (DF)
20:49:15.694983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: . ack 33 win 8192 (DF)
20:49:18.224983 syntropy.netaxs.com.40002 > bugs-2.cps.cmich.edu.ftp-data: S 3165999062:3165999062(0) ack 461855567 win 29484 <mss 468>
20:49:18.234983 bugs-2.cps.cmich.edu.ftp-data > syntropy.netaxs.com.40002: S 461855566:461855566(0) win 24804 <mss 468> (DF)
20:49:18.734983 bugs-2.cps.cmich.edu.ftp-data > syntropy.netaxs.com.40002: . ack 1 win 24804 (DF)
20:49:18.774983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: P 31:103(72) ack 33 win 8192 (DF)
20:49:18.774983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: . ack 103 win 29672 [tos 0x10]
20:49:19.244983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: P 103:133(30) ack 33 win 8192 (DF)
20:49:19.354983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24146:216@272)
20:49:19.374983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: . ack 133 win 29642 [tos 0x10]
20:49:20.374983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24147:216@272)
20:49:20.534983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: P 103:131(28) ack 33 win 8192 (frag 24148:48@0+)
20:49:22.264983 bugs-2.cps.cmich.edu.ftp-data > syntropy.netaxs.com.40002: . 1:29(28) ack 1 win 52104 (frag 24149:48@0+)
20:49:22.294983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@48+)
20:49:22.314983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@96+)
20:49:22.354983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@144+)
20:49:22.364983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@192+)
20:49:22.384983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@240+)
20:49:22.404983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@288+)
20:49:22.424983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24149:48@336+)
20:49:23.014983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: P 103:131(28) ack 33 win 8192 (frag 24150:48@0+)
20:49:23.024983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 24150:2@48)
20:49:23.024983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: . ack 133 win 29642 [tos 0x10]
20:49:23.154983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: . ack 133 win 29642 [tos 0x10]
20:49:50.524983 syntropy.netaxs.com > bugs-2.cps.cmich.edu: icmp: ip reassembly time exceeded
20:49:52.414983 syntropy.netaxs.com > bugs-2.cps.cmich.edu: icmp: ip reassembly time exceeded
20:50:29.774983 bugs-2.cps.cmich.edu > syntropy.netaxs.com: (frag 15348:12@544)
20:50:35.324983 syntropy.netaxs.com.1023 > www.nothinbut.net.22: . ack 1136000897 win 29649 [tos 0x10]
20:50:35.334983 syntropy.netaxs.com.domain > netaxs.com.domain: 51216+ (45)
20:50:35.694983 netaxs.com.domain > syntropy.netaxs.com.domain: 51216* 1/2/1 (173)
20:50:35.704983 www.nothinbut.net.22 > syntropy.netaxs.com.1023: . ack 1 win 14335 [tos 0x10]
20:50:35.714983 syntropy.netaxs.com.domain > netaxs.com.domain: 51217+ (35)
20:50:35.864983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 33:36(3) ack 133 win 29642 urg 3 (DF) [tos 0x10]
20:50:35.884983 www.nothinbut.net.22 > syntropy.netaxs.com.1023: . ack 1 win 14335 [tos 0x10]
20:50:35.884983 syntropy.netaxs.com.1023 > www.nothinbut.net.22: . ack 1 win 29649 [tos 0x10]
20:50:36.044983 netaxs.com.domain > syntropy.netaxs.com.domain: 51217 1/2/1 (137)
20:50:36.284983 bugs-2.cps.cmich.edu.ftp > syntropy.netaxs.com.1040: . ack 36 win 8192 (DF)
20:50:36.284983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 36:43(7) ack 133 win 29642 (DF) [tos 0x10]
20:50:36.904983 syntropy.netaxs.com.1040 > bugs-2.cps.cmich.edu.ftp: P 36:43(7) ack 133 win 29642 (DF) [tos 0x10]
Is there a fragmentation problem? Although this is under kernel
1.3.86, I also tested 'ole reliable, 1.2.13 and "ls" also hung. Maybe
it's a problem with dip? Any further debugging you can suggest?
--
Christopher J. Fearnley | Linux/Internet Consulting
cjf@netaxs.com | UNIX SIG Leader at PACS
http://www.netaxs.com/~cjf | (Philadelphia Area Computer Society)
ftp://ftp.netaxs.com/people/cjf | Design Science Revolutionary
"Dare to be Naive" -- Bucky Fuller | Explorer in Universe
Reply to: