[6bone] problem with ftp.netbsd.org

[Kimmo Suominen]

The problem still exists for me.

Below are the traceroutes for each direction and tcpdumps of an attempt.
The tcpdump was a bit odd -- I kept seeing packets from beowulf to the
ftp server even after I killed the ftp process (and I didn't see any
other ftp processes on the machine).

+ Kim


beowulf:~> ftp ftp.netbsd.org
Trying 3ffe:8050:201:1860:2a0:c9ff:feed:b7ea...
Connected to ftp.netbsd.org.

421 Service not available, remote server timed out. Connection closed
ftp> ^D


beowulf:~> traceroute6 -q1 -w2 ftp.netbsd.org
traceroute6 to ftp.netbsd.org (3ffe:8050:201:1860:2a0:c9ff:feed:b7ea) from 3ffe:2900:b00c:2:250:4ff:feac:7981, 30 hops max, 12 byte packets
 1  dit  0.57 ms
 2  sl-bb1v6-rly-t-48.sprintv6.net  24.104 ms
 3  2001:440:1239:1007::2  79.704 ms
 4  2001:440:1239:1007::2  79.998 ms
 5  3ffe:800::fff9:0:0:2  102.131 ms
 6  3ffe:800::fff9:0:0:2  100.058 ms
 7  ftp6.netbsd.org  103.044 ms


nbftp:~> traceroute6 -q1 -w2 beowulf.gw.com
traceroute6 to beowulf.gw.com (3ffe:2900:b00c:2:250:4ff:feac:7981) from 3ffe:8050:201:1860:2a0:c9ff:feed:b7ea, 30 hops max, 12 byte packets
 1  3ffe:8050:201:1860:200:f8ff:fe02:9a03  0.554 ms
 2  3ffe:8050:ffff::fffe  1.624 ms
 3  3ffe:800::fff9:0:0:1  11.548 ms
 4  2001:478:ffff::a  21.554 ms
 5  2001:440:1239:1007::1  22.501 ms
 6  3ffe:2900:b:7::2  103.124 ms
 7  3ffe:2900:b:7::2  101.241 ms
 8  beowulf.gw.com  102.321 ms


beowulf:~# tcpdump -i ex0 ip6 host ftp.netbsd.org
tcpdump: listening on ex0
15:43:00.489420 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: S 3455727996:3455727996(0) win 16384 <mss 33160,nop,wscale 0,nop,nop,timestamp 0 0> [flowlabel 0x3ef7f]
15:43:00.590674 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: S 3623584296:3623584296(0) ack 3455727997 win 32768 <mss 1440,nop,wscale 0,nop,nop,timestamp 8772594 0>
15:43:00.590852 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: . ack 1 win 16384 <nop,nop,timestamp 0 8772594> [flowlabel 0x3ef7f]
15:43:12.350259 beowulf.gw.com.49385 > ftp6.netbsd.org.ftp: F 450414700:450414700(0) ack 1762195173 win 16384 <nop,nop,timestamp 630 8771987> [flowlabel 0x3ef7d]
15:44:00.602554 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 120 8772594> [flowlabel 0x3ef7f]
15:44:01.602081 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 122 8772594> [flowlabel 0x3ef7f]
15:44:03.602073 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 126 8772594> [flowlabel 0x3ef7f]
15:44:07.602303 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 134 8772594> [flowlabel 0x3ef7f]
15:44:15.602535 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 150 8772594> [flowlabel 0x3ef7f]
15:44:16.352526 beowulf.gw.com.49385 > ftp6.netbsd.org.ftp: F 0:0(0) ack 1 win 16384 <nop,nop,timestamp 758 8771987> [flowlabel 0x3ef7d]
15:44:31.603116 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 182 8772594> [flowlabel 0x3ef7f]
15:45:03.604328 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 246 8772594> [flowlabel 0x3ef7f]
^C
1085 packets received by filter
0 packets dropped by kernel


nbftp:~# tcpdump -i fxp0 ip6 host beowulf.gw.com
tcpdump: listening on fxp0
12:43:00.374725 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: FP 1762195173:1762195272(99) ack 450414701 win 33120 <nop,nop,timestamp 8772593 120> [flowlabel 0xf496c]
12:43:00.534959 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: S 3455727996:3455727996(0) win 16384 <mss 33160,nop,wscale 0,nop,nop,timestamp 0 0> [flowlabel 0x3ef7f]
12:43:00.535158 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: S 3623584296:3623584296(0) ack 3455727997 win 32768 <mss 1440,nop,wscale 0,nop,nop,timestamp 8772594 0>
12:43:00.634521 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: . ack 1 win 16384 <nop,nop,timestamp 0 8772594> [flowlabel 0x3ef7f]
12:43:00.657402 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772594 0> [flowlabel 0xf496d]
12:43:01.374715 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772595 0> [flowlabel 0xf496d]
12:43:03.374581 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772599 0> [flowlabel 0xf496d]
12:43:07.374813 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772607 0> [flowlabel 0xf496d]
12:43:12.394908 beowulf.gw.com.49385 > ftp6.netbsd.org.ftp: F 0:0(0) ack 0 win 16384 <nop,nop,timestamp 630 8771987> [flowlabel 0x3ef7d]
12:43:12.394995 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: . ack 1 win 33120 <nop,nop,timestamp 8772618 120> [flowlabel 0xf496c]
12:43:15.374745 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772623 0> [flowlabel 0xf496d]
12:43:31.374797 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: P 1:63(62) ack 1 win 33120 <nop,nop,timestamp 8772655 0> [flowlabel 0xf496d]
12:44:00.646781 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 120 8772594> [flowlabel 0x3ef7f]
12:44:00.646872 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772714 120> [flowlabel 0xf496d]
12:44:00.647275 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: FP 63:100(37) ack 2 win 33120 <nop,nop,timestamp 8772714 120> [flowlabel 0xf496d]
12:44:01.646876 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 122 8772594> [flowlabel 0x3ef7f]
12:44:01.646966 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772716 120> [flowlabel 0xf496d]
12:44:03.374476 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: FP 1:100(99) ack 2 win 33120 <nop,nop,timestamp 8772719 120> [flowlabel 0xf496d]
12:44:03.646448 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 126 8772594> [flowlabel 0x3ef7f]
12:44:03.646523 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772720 120> [flowlabel 0xf496d]
12:44:04.374417 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: FP 0:99(99) ack 1 win 33120 <nop,nop,timestamp 8772721 120> [flowlabel 0xf496c]
12:44:07.647571 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 134 8772594> [flowlabel 0x3ef7f]
12:44:07.647649 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772728 120> [flowlabel 0xf496d]
12:44:15.646881 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 150 8772594> [flowlabel 0x3ef7f]
12:44:15.646961 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: FP 1:100(99) ack 2 win 33120 <nop,nop,timestamp 8772744 120> [flowlabel 0xf496d]
12:44:16.396892 beowulf.gw.com.49385 > ftp6.netbsd.org.ftp: F 0:0(0) ack 0 win 16384 <nop,nop,timestamp 758 8771987> [flowlabel 0x3ef7d]
12:44:16.396983 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: . ack 1 win 33120 <nop,nop,timestamp 8772746 120> [flowlabel 0xf496c]
12:44:31.648395 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 182 8772594> [flowlabel 0x3ef7f]
12:44:31.648548 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772776 120> [flowlabel 0xf496d]
12:45:03.648837 beowulf.gw.com.49386 > ftp6.netbsd.org.ftp: F 1:1(0) ack 1 win 16384 <nop,nop,timestamp 246 8772594> [flowlabel 0x3ef7f]
12:45:03.648911 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: . ack 2 win 33120 <nop,nop,timestamp 8772840 120> [flowlabel 0xf496d]
12:45:08.373946 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: FP 0:99(99) ack 1 win 33120 <nop,nop,timestamp 8772849 120> [flowlabel 0xf496c]
12:45:19.373862 ftp6.netbsd.org.ftp > beowulf.gw.com.49386: FP 1:100(99) ack 2 win 33120 <nop,nop,timestamp 8772871 120> [flowlabel 0xf496d]
12:45:20.399057 beowulf.gw.com.49385 > ftp6.netbsd.org.ftp: F 0:0(0) ack 0 win 16384 <nop,nop,timestamp 886 8771987> [flowlabel 0x3ef7d]
12:45:20.399138 ftp6.netbsd.org.ftp > beowulf.gw.com.49385: . ack 1 win 33120 <nop,nop,timestamp 8772874 120> [flowlabel 0xf496c]
^C
250449 packets received by filter
0 packets dropped by kernel



| From:    Stephen Stuart <stuart@tech.org>
| Date:    Fri, 14 Jun 2002 12:17:13 -0700
|
| Remaining problems *seem* to have the ISI tunnel in common. Interface
| MTU size on the tunnel interface toward the ISI router has now been
| matched, just as with the interior tunnel interface.