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Routing problems to/from IETF network
Hi,
(I don't know better please to send this... if you do, please resend
to appropriate place)
we have IPv6 routing issues reaching IPv6 IETF problem:
$ tracepath6 www.ietf.org
1?: [LOCALHOST] pmtu 1500
1: 2001:1488:ac14:1400::3 0.738ms
1: 2001:1488:ac14:1400::3 0.578ms
2: gw-v101.v6.nic.cz 0.998ms
3: ge3-3-896.tr1.prg2.ipv6.vol.cz 97.207ms
4: te3-2.tr3.prg1.ipv6.vol.cz 2.000ms asymm 3
5: gblx-ffm-tacr.ipv6.vol.cz 26.704ms asymm 4
6: att-gw.gblx.net 128.611ms
7: 2001:450:1:1::29 208.927ms asymm 5
8: gblx-gw.mdtnj.ipv6.att.net 156.761ms asymm 6
9: gblx-gw.mdtnj.ipv6.att.net 157.116ms pmtu 1480
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
$ traceroute6 www.ietf.org
traceroute to www.ietf.org (2001:1890:1112:1::20) from
2001:1488:ac14:1400:218:8bff:feab:cfc, 30 hops max, 16 byte packets
1 2001:1488:ac14:1400::3 (2001:1488:ac14:1400::3) 0.484 ms 0.304
ms 0.247 ms
2 gw-v101.v6.nic.cz (2001:1488:800::1) 0.55 ms 0.778 ms 0.505 ms
3 ge3-3-896.tr1.prg2.ipv6.vol.cz (2001:1508:1:9::1) 0.682 ms 0.649
ms 0.607 ms
4 te3-2.tr3.prg1.ipv6.vol.cz (2001:1508:1:17::1) 0.995 ms 0.864 ms 0.853 ms
5 gblx-ffm-tacr.ipv6.vol.cz (2001:1508:1:8::2) 25.627 ms 25.516 ms
25.418 ms
6 att-gw.gblx.net (2001:1890:61:8805::2) 127.813 ms 128.115 ms 127.471 ms
7 2001:450:1:1::29 (2001:450:1:1::29) 127.844 ms 127.502 ms 127.535 ms
8 gblx-gw.mdtnj.ipv6.att.net (2001:1890:61:8805::1) 151.882 ms
152.104 ms 156.53 ms
9 * *
And GLX requires reverse traceroute:
Our research of this issue concludes that the problem is on the AT&T
network, or a return path problem from ietf.org through AT&T. We hand
off the route to AT&T correctly. Therefore, the problem is most likey
a return path problem, or something on the AT&T network. See our
trace below. In order to further troubleshoot this on our side, we
will need a reverse traceroute from ietf.org ip to your ip.
Could somebody responsible for IPv6 in IETF network please contact me?
Thank you,
--
Ondrej Sury
technicky reditel/Chief Technical Officer
-----------------------------------------
CZ.NIC, z.s.p.o. -- .cz domain registry
Americka 23,120 00 Praha 2,Czech Republic
mailto:ondrej.sury@nic.cz http://nic.cz/
sip:ondrej.sury@nic.cz tel:+420.222745110
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