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Ticket ID: SIXXS #5073997 Ticket Status: Resolved PoP: nlede01 - BIT BV (Ede)
Subnet not reachable
![[nl]](/s/countries/nl.gif) Shadow Hawkins on Thursday, 30 June 2011 21:02:36
Hello,
After the downtime of the nlede01 pop my tunnel T3109 is working fine again, however my subnet R1480 is not reachable anymore. It seems that the pop has lost knowledge about my subnet.
some traceroutes from an external site
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Test: traceroute to pop-side of tunnel is ok
ruud@31maart:~$ traceroute -n 2001:7b8:2ff:5c::1
traceroute to 2001:7b8:2ff:5c::1 (2001:7b8:2ff:5c::1), 30 hops max, 80 byte packets
1 2a02:2308::1 0.338 ms 0.300 ms 0.274 ms
2 2a01:310:8312:652::1 4.306 ms 4.652 ms 4.635 ms
3 2a01:310:8312:3900::3 1.711 ms 1.702 ms 1.700 ms
4 2001:7f8:1::a501:2859:2 2.684 ms 2.627 ms 2.580 ms
5 2001:7b8:2ff:5c::1 2.552 ms 2.486 ms 2.473 ms
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Test: traceroute to my side of tunnel is also ok:
ruud@31maart:~$ traceroute -n 2001:7b8:2ff:5c::2
traceroute to 2001:7b8:2ff:5c::2 (2001:7b8:2ff:5c::2), 30 hops max, 80 byte packets
1 2a02:2308::1 0.285 ms 0.248 ms 0.220 ms
2 2a01:310:8312:652::1 1.129 ms 1.283 ms 1.271 ms
3 2a01:310:8312:3900::3 1.200 ms 1.198 ms 1.234 ms
4 2001:7f8:1::a501:2859:2 2.316 ms 2.265 ms 2.423 ms
5 2001:7b8:3:47:2e0:81ff:fe5a:69dd 2.679 ms 2.657 ms 2.737 ms
6 2001:7b8:2ff:5c::2 24.218 ms 27.224 ms 28.973 ms
tshark shows incoming and outgoing response traffic.
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Test: traceroute to an address in my subnet:
ruud@31maart:~$ traceroute -n 2001:7b8:329::
traceroute to 2001:7b8:329:: (2001:7b8:329::), 30 hops max, 80 byte packets
1 2a02:2308::1 0.314 ms 0.285 ms 0.272 ms
2 2a01:310:8312:652::1 1.112 ms 1.151 ms 1.294 ms
3 2a01:310:8312:3900::3 1.024 ms 13.419 ms 13.456 ms
4 2001:7f8:1::a501:2859:2 2.336 ms 2.513 ms 2.504 ms
5 2001:7b8:3:47:2e0:81ff:fe5a:69dd 2.476 ms !N 2.708 ms !N 2.869 ms !N
tshark shows no incoming traffic.
some traces from my machine:
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Test: source address is my side of tunnel
ruud@duckstad:~# traceroute -n -I -s 2001:7b8:2ff:5c::2 2001:7b8:2ff:5c::1
traceroute to 2001:7b8:2ff:5c::1 (2001:7b8:2ff:5c::1), 30 hops max, 40 byte packets
1 2001:7b8:2ff:5c::1 17.058 ms 18.503 ms 20.407 ms
tsharks shows outgoing requests and incoming responses:2033.390645
2033.390645 2001:7b8:2ff:5c::2 -> 2001:7b8:2ff:5c::1 ICMPv6 Echo request
2033.390683 2001:7b8:2ff:5c::2 -> 2001:7b8:2ff:5c::1 ICMPv6 Echo request
... 14 more requests ...
2033.407803 2001:7b8:2ff:5c::1 -> 2001:7b8:2ff:5c::2 ICMPv6 Echo reply
2033.411009 2001:7b8:2ff:5c::1 -> 2001:7b8:2ff:5c::2 ICMPv6 Echo reply
... 14 more replies ...
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Test: source address is an address in my subnet
ruud@duckstad:~$ traceroute -n -s 2001:7b8:329:: 2001:7b8:2ff:5c::1
traceroute to 2001:7b8:2ff:5c::1 (2001:7b8:2ff:5c::1), 30 hops max, 40 byte packets
1 * * *
2 * * *
3 * * *
...and so on...
tshark only shows outgoing requests:
2290.045699 2001:7b8:329:: -> 2001:7b8:2ff:5c::1 ICMPv6 Echo request
2295.049204 2001:7b8:329:: -> 2001:7b8:2ff:5c::1 ICMPv6 Echo request
2295.049269 2001:7b8:329:: -> 2001:7b8:2ff:5c::1 ICMPv6 Echo request
...and so on...
Ruud Besseling
State change: resolved
The state of this ticket has been changed to resolved
Subnet not reachable
PING 2001:7b8:329::(2001:7b8:329::) 56 data bytes
64 bytes from 2001:7b8:329::: icmp_seq=1 ttl=58 time=29.5 ms
As such works again.
Subnet not reachable
Shadow Hawkins on Monday, 04 July 2011 17:39:07
I seem to have the exact same problem:
traceroute to 2001:7b8:338:80::80 (2001:7b8:338:80::80), 30 hops max, 40 byte packets
1 2a02:898:42::1 (2a02:898:42::1) 1.883 ms 1.815 ms 1.803 ms
2 fe-0-0-1-0.sbp-1.ipv6.coloclue.net (2a02:898:0:30::1) 3.470 ms 3.461 ms 3.452 ms
3 fe-1-0-0-0.nikhef-1.ipv6.coloclue.net (2a02:898:0:302::1) 5.301 ms 5.293 ms 5.285 ms
4 2001:828:1:3::1:1 (2001:828:1:3::1:1) 2.220 ms 2.216 ms 3.354 ms
5 amsix-501.xe-0-0-0.jun1.bit-1.network.bit.nl (2001:7f8:1::a501:2859:2) 4.174 ms 5.199 ms 4.167 ms
6 2001:7b8:3:47:2e0:81ff:fe5a:69dd (2001:7b8:3:47:2e0:81ff:fe5a:69dd) 4.153 ms !N 3.692 ms !N 3.662 ms !N
Endpoint is fine:
traceroute to 2001:7b8:2ff:b::2 (2001:7b8:2ff:b::2), 30 hops max, 40 byte packets
1 2a02:898:42::1 (2a02:898:42::1) 0.533 ms 12.890 ms 12.888 ms
2 fe-0-0-1-0.sbp-1.ipv6.coloclue.net (2a02:898:0:30::1) 12.888 ms 12.881 ms 12.911 ms
3 fe-1-0-0-0.nikhef-1.ipv6.coloclue.net (2a02:898:0:302::1) 510.177 ms 510.183 ms 510.176 ms
4 2001:828:1:3::1:1 (2001:828:1:3::1:1) 12.812 ms 12.804 ms 12.795 ms
5 amsix-501.xe-0-0-0.jun1.bit-1.network.bit.nl (2001:7f8:1::a501:2859:2) 12.794 ms 12.827 ms 12.814 ms
6 2001:7b8:3:47:2e0:81ff:fe5a:69dd (2001:7b8:3:47:2e0:81ff:fe5a:69dd) 12.756 ms 3.705 ms 3.257 ms
7 cl-12.ede-01.nl.sixxs.net (2001:7b8:2ff:b::2) 27.159 ms 36.133 ms 22.133 ms
Gr,
Ivo van Dongen (IVD-SIXXS)
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![[ch]](/s/countries/ch.gif)
on Friday, 01 July 2011 02:15:50
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