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Ticket ID: SIXXS #755847 Ticket Status: Invalid PoP: simbx01 - Amis (Maribor)
PoP no longer pings tunnels, reporting tunnel downtime
![[si]](/s/countries/si.gif) Carmen Sandiego on Monday, 30 June 2008 12:44:08
Name: Andrej Ota (AO1377-RIPE)
Tunnel: T8493, T12325
I have been notified about tunnel downtime for tunnels T8493 and T12325. After investigating the issue, I have determined the following:
- Both ingress and egress IPv6 traffic are flowing as expected. There are no observable problems with connectivity.
- From 00:19 UTC when I started tcpdump capture, up to 05:00 UTC when I finished it, there were no ICMP ECHO packets coming from PoP.
- Firewalls are not in use, thus they can not interfere with the traffic.
- Even multicast was still working as expected.
As this happened on two separate locations on two separate ISPs, I think this might be a problem on the PoP side, as there are no other indications of other errors. My guess is that PoP stopped sending ICMP ECHO probes, which caused invalid "Tunnel Downtime" reports.
Sincerely,
Andrej Ota
AO1377-RIPE
PoP no longer pings tunnels, reporting tunnel downtime
![[cz]](/s/countries/cz.gif) Shadow Hawkins on Monday, 30 June 2008 13:01:03
I have same problem for tunnel T13778.
PoP no longer pings tunnels, reporting tunnel downtime
Please actually read the "Reporting Problems" section on the Contact page.
PoP no longer pings tunnels, reporting tunnel downtime
Shadow Hawkins on Thursday, 03 July 2008 13:56:45
Ok, I have same issue and i decide to add related information....
My nic handle is: MS6679-RIPE
Related tunnel is: T13778
I am connected via PODA provider, without NAT, I have public IPv4 adresses.
I have openWRT router, his uname -a report:
Linux urberi 2.4.34 #3 Sun Sep 30 20:33:21 CEST 2007 mips unknown
Interfaces, routes and firewalls:
root@urberi:~# ip6tables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
root@urberi:~#
----------------------------------------------
root@urberi:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
root@urberi:~#
interfaces:
root@urberi:~# ip a s
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
inet6 ::1/128 scope host
2: eth0: <BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1d:60:ad:74:8b brd ff:ff:ff:ff:ff:ff
inet6 fe80::21d:60ff:fead:748b/64 scope link
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
link/ether 40:10:18:00:00:2d brd ff:ff:ff:ff:ff:ff
4: eth0.0: <BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc noqueue
link/ether 00:1d:60:ad:74:8b brd ff:ff:ff:ff:ff:ff
inet6 fe80::21d:60ff:fead:748b/64 scope link
5: br-lan: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
link/ether 00:1d:60:ad:74:8b brd ff:ff:ff:ff:ff:ff
inet 82.209.54.74/29 brd 82.209.54.79 scope global br-lan
inet6 2001:15c0:668e::1/48 scope global
inet6 2002:52d1:364a::1/64 scope global
inet6 fe80::21d:60ff:fead:748b/64 scope link
6: sit0@NONE: <NOARP> mtu 1480 qdisc noop
link/sit 0.0.0.0 brd 0.0.0.0
7: wl0: <BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:1d:60:ad:74:8b brd ff:ff:ff:ff:ff:ff
inet6 fe80::21d:60ff:fead:748b/64 scope link
8: 6to4@NONE: <NOARP,UP> mtu 1480 qdisc noqueue
link/sit 82.209.54.74 brd 0.0.0.0
inet6 ::82.209.54.74/128 scope global
inet6 2002:52d1:364a::1/16 scope global
9: sixxs@NONE: <POINTOPOINT,NOARP,UP> mtu 1280 qdisc noqueue
link/sit 82.209.54.74 peer 212.18.63.73
inet6 fe80::52d1:364a/128 scope link
inet6 2001:15c0:65ff:141::2/64 scope global
root@urberi:~#
routes:
::/96 via :: dev 6to4 metric 256 mtu 1480 advmss 1220
2001:15c0:65ff:141::/64 via :: dev sixxs metric 256 mtu 1280 advmss 1220
2001:15c0:668e::/48 dev br-lan metric 256 mtu 1500 advmss 1440
2001:15c0:668e::/48 dev br-lan metric 1024 mtu 1500 advmss 1440
2002:52d1:364a::/64 dev br-lan metric 256 mtu 1500 advmss 1220
2002::/16 dev 6to4 metric 256 mtu 1480 advmss 1220
fe80::/64 dev eth0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev eth0.0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev br-lan metric 256 mtu 1500 advmss 1220
fe80::/64 dev wl0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev 6to4 metric 256 mtu 1480 advmss 1220
fe80::/64 via :: dev sixxs metric 256 mtu 1280 advmss 1220
ff00::/8 dev eth0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev eth0.0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev br-lan metric 256 mtu 1500 advmss 1220
ff00::/8 dev wl0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev 6to4 metric 256 mtu 1480 advmss 1220
ff00::/8 dev sixxs metric 256 mtu 1280 advmss 1220
default via ::192.88.99.1 dev 6to4 metric 1024 mtu 1480 advmss 1220
default via 2001:15c0:65ff:141::1 dev sixxs metric 1024 mtu 1280 advmss 1220
root@urberi:~# ip r s
82.209.54.72/29 dev br-lan proto kernel scope link src 82.209.54.74
default via 82.209.54.73 dev br-lan
IPv4 traceroute:
mantisha:~ # traceroute 212.18.63.73
traceroute to 212.18.63.73 (212.18.63.73), 30 hops max, 40 byte packets
1 ip-82-209-54-73.customer.poda.cz (82.209.54.73) 0.203 ms 0.129 ms 0.166 ms
2 bgp1.bb.poda.cz (85.135.32.60) 6.254 ms 6.243 ms 6.349 ms
3 gi9-1.ccr01.prg01.atlas.cogentco.com (149.6.24.9) 5.846 ms 5.765 ms 5.686 ms
4 te1-2.ccr01.bts01.atlas.cogentco.com (130.117.3.30) 10.193 ms 10.111 ms 10.131 ms
5 te1-2.ccr01.vie01.atlas.cogentco.com (130.117.3.25) 12.318 ms 12.332 ms 12.365 ms
6 vix2.highway.telekom.at (193.203.0.11) 12.186 ms vix.highway.telekom.at (193.203.0.21) 12.387 ms vix2.highway.telekom.at (193.203.0.11) 12.159 ms
7 195.3.70.121 (195.3.70.121) 11.986 ms 195.3.70.217 (195.3.70.217) 12.686 ms 195.3.70.121 (195.3.70.121) 11.877 ms
8 195.3.70.70 (195.3.70.70) 11.968 ms 11.904 ms 11.880 ms
9 80.120.176.182 (80.120.176.182) 19.878 ms 19.617 ms 19.715 ms
10 maribor3-po-1.amis.net (212.18.41.137) 23.800 ms 23.884 ms 23.695 ms
11 simbx01.sixxs.net (212.18.63.73) 25.029 ms 24.982 ms 25.116 ms
mantisha:~ #
IPv6 traceroute:
mantisha:~ # traceroute6 2001:15c0:65ff:141::1
traceroute to 2001:15c0:65ff:141::1 (2001:15c0:65ff:141::1), 30 hops max, 40 byte packets
1 urberi.m4r3k.org (2001:15c0:668e::1) 0.285 ms 0.220 ms 0.233 ms
2 gw-322.mbx-01.si.sixxs.net (2001:15c0:65ff:141::1) 25.638 ms 25.713 ms 25.529 ms
mantisha:~ #
State change: invalid
The state of this ticket has been changed to invalid
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![[ch]](/s/countries/ch.gif)
on Monday, 30 June 2008 13:14:36
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