Hurricane Electric's IPv6 Tunnel Broker Forums

Tunnelbroker.net Specific Topics => Questions & Answers => Topic started by: falkstern on September 03, 2012, 07:54:27 AM

Title: tserv1.fra1.he.net down?
Post by: falkstern on September 03, 2012, 07:54:27 AM
Hi all,

seems my v6 tunnel is no longer working.

tserv1 sends me an ICMP port unreachable.

Provider is Deutsche Telekom, OS is Linux. This tunnel was working before.

# tcpdump -n -i ppp0 host 216.66.80.30
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ppp0, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes
16:51:49.297381 IP 216.66.80.30 > 93.200.118.57: ICMP 216.66.80.30 protocol 41 port 0 unreachable, length 132
Title: Re: tserv1.fra1.he.net down?
Post by: cholzhauer on September 03, 2012, 07:57:03 AM
Status page says it's OK

http://tunnelbroker.net/status.php

May want to email ipv6@he.net
Title: Re: tserv1.fra1.he.net down?
Post by: kasperd on September 03, 2012, 08:54:06 AM
May want to email ipv6@he.net
I did that 7 hours ago.

# tcpdump -n -i ppp0 host 216.66.80.30
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ppp0, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes
16:51:49.297381 IP 216.66.80.30 > 93.200.118.57: ICMP 216.66.80.30 protocol 41 port 0 unreachable, length 132

I did not get any ICMP errors from the tunnel server at the time. But AFAIK during a tunnel server restart all users will get those ICMP errors. And at the moment the connection appears to be working again:
traceroute to he.net (2001:470:0:76::2), 30 hops max, 80 byte packets
 1  2a01:d0:839a:babe:d19e:266e:d66c:545c  10.188 ms  16.549 ms  16.574 ms
 2  2001:470:1f0a:1e45::1  77.088 ms  77.127 ms  77.122 ms
 3  2001:470:0:69::1  97.573 ms  76.916 ms  76.945 ms
 4  2001:470:0:1d2::1  79.194 ms  79.237 ms  79.247 ms
 5  2001:470:0:128::1  162.615 ms  142.240 ms  142.254 ms
 6  2001:470:0:10e::1  206.843 ms  206.881 ms  206.874 ms
 7  2001:470:0:18d::1  206.668 ms  204.410 ms  204.430 ms
 8  2001:470:0:2d::1  204.571 ms  204.603 ms  204.612 ms
 9  2001:470:0:76::2  204.207 ms  196.030 ms  196.040 ms
Title: Re: tserv1.fra1.he.net down?
Post by: kasperd on September 03, 2012, 08:56:13 AM
And at the moment the connection appears to be working again
This is however a reoccurring problem. I only keep using tserv1.fra because it gives me opportunity to test how my gateway deals with a failing tunnel server, and automatically finds alternatives. I think the other tunnel servers are much more reliable.