Tunnel stopped to work.

[kasperd]

tracerouter from my router to it's external address looks as follows:

Code Select Expand

/opt/home/admin # traceroute -n 109.172.12.74
traceroute to 109.172.12.74 (109.172.12.74), 30 hops max, 38 byte packets
1  10.78.144.1  3.847 ms  3.785 ms  2.957 ms
2  172.30.78.90  5.752 ms  2.887 ms  3.079 ms
3  172.30.78.97  6.762 ms  16.390 ms  6.516 ms
4  172.31.78.3  1.415 ms  1.360 ms  1.333 ms
5  172.31.78.3  1.254 ms  1.131 ms  1.377 ms
6  172.30.78.137  0.838 ms  0.839 ms  0.828 ms
7  172.30.78.134  0.853 ms  0.943 ms  1.513 ms
8  89.221.199.129  1.259 ms  1.327 ms  1.467 ms
9  109.172.12.74  1.333 ms  1.331 ms  1.423 ms
10  *  *  *
11  *  *  *
12  *  *  *
13  *  *  *
14  *  *  *
15  109.172.12.74  2.333 ms  2.650 ms  2.741 ms

That is one weird network. You are lucky to get the tunnel working at all. Why has that ISP not started deploying native IPv6? Their network could be so much cleaner with IPv6.

[broquea]

Deleting and recreating worked only after I used different tunnel server. When I just dropped the tunnel and immediately recreated it to the same tunnel server it did not work.

Probably because there was a stale interface not removed completely. Which is why I recommended opening a ticket by emailing them and having them take a look. But glad it is working again!