Hi,
I have native ipv6 configuration on my server in OVH and ipv6 HE.NET tunnel configured on my different server located in other country. The problem is that there is no ipv6 connectivity on last hop between OVH and HE.NET:
from HE.NET to OVH:
1.|-- lannetplv6-1.tunnel.tserv 0.0% 10 10.5 10.4 10.0 10.8 0.0
2.|-- ge2-20.core1.waw1.he.net 0.0% 10 20.8 15.2 10.3 21.4 3.9
3.|-- 10ge1-2.core1.prg1.he.net 0.0% 10 25.3 24.1 21.5 28.7 2.5
4.|-- 10ge15-3.core1.fra1.he.ne 0.0% 10 28.9 35.1 28.8 41.7 4.7
5.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
6.|-- rbx-g2-a9.fr.eu 0.0% 10 37.3 37.8 37.1 39.4 0.6
7.|-- rbx-s50-6k.fr.eu 0.0% 10 37.3 42.3 36.9 79.0 13.1
8.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
from OVH to HE.NET:
1.|-- vss-3b-6k.fr.eu 0.0% 10 0.5 11.7 0.5 63.4 23.6
2.|-- rbx-g1-a9.fr.eu 0.0% 10 1.7 1.4 0.9 2.4 0.5
3.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
4.|-- 30gigabitethernet1-3.core 0.0% 10 17.6 10.0 5.9 18.6 5.7
5.|-- 10ge3-2.core1.ber1.he.net 0.0% 10 23.0 23.6 20.4 30.3 3.5
6.|-- 10ge1-2.core1.waw1.he.net 0.0% 10 33.1 33.0 29.3 39.2 4.1
7.|-- tserv1.waw1.he.net 0.0% 10 31.5 31.3 31.1 31.5 0.0
8.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
my friend reported me that he has exactly the same problem between OVH and HE.NET. There are no problems between OVH/HE.NET and for example google or any other network.