KOS version was actually 4-ALPHA 4. Sorry. And it was an IPV6 Routing issue. Rolled back to 3.9.2 now. Working like a charm.
For some reasons the router is loosing the IPV6 routing while IPV4 one is correct
Using IPV6 over MAP-T on Skiwifi. I got the IP and the connection but I do not navigate. It seems some kind of routing issue. On version 3.9.2 everything was working fine. What should I do to solve it on the new version?