Hello, Our ISP (Free in France) provides IPv6 but they only talk about their own routers, not others. I upgraded ISP info (last version November 2025) but when I go to IPv6 tunnel, it still says there

Hello, For about three weeks now, we experience a strange problem with our router. Mostly in the evening, as we use it, some sites that were normally reachable suddenly become unreachable. This uses t