@lstevens

I am not an expert either, but it seems they developed sort of workarounds for the transition period generally called 6to4 and described for example here 6to4 - Wikipedia. The obvious way to use these workarounds is to have them deployed in a router. OpenWRT already did the work described in the link of my first post and particularly implemented in IPv6-in-IPv4 tunnels (6rd, 6to4, 6in4) but to have it fully functional something should be installed in my GLI mini router since this is obviously not the standard installation.

So I would need some direction to understand what is the more suitable firmware for that and possibly also which software among those mentioned in that link. Well if somebody has some ideas or better experience than me.

Best and thanks