Hello,
since I last moved, I only have internet access using LTE where I get a internal IPv4 address (Carrier grade NAT) that is not externally reachable.
Is there any way to use an IPv6 tunnel with that restrictions?
With HE, your endpoint needs to be public and ping-able
just pingable or some ports need to be opened?
It needs to pass protocol 41
You could VPN to a VPS, then do the tunnel from there. At that point the VPS would probably have an ipv6 address, so you could manually setup some tunnelbroker config on the VPS.