There is an alternative, one can create a IPv6 only service, as tunnels with static IP are commonly free.
Of course there is the downside that no one except those very few people that has ipv6 will be able to use that service, but it is free and it can be a very useful way to access a computer behind nat.
Of course there is the downside that no one except those very few people that has ipv6 will be able to use that service, but it is free and it can be a very useful way to access a computer behind nat.