At the moment I can buy a temporary public ipv4 address and use my ipv6 tunnel without problems.
Since providers tend more and more to offer private ipv4 addresses I am afraid that I cannot get a public ipv4 address anymore when I get my FTTH connection and have to use a new contract.
Is there any chance getting my ipv6 /48 with DSLITE? Maybe by using ipv6 for the tunnel?