Is it really? Apart from the missing port-forwarding, DS-Lite seems to be one of the better solutions to the IPv4 shortage to me. There's only a single NAT at the ISP, the local router tunnels IPv4 packages directly to the AFTR. For peer-to-peer applications, both UDP and TCP hole punching work fine.
Maybe some ISPs will implement the Port Control Protocol [1] at some point, which would allow port forwarding with the DS-Lite NATs.
Maybe some ISPs will implement the Port Control Protocol [1] at some point, which would allow port forwarding with the DS-Lite NATs.
[1]: https://tools.ietf.org/html/rfc6887