They don't support DS-Lite. But DS-Lite is just native IPv6 with an IPIPv6 tunnel to a CGNAT gateway for IPv4. Mikrotik routers can do the tunneling, but lack the automatic configuration and the necessary DHCPv6 features to script the setup. If you know the domain name of the CGNAT gateway (the "AFTR"), you can set up the tunnel manually. See RFC 6333 for details. Be warned though, the throughput will be limited due to the lack of IPv6 fast tracking support. The router can use fast path acceleration only if there are no IPv6 firewall rules.I was not aware that any Mikrotik Products supported DS-Lite, please explain how you support this.