IPv6 firewall - How do I allow incoming ipv6 connections to a specific address?

RouterOS Beginner Basics
1

My target machine has a dynamic IPv6 prefix:

::::cd19:ab99:1233:88c0

the prefix “::::” will often change.

so, How can I input this address to firewall’s Dst.Address ?

In openwrt ,I can use “::cd19:ab99:1233:88c0/::ffff:ffff:ffff:ffff” to match this dynamic IPv6 prefix, but I don’t know to do it in RouterOS.

Thank you.

2

Is the first time I see this need.
Probably on RouterOS is not possible directly on firewall, but using scripting.