Route server IPv6 avoid_martians

Hi, This page describes an IPv4 route-server: https://gitlab.labs.nic.cz/labs/bird/wikis/Simple_route_server I like the function avoid_martians(), and use it (mine's even been expanded a bit) I'd like to implement something similar for IPv6. Has anyone else already created a function for IPv6? I'm especially wondering about how to filter out too-long prefixes--i think that's the 0.0.0.0/0{25,32} line. Any pointers, even just to how this syntax works, would be welcome. I hope i can update the wiki with the knowledge gleaned. Thanks, Jonathan MBIX.ca