I’m on att for my home internet and unless you go to the effort to bypass their router (it does 802.1x authentication so it’s a bit of a pain to do so), they only give you /64s via dhcpv6 prefix delegation, nothing bigger. You can request up to 8 of them though.

It looks like mikrotik can’t request multiple prefixes in a single request, based on their documentation.

Edge routers look like they can if configured from the cli.

I’ve been using a linux box with dhcpcd and that works. Would be nicer if systemd-networkd supported multiple prefixes directly so I didn’t have to try to get dhcpcd and systemd-networkd to try to play nice with each other since I use systemd-networkd for the lan side interfaces, wireguard, etc.

What other routers and dhcpv6 clients support requesting multiple prefixes in a single request? I’m looking to see if there’s a better option out there than what I’m doing now.