I am attmpting to setup my router behind a SwissCom internet box plus and I can see that I get an IPv6 address but the router does not appear to support Prefix delegation when this is requested by a client device. I should be able to partition my address space as I wish (and can do with our limitiation in the UK)
I need to get this to work in order to enable some VPN functionality.
I've been trying to get this to work myself. As far as I've been able to understand, Swisscom gives us a /60. This should provide 16 /64 but actually only the first one is valid... and the Swisscom router takes it. It probably prevents DHCPv6 from getting to your router because the only available prefix (the /64) is already assigned on the Swisscom router.
As far as I've been able to figure out, our options currently are to turn the router into a transparent bridge/firewall or remove the Swisscom box out of the picture completely.