Prefix delegation and routes: what to do?

Question

Computer networks

Dobroden.
ID: there is a certain vlan, there is a server with radvd and isc-dhcp-server, there are a number of client devices.
Clients receive server ipv6 addresses and prefixes (by dhcp, because fixed address prefixes are also needed).
The essence of the problem is this:
The client receives its prefix and address, distributes addresses from the prefix to its clients, but what about routes? After all, how will devices know how to send packets to "client clients"? How to solve this problem correctly?


How, for example, will the route from Alice to Bob be built?

Answer 1

I do not exploit IPv6, so my answer may be wrong.
As far as I know, in this case there are no special differences from IPv4 - if one of the hosts does not know the route to the network with an unfamiliar prefix, it will send it to the Default Gateway.

Answer 2

When allocating a prefix to a CE router, the PE router immediately writes a route to the allocated prefix through this CE router.
The CE router defaults to PE, and attaches the received prefixes to the LAN interfaces.
End hosts generally only have a default towards their router.
Where do you see the problem?