Prefix assignment protocol (to be done)

Roaming client, dynamic assignment, /64 or 48 to behind the customer router.

How can we dynamically assign /48 or /64 to behind the customer router?
No clear picture yet.

Administrative boundary

RA on ppp link: assumes "/64 on ppp link".
DHCPv6: assumes multicast routing to discover off-link servers.
Router renumbering: assumes site-local multicast, IPsec key exchange issue, first-time assignment?

PPP extension for prefix assignment (2 years ago): layer violation maybe
New ICMPv6 for prefix solicitation/advertisement?
Retransmission rule
Lifetime management and PPP link disconnection
Authentication - IPsec key exchaneg can be hard