[uknof] IPv6 and flat /48's

[Brian Candler]

I have now dealt with two UK providers who, when asked to add IPv6 to a 
business connection, have insisted on configuring a flat /48 on the CPE 
LAN port.

I was expecting them to configure a /64 interconnect on the LAN port, 
plus a /48 static route pointing to the customer's own router or 
firewall - or possibly DHCP prefix delegation.

As far as I can see, a flat /48 is going to require the customer to run 
NDP proxying for every block of /64 they use internally; and the CPE 
will end up maintaining separate NDP entries for every device inside the 
customer's network.

It seems broken by design to me. Am I right, or is this considered a 
reasonable way to interconnect these days?

Is it just because these ISPs don't understand IPv6, or they don't want 
to deal with managing static routes on the CPE?

Thanks,

Brian.