I don't know what ISP the OP is using, but Singtel did exactly this. I got a /64 with 6rd. It was quite horrible and the main reason I switched ISP's. Now I have a static /48, which is what all ISP's should be doing in my opinion.
Re:IPv6 Is a Nightmare
by AbacusAvenger on Thursday November 05, 2020 @01:02PM
(#25000402)
They only announce a /64 prefix via RA (with no DHCPv6 or DHCPv6-PD), so address assignments are via SLAAC. For that ISP (Wave G), I use NDP proxying to allow the LAN side to utilize those addresses as well.
That is amazingly shitty.
Re:IPv6 Is a Nightmare
by AbacusAvenger on Thursday November 05, 2020 @03:26PM
(#25001626)
Yes, their IPv6 support has been mediocre.
The big advantage to Wave G is that they have symmetrical gigabit download/upload rates. Comcast, on the other hand, provides gigabit download rates but ~30-40Mbit upload rates.
Do you mean your ISP does not give you a larger block than a /64 ? If so, name and shame please. Otherwise, you don't need your ISP to support prefix delegation. If they give you a larger block than a /64 then your router is the one that delegates prefixes within your LAN.