Prov doesn't provide /64 ipv6. Is it worth the bother?

Question

Computer networks

Do I understand correctly that if the prov provides several IP addresses for hosts, then there is not much point in this? So how do you have to write the address and gateway on each host behind the router? And the gateway for all allocated addresses will be the Provo host, and not my router? And on each host to configure your firewall?

Answer 1

By and large, it doesn’t matter how many addresses the provider has allocated, it can generally allocate 1 for the router, as in ip4. It's just a recommendation or best practice to allocate network/64. Hosts have several ip addresses and all of them are indicated in the packet header, so whether the packet goes through one subnet (has a "white" ip) or goes to another on the router, it matters, but not critical. Another question is that the provider itself has a subnet / 64, and then he is not a provider, or experts do not follow the recommendations. It seems to me that only this can matter in a particular situation.