The idea that it’s just “more bits” it’s wrong, so I’m not sure your assessment is valid. Maybe at the packet level it’s just “more bits”, but at the network level a lot of processes changed. IP assignment, router discovery, etc. are different.
Yes, processes changed. Because you don't need NAT, mainly. Overall it's simpler, with more bits in the addresses.
Yes, processes changed. Because you don't need NAT, mainly. Overall it's simpler, with more bits in the addresses.