I’m a homelabber but know next to nothing about IPv6. What I do know, however, is that my ISP, Bell Canada, doesn’t support it. If Bell were to work toward IPv6 support what actually needs to be done?

I imagine all their networking gear would need IPv6 IPs and IPv6-specific routing tables in addition to the IPv4 routing tables (which might need loads of RAM?), customer equipment would need to be updated or replaced and any services that Bell provides would also need to be available via IPv6. What other not obvious changes would need to be made?