[favflam]

My ISP no longer allows port-forwarding of ipv4 addresses as 1 public ip is shared amongst many ISP customers. This is due to a migration to MAP-E.

IPV6 is pretty much my only choice for hosting stuff in offices and at home.

Is MAP-E becoming prevalent?

[rendaw]

I feel like lots of providers in Japan are using it now. MAP-E is awful, it doesn't use typical IPv6 acquisition methods and the ipv4 address/allowed forwarding ports are calculated based on the IPv6 address (using a public/fixed table?).