It's both. IPv6 is not an easy migration, and people already have decades of experience squeezing the most they can out of IPv4, so the short-term solutions hav

It's both. IPv6 is not an easy migration, and people already have decades of experience squeezing the most they can out of IPv4, so the short-term solutions have just been to just squeeze IPv4 a little harder until everyone working on IPv6 gets it fully operational.