Enterprises rarely switch over from IPv4 to IPv6 in one step. Generally, companies will run dual-stack for a time, where both IPv4 and IPv6 are available on devices. This doesn’t solve most of the problems IPv6 was designed to solve, so we will discuss the benefits and drawbacks of:
- Dual-stack
- NAT44
- Dual-stack Lite
- NAT64/DNS64
- 464xlat
- MAP-T
- MAP-E
- IPv6-Only
Nalini Elkins & Michael Ackermann