Why We Are Not Likely to Transition to IPv6 Any Time Soon

Too Long; Didn't Read

Three years ago, on 25 November 2019, at 15:35 (UTC+1), the world ran out of IPv4 addresses....and nothing happened. RIPE NCC (the institution overseeing global internet resources) have announced that they made a final IPv4 allocation from the last remaining addresses in their available pool. This was supposed to be a big deal. It was the end of an era. Or so we thought. The truth is, the IPv4 address depletion was not nearly as catastrophic as many thought it would be. 10 years later, we still haven't transitioned to IPv6. Why? I can think of several reasons why we haven't transitioned to IPv6 yet: 1.CGNAT is working well enough that there is no immediate need to switch. 2.IPv6 is not backward-compatible with IPv4. 3. Reuse and reallocation of IPv4 addresses prolonged the time before we needed to switch 4. NAT provides security benefits that would be lost in a transition to IPv6.