Backward Compatibility Re: 202401100645.AYC Re: IPv4 address block

Mon Jan 15 05:15:20 UTC 2024

To my knowledge IPv6 is designed to replace IPv4. Anyone, feel free to
correct me if I'm wrong. There are just short of 4.3 billion IPv4
addresses, where the number of IPv6 addresses is 39 digits long.

Regards,
Christopher Hawker

On Mon, 15 Jan 2024 at 15:18, Abraham Y. Chen <aychen at avinta.com> wrote:

> Hi, Randy:
>
> 1)   " ... unfortunately i already had grey hair in the '90s and was in
> the room for all this,  ...  ":
>
>     My apologies! For an uninitiated, I misread your message as if IPv6
> was originally designed with a plan to assure smooth transition from IPv4.
>
> Regards,
>
>
> Abe (2024-01-14 23:17)
>
>
> On 2024-01-12 17:45, Randy Bush wrote:
>
> Perhaps you are too young to realize that the original IPv6 plan was
> not designed to be backward compatible to IPv4, and Dual-Stack was
> developed (through some iterations) to bridge the transition between
> IPv4 and IPv6? You may want to spend a few moments to read some
> history on this.
>
> ROFL!!!  if there is anything you can do to make me that young, you
> could have a very lucrative career outside of the internet.
>
> hint: unfortunately i already had grey hair in the '90s and was in the
> room for all this, and spent a few decades managing to get some of the
> worst stupidities (TLA, NLA, ...) pulled out of the spec.  at iij, we
> rolled ipv6 on the backbone in 1997.
>
> randy
>
>
>
>
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