IPv6 Pain Experiment

[mpalmer at hezmatt.org (Matt Palmer)]

On Sat, Oct 05, 2019 at 04:36:50PM -0400, bzs at theworld.com wrote:
> 
> On October 4, 2019 at 15:26 owen at delong.com (Owen DeLong) wrote:
>  > 
>  > OKâ?¦ Letâ??s talk about how?
>  > 
>  > How would you have made it possible for a host that only understands 32-bit addresses to exchange traffic with a host that only has a 128-bit address?
> 
> A bit in the header or similar (version field) indicating extending
> addressing (what we call IPv6, or similar) is in use for this packet.

How does that allow the host that only understands 32-bit addresses to
exchange traffic with a host which sets this header bit?

- Matt