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A comment on How bad is IPv4 address exhaustion?. Parent comment

Re:How bad is IPv4 address exhaustion? by chatmasta on Thursday February 15, 2018 @09:28AM (#16384201)
If I understand what you're suggesting, this is basically how NAT64 [0] works to provide backwards compatibility to IPv6 (tunneling IPv4 over IPv6). It uses the first 32 bytes of the IPv6 address to store the IPv4 value.

[0] https://en.wikipedia.org/wiki/NAT64

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Re:How bad is IPv4 address exhaustion? by djrogers on Thursday February 15, 2018 @09:53AM (#16384417)
Pedantic comment here, but NAT64 doesn’t involve any tunneling - it’s pure address translation handled by an edge box, whereas tunneling involves encapsulation.
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Re:How bad is IPv4 address exhaustion? by chatmasta on Thursday February 15, 2018 @09:57AM (#16384466)
True, I should have been more precise.

Although there is technically no packet-level encapsulation, from a mathematical perspective you may consider the IPv4 bits "encapsulated" within the IPv6 bits.

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