Question 1

Can any IPv6 address be converted to IPv4?

Accepted Answer

Only IPv4-mapped addresses (::ffff:x.x.x.x) and 6to4 addresses (2002::/16) contain embedded IPv4 addresses. Native IPv6 addresses cannot be converted to IPv4 — they're different address spaces.

Question 2

What is a 6to4 address?

Accepted Answer

6to4 is a transition mechanism that embeds an IPv4 address in the IPv6 prefix 2002::/16. For example, IPv4 192.0.2.1 becomes 2002:c000:0201::/48. This allows IPv6 traffic over IPv4 infrastructure.

IPv6 to IPv4.

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