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You need to be a bit careful with terminology, IPv4-compatible and IPv4-mapped are different, i.e. ::/96 vs. ::ffff:0:0/96. The former (compatible) are not in
by brewmarche 1y ago
You need to be a bit careful with terminology, IPv4-compatible and IPv4-mapped are different, i.e. ::/96 vs. ::ffff:0:0/96.
The former (compatible) are not in use anymore, they were specified in an old tunnelling RFC. The latter (mapped) are used for sockets that bind to both IPv4 and IPv6.
There are even more ways to include IPv4 addresses in IPv6 ones (NAT64, 6to4, ...)