Bug report
Bug description:
While properties like is_private account for IPv4-mapped IPv6 addresses, such as for example:
>>> ipaddress.ip_address("192.168.0.1").is_private True >>> ipaddress.ip_address("::ffff:192.168.0.1").is_private True
...the same doesn't currently apply to the is_loopback property:
>>> ipaddress.ip_address("127.0.0.1").is_loopback True >>> ipaddress.ip_address("::ffff:127.0.0.1").is_loopback False
At minimum, this inconsistency between different properties is counter-intuitive. Moreover, ::ffff:127.0.0.0/104 is for all intents and purposes a loopback address, and should be treated as such.
For the record, this will now match the behavior of other languages such as Rust, Go and .NET, cf. rust-lang/rust#69772.
CPython versions tested on:
CPython main branch
Operating systems tested on:
Linux