RFC 9637 not implemented by ipaddress module

[csirmazbendeguz]

Bug report

Bug description:

>>> import ipaddress
>>> ip_address = ipaddress.ip_address("3fff::")
>>> ip_address.is_global
True

RFC 9637 registered the address block 3fff::/20 as NOT globally reachable in the IANA IPv6 Special-Purpose Address Registry, but the ipaddress module doesn't respect this.

CPython versions tested on:

3.11

Operating systems tested on:

macOS

Linked PRs

• gh-124217: Add RFC 9637 reserved IPv6 block 3fff::/20 #124240
• [3.13] gh-124217, ipaddress: Add RFC 9637 reserved IPv6 block 3fff::/20 (GH-124240) #124282
• [3.12] gh-124217, ipaddress: Add RFC 9637 reserved IPv6 block 3fff::/20 (GH-124240) #124283

[y5c4l3]

Added it to reserved blocks and unit tests: #124240

[ZeroIntensity]

@vstinner the 3.13 backport PR is still open, are we sure this should be closed?

[vstinner]

@vstinner the 3.13 backport PR is still open, are we sure this should be closed?

It's easier for me to close the issue, to help me tracking what has been done or not.

The 3.13 branch is blocked until Python 3.13 final release. After that, all 3.13 changes will be merged one by one.