bpo-30528: Fix IPv{4,6}Network reverse_pointer

[ekohl]

Previous incorrect result for IPv4Network:

>>> ipaddress.IPv4Network('127.0.0.0/16').reverse_pointer
'0/16.0.0.127.in-addr.arpa'

New result:

>>> ipaddress.IPv4Network('127.0.0.0/16').reverse_pointer
'0.127.in-addr.arpa'

Previous incorrect result for IPv6Network:

>>> ipaddress.IPv6Network('2001:db8::/32').reverse_pointer
'2.3./.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa'

New result:

>>> ipaddress.IPv6Network('2001:db8::/32').reverse_pointer
'8.b.d.0.1.0.0.2.ip6.arpa'

https://bugs.python.org/issue30528

[the-knights-who-say-ni]

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[ekohl]

I've signed the CLA and got a confirmation. Should the CLA not signed label be automatically removed?

[ayharano]

Hello there.

Sorry for the meta posting, but I would like to review this PR.

How can I review it and how can we proceed to backport it to 3.5 (according to Python official docs, ut says that reverse_pointer was new in 3.5)?

[ayharano]

@ekohl , could you include Misc/NEWS.d entry as stated in @bedevere-bot news check? ( No news entry in Misc/NEWS.d or "skip news" label found )

I am not aware how the reviews are distributed in this repo, but I would guess that at least all conflicts must be resolved to proceed.

[ekohl]

@ayharano there was some discussion in the issue so I think there first needs to be a consensus on the solution. I think the best place is to start reading there and get to a solution. We can then implement it.

[github-actions]

This PR is stale because it has been open for 30 days with no activity.