New submission from Pete Wicken <petewic...@gmail.com>:

As alluded to in issue bpo-38655, the behaviour for getting categorising IPv4 
networks is inconsistent with the IANA guideline, which the docs say it follows.

I'm proposing we either change the documentation so that it describes the 
behaviour that should actually be expected, or we rewrite some parts of the 
ipaddress module so that they follow the guidelines.

For the latter, my thoughts would be to actually implement the check table on 
the IANA page 
(https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml).

i.e for a given address, you can ask of it "is_forwardable", 
"is_globally_reachable", etc.

----------
messages: 356265
nosy: Wicken
priority: normal
severity: normal
status: open
title: Solve IPv4 categorisation issues with the ipaddress module

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue38750>
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