[issue32572] Add the ftplib option, overrides the IP address.

[Hideyuki]

New submission from Hideyuki <studioes at go64.jp>:

Add the ftplib's option, overrides the IP address to be used with the PORT command.
Currently, the PORT command is sending its self IP address.
If the host is connected with NAT, it will not work.
If that command has a NAT external IP address, it is working.
So add an option to overrides the IP address sending with the PORT command.
This is useful when active FTP transfer needed on a 1:1 NAT connected host so like AWS VPC.

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components: Library (Lib)
messages: 310102
nosy: hideyuki
priority: normal
severity: normal
status: open
title: Add the ftplib option, overrides the IP address.
type: enhancement
versions: Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32572>
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