This script uses UPnP to reconnect the FRITZ!Box.
Tested with FRITZ!OS 7.12 on FRITZ!Box 6490 Cable and FRITZ!OS 7.27 on FRITZ!Box 6591 Cable.
Either install the requests library manually by running pip install requests. Or in case you have pipenv installed run pipenv install in the project folder (ideally in a virtualenv managed by pyenv):
$ pipenv install
Courtesy Notice: Pipenv found itself running within a virtual environment, so it will automatically use that environment, instead of creating its own for any project. You can set PIPENV_IGNORE_VIRTUALENVS=1 to force pipenv to ignore that environment and create its own instead. You can set PIPENV_VERBOSITY=-1 to suppress this warning.
Pipfile.lock (b1592e) out of date, updating to (a290a1)...
Locking [dev-packages] dependencies...
Locking [packages] dependencies...
Building requirements...
Resolving dependencies...
✔ Success!
Updated Pipfile.lock (a290a1)!
Installing dependencies from Pipfile.lock (a290a1)...
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To activate this project's virtualenv, run pipenv shell.
Alternatively, run a command inside the virtualenv with pipenv run.
% python reconnect.py
<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<s:Body>
<u:ForceTerminationResponse xmlns:u="urn:schemas-upnp-org:service:WANIPConnection:2"></u:ForceTerminationResponse>
</s:Body>
</s:Envelope>
Idea from Ferry Boender: https://www.electricmonk.nl/log/2016/07/05/exploring-upnp-with-python/