Python Requests Mount Not Working on Linux But Works Fine on Windows

Question

I have the following code and when I run it on Windows I can make requests through a specific NIC as said on this answer but when I run it on Arch Linux request goes to timeout.

import requests
from requests_toolbelt.adapters import source

source = source.SourceAddressAdapter('10.100.89.75')

with requests.Session() as session:
    session.mount('http://', source)
    r = session.get("http://ifconfig.me")
    print(r.text)

I get the following error:

Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 600, in get
    return self.request("GET", url, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 587, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 701, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/adapters.py", line 553, in send
    raise ConnectTimeout(e, request=request)
requests.exceptions.ConnectTimeout: HTTPConnectionPool(host='ifconfig.me', port=80): Max retries exceeded with url: / (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7f8e0ab379a0>, 'Connection to ifconfig.me timed out. (connect timeout=None)'))