Connection Resets from Specific Source

[nshobe]

Describe the bug

When installing packages from pypi we're seeing intermittent connection resets/failures to download or even query for packages. This seems to be happening across all our internal org when coming out of a specific location. We've done what we can to inspect the drops with our networking team but there's no indication of blocking happening at our firewalls, or issues with our provider. We do see tcp resets, seemingly initiated by the endpoint.

The specific endpoints we see lots of resets from:

• 104.17.254.182
• 104.17.255.182
• 151.101.192.223
• 151.101.0.233
• 162.247.243.20

And our public facing IP is:

• 192.149.76.131

The behavior is erratic enough that simply retrying several times can lead to eventual success, but for anything
Expected behavior

pip install functions without networking failures
To Reproduce

This will be very difficult to reproduce outside our networks I fear. But it's easily reproduced on our end every time we install a python package with a large list of dependencies.

My Platform

We're pretty much exclusively Linux as a source. Source python versions are 3.7 and 3.11 though we've reproduced in other versions as well. Pip versions on clients seeing this issue range from 18 to latest.
Additional context