`import pyoptsparse` hangs (on local machine) when using a vpn

Description

This feels like an odd one.
I'm running python on my local machine.
When I'm not connected to a certain VPN, I can import pyoptsparse. When I am connected, it hangs on the import command.
This happens both in a python repl and a jupyter notebook (using the same kernel).

The import command stops hanging and succeeds a few moments after disconnecting the vpn.

This seems very odd to me, as I don't know why there would be any network-calling code in pyoptsparse (other than perhaps to check license for certain optimizers?)

Steps to reproduce issue

1. Have pyoptsparse installed successfully - I can run Openmdao problems using IPOPT, for example.
2. Turn on the Pulse Secure VPN so I connect to my lab's servers
3. Open a new, local python repl or notebook
4. import pyoptsparse

Current behavior

it hangs until I disconnect from the VPN

Expected behavior

it imports

Code versions

• Operating System: pop!_os
• Python: 3.10.2
• OpenMPI: n/a
• CGNS: idk what this is
• PETSc: n/a
• Compiler: not relevant?
• This repository: 2.9.2

Reproduce import pyoptsparse in a local Python 3.10.2 REPL and Jupyter kernel with the Pulse Secure VPN connected and disconnected. Trace where the import blocks and determine what causes the VPN-dependent delay; done means the import completes while connected, with a regression check for both environments.