Codex CLI request hangs on network change (VPN disconnect)

What version of Codex CLI is running?

0.115.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.4

What platform is your computer?

_No response_

What terminal emulator and version are you using (if applicable)?

_No response_

What issue are you seeing?

CLI stays in "working" state and does not complete or fail visibly on network change or VPN disconnect.

What steps can reproduce the bug?

Steps to reproduce:

1. Connect to VPN
2. Start a Codex CLI request that requires network access
3. Disconnect VPN before the request completes
4. Observe the CLI state

What is the expected behavior?

The CLI should either:

• fail fast with a clear network/connectivity error.
• abort the request.
• or retry/re-establish transport when possible.

Additional information

_No response_