New CLI bwrap sandbox fails before shell: RTM_NEWADDR loopback Operation not permitted

What version of Codex CLI is running?

0.124

What subscription do you have?

Pro 5x

Which model were you using?

All

What platform is your computer?

Linux

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

None

What issue are you seeing?

Every exec command fails before bash starts:

bwrap: loopback: Failed RTM_NEWADDR: Operation not permitted

Expected:
Local commands should run, or sandbox should be disabled when full permissions
are granted.

Regression:
Reverting to Codex CLI 0.123 fixes it.

What steps can reproduce the bug?

Any attempt to access internal computer files.

What is the expected behavior?

Access

Additional information

Important. Regressing to 0.123 fixes the issue but doesn't allow the use of GPT 5.5