Description

After updating Codex CLI to 0.115.0, the Linux bubblewrap sandbox fails with:

bwrap: loopback: Failed RTM_NEWADDR: Operation not permitted

This worked fine before the update. Subagents cannot execute any commands in sandbox mode.

Environment

• OS: Ubuntu 24.04.4 LTS (Noble Numbat)
• Kernel: 6.17.0-19-generic
• Codex version: 0.115.0
• bwrap version: 0.9.0
• bwrap binary: /usr/bin/bwrap (not setuid)

Thread

Uploaded thread: 019cfb76-f176-71d2-b80e-b03ab6bc6a38