NetworkManager Connection Does Not Autoconnect

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

After reboot, interface remains down until manually activated through nmcli or cockpit.

Environment & Reproduction

Run nmcli connection show and inspect connection.autoconnect and autoconnect-priority values.

Root Cause Analysis

Profile autoconnect is disabled, device mismatch exists, or competing profiles take precedence.

Quick Triage

Set nmcli connection modify connection.autoconnect yes and verify interface binding and priority.

Step-by-Step Diagnosis

Capture current profile properties and startup logs before applying changes.

Solution – Primary Fix

Interface comes up automatically on reboot with expected IP and route settings.

Solution – Alternative Approaches

Reboot and run nmcli device status to confirm connected state without manual intervention.

Verification & Acceptance Criteria

Disable unused profiles and standardize naming and binding conventions.

Rollback Plan

Restore prior profile settings if autoconnect change interferes with failover design.

Prevention & Hardening

Manage NetworkManager keyfile profiles centrally using nmstate or Ansible.

Related Errors & Cross-Refs

journalctl -u NetworkManager -b reveals profile selection and activation outcomes.

Related tutorial: View the step-by-step tutorial for rhel-9.

View all rhel-9 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Share connection profiles, device inventory, and boot log excerpts for diagnosis.