Lost GUI and "Media disconnected" on OPNsense after backup restore

[AlexOd]

�Hi everyone,
�I am seeking help to recover my OPNsense installation. My network was stable until I restored a configuration backup, and now I am completely lost.
I spend whole day trying to figured out.

�My network was configured with OPNsense as the primary router and my ASUS RT-AX88U Pro acting as an Access Point (AP).
�
While my PC (connected via Ethernet to the OPNsense LAN port) had a stable, working internet connection, the ASUS AP was failing to provide internet access to wireless devices.
�I previously had to reinstall OPNsense entirely because an AI-guided configuration resulted in incorrect settings and system instability.
�I attempted to restore a configuration backup I had saved a few days ago to resolve the ASUS AP connectivity issue.

The Issue:
�Immediately after the restore, I lost all internet connectivity, and I can no longer access the OPNsense Web GUI.
�My PC now reports "Media disconnected" on the LAN interface, even though the hardware and cables were working perfectly moments before the backup restore.
�My OPNsense console confirms my interface assignments are WAN as igc0 and LAN as igc1, but despite these assignments, the system is failing to pass traffic.
�I currently only have access via the local OPNsense console.

My Questions:
�Since the restored backup appears to have broken the interface configuration or firewall rules, what is the best way to clear the bad configuration settings via the console to regain Web GUI access?
�Should I use Option 4 (Reset to factory defaults) in the console? Will this definitively resolve the "Media disconnected" state and restore GUI access?
�What is the best way to safely import only specific sections of a backup in the future to avoid these types of conflicts?

Alex

[AlexOd]

Also forgotten mentioned. I restored a v25 backup onto a fresh OPNsense v26 install, and now my interfaces report "Media disconnected" and the Web GUI is unreachable.
I forgot that it had 25 version.

[patient0]

Did any interfaces change between the backup and when you restored it? Did you reboot after the restore?

[AlexOd]

Did any interfaces change between the backup and when you restored it? Did you reboot after the restore?

Actually I was able to reset to default settings. So I have restored enternet.
Thank you.

Now I have to find why my Asus router dont get enternet from port 3, whereas PC getting enternet thru port 2.

Thank you for reply.

[patient0]

Now I have to find why my Asus router dont get enternet from port 3, whereas PC getting enternet thru port 2.

Is the Asus AP on port 3 on it's own network or on the same LAN the PC? If on the same LAN as the PC, did you createa bridge in OPNsense?

[AlexOd]

Now I have to find why my Asus router dont get enternet from port 3, whereas PC getting enternet thru port 2.

Is the Asus AP on port 3 on it's own network or on the same LAN the PC? If on the same LAN as the PC, did you createa bridge in OPNsense?

No, it's on its own separate network (Lan2 / 192.168.2.1 on port 3), while my PC is on the main LAN (192.168.1.1 on port 2). I haven't created a bridge. The ASUS router is plugged into port 3 via its WAN port, but it's stuck with a pink/orange light and won't pull an IP or pass internet traffic.
AlsI enabled Kea DHCPv4 on Lan2, but the ASUS router (plugged into port 3's WAN port) stays on a pink/orange light, won't take IP, and gets no internet. Is there something special needed for Kea DHCPv4 or firewall rules on a second physical LAN port?"

Sincerely
Alex

[AlexOd]

Also,if I plug the ASUS router into my main LAN (igc1), it grabs internet instantly. But when plugged into igc2 (which I added as an interface in the GUI), it won't pass internet.
Weird

[patient0]

You will of course need a firewall rule on lan2, similar to the main LAN. Per default all traffic is blocked.

I usually clone the main LAN rule, edit the clone and change the interface to the new network (lan2 in your case).