Hi everyone!
We've recently run into the following issue the past month: After updating (or even rebooting), in some cases but not all, the default gateway is on the wrong interface (usually our management VPN interface, see attached screenshots).
What we've observed:
- Management VPN comes up and works
- Restarting the Management VPN Wireguard service fixes the issue and the default Gateway is correct again
- Rebooting does not seem to fix the issue (on the contrary, rebooting seems to make it reappear)
- The issue has not been observed with Dual WAN setups
The settings we've checked:
- Default gateway switching is enabled (when disabled, WAN would not fail-back after WAN1 came back online again)
- Gateways are properly set up (priority 100 for fiber and 200 for copper WAN), both WAN ports are set as upstream gateways
- Disabling routing in the Wireguard breaks our management VPN connection
Any advice would be much appreciated!