After upgrading VyOS from 1.3.0-RC1 to 1.3.0-RC5, I face issues like cannot ping the router.
But the router network is working as I can ping external networks (eg Google.com).
I am new to VyOS and not so familiar with what logs I can check that can help me out to point out the issue.
Is it works from directly connected devices?
Start with excluding the firewall from interfaces.
I can’t add another advice from above information. If you know the problem in ospf - check all needed ospf routes.