So I upgrade from 26.1 latest to 26.7.3 today. All seemed to go well but after final reboot, internet connection is not working. Provider is xfinity/ Comcast. The wan interface seems to dhcp but the system log has the following messages:
Interfaces.php: ROUTING: refusing to set interface route on addresses wan(vtnet1)
Error opnsense/interfaces.php ROUTING: not a valid wan interface gateway address: 'missing'
In interfaces:overview the wan shows an ipv4 address and a gateway address.
I did see notes about routing issues and set the tunable net.route.algo.inet.algo to radix4 this had no effect on issue.
This is a virtualized firewall in proxmox that has worked fine for 5 years.
Advice on where to go from here?