Greeting again. I'm trying to get this to work. I followed the instructions here: https://docs.opnsense.org/manual/how-tos/multiwan.html
I have 2 WANs: Mediacom and TMobile. I want Mediacom to be the default.
Everything seemed to go smoothly until I set the Gateway in LAN1 to WANGROUP (the name of my Gateway Group) in the Pass All firewall rule. When I apply changes, I lose internet. If I change it back to "default", internet is restored. Right now, I'm only working on LAN1 (192.168.2.1/24).
I can post screenshots for anything that you think may help. Thanks
I posted this question on another board and was told not to use a group so I'm giving it a try.
For anyone playing with this, make sure you uncheck Sticky Connections in Firewall -> Advanced if your backup WAN is metered.
My understanding is that 'sticky connections' is for load-balancing use cases (so all connections to a web server are established via 1 gateway).
This is not your case.
There's also an entire section on metered ISPs in the guide: https://docs.opnsense.org/manual/how-tos/multiwan.html#failover-and-failback-states (https://docs.opnsense.org/manual/how-tos/multiwan.html#failover-and-failback-states)