I am setting up an HA Multi-WAN config, and I'm running into an issue where I cannot access the internet from my WAN1 (WAN2 works fine). I noticed that pings are working if I do a ping test on the firewall over the WAN interface, but not when I do the same thing using the WAN VIP (no matter which IP address I'm using for the VIP). I suspect that this is some sort of routing issue, though that doesn't really explain why WAN2 works with the same LAN rules applied. I've attached an image of all of my LAN rules. At the very least, I'm hoping to eliminate this as a potential issue.
I have default GW switching on, and disable reply-to is checked as well. In the screenshot, .16.252 is my physical LAN addr, and .16.251 is my VIP LAN addr.
Any help would be appreciated!