68U: Using Dual LAN to work around fried WAN port

Hi, my RT-AC68U's WAN port was fried by a lightning storm yesterday. Fortunately, none of the devices connected to the LAN ports were affected, and the router seems otherwise fine. With most of my devices on an external switch, I do have one LAN port free, and I've determined I can use it as the primary in Dual LAN for the Internet connection instead of the WAN port. It seems to work fine; speeds are good, firewall activity is logged, etc. My one concern is that the WAN port might be better...

68U: Using Dual LAN to work around fried WAN port