I have some smart devices that are put on a guest wifi network with no intranet access to isolate them from my main home network on an ASUS RT-AC68u router. As the number of smart devices grow, I wanted to extend the guest wifi network range using ethernet backhaul with another identical ASUS router (RT-AC68u). However, both access point or Aimesh configurations does not work as AP mode does not isolate the guest network from my main network and Aimesh currently does not support guest network on nodes. I believe it is a common problem many people are faced with but I cannot find any viable solution on the web. Please advise if there is any way to achieve that. Thanks in advance,