I am entering this as a new topic, although I have put this one in before.
I just installed 22 watchguard firewalls for a customer instead of the 22 Max BR1 units I WANTED to sell him, solely because he has three untagged networks at each location, and I was certainly not going to ask him to change everything just so switch to out service.
I am going to be very, very blunt here. This is not really a request…This is a demand. Peplink is the only router I know of that does not allow multiple untagged networks. Any $25 home router does it. Sonicwall, Cisco, linksys, juniper, watchgaurd, dlink, netgear…I defy you to find ANY other router/firewall that does not allow you to create multiple untagged subnets!
I assure you that you are losing a LOT of sales due to this simple limitation! If you are setting up a new location you can use vlans, but hen retrofitting a customer who has multiple subnets now it is just not an option to change their network numbering. For one thing, there ARE devices that do not do vlans.