But, other clients that honored their lease lost all access to the LAN.

(TL-R600VPN not supported)Client-to-

NAT continued to function so that any client with a static IP address or clients that continued to use their assigned IP address even after the lease was not renewed would continue to operate normally.

I decided to replace it with something a smidgen closer to an enterprise router (this router) and a TP-Link TL-WA901ND 300Mbps Advanced Wireless N Access Point with Three 4dBi Detachable Antenna, 2.4 to 2.48GHz Frequency for non-Guest Wifi access and bringing the old (now broken router) back into service by disabling DHCP and re-configuring it as an LAN-isolated (guest