In the process of CAPWAP discovery, an AP (Access Point) performs a DNS lookup to discover the WLC (Wireless LAN Controller). The AP queries for the DNS record CISCO-CAPWAP-CONTROLLER.local to get the IP address of the controller. This is part of the standard procedure for CAPWAP discovery, ensuring that APs can find and connect to a controller in their network environment. References: Implementing and Operating Cisco Service Provider Network Core Technologies source documents or study guide