If multiple WLCs resolve CISCO-CAPWAP-CONTROLLER.localdomain, what does the LAP send during CAPWAP discovery?

When a Lightweight Access Point (LAP) resolves the DNS entry CISCO-CAPWAP-CONTROLLER.localdomain to multiple IP addresses (representing multiple Wireless LAN Controllers or WLCs), it will send a unicast CAPWAP discovery request to each of those resolved IP addresses. This allows the LAP to discover all available WLCs and then select one to join based on various factors like load, capacity, or pre-configured primary/secondary settings. Sending a unicast request to only the first WLC would limit discovery. Broadcast discovery is typically used when no DNS resolution is available or during initial boot-up on the local subnet. Sending a join request to all WLCs is incorrect; the LAP first discovers, then selects, and finally sends a join request to a single chosen WLC.