Match the roaming type to its description: "Client traffic specific to a WLAN is tunneled to a predefined WLC."

The description "Client traffic specific to a WLAN is tunneled to a predefined WLC" aligns perfectly with auto-anchor roaming. In this scenario, when a client roams between access points, its traffic is tunneled from the access point it's connected to, directly to a set, predetermined wireless LAN controller (WLC). This is typically used in environments where seamless connectivity is essential, such as in large campuses or venues where users might frequently move throughout the coverage area.

Auto-anchor roaming is advantageous because it allows for consistent policy enforcement and management of client sessions regardless of the physical access point the client is connected to. This approach is particularly beneficial in scenarios where client mobility needs to be accommodated without needing to change the home WLC as the client moves.

The other types of roaming focus on different mechanisms for client movement through the network, such as intracontroller roaming, which happens within a single WLC's management, and intercontroller roaming, which can involve either Layer 2 or Layer 3 processes that may not involve tunneling to a predefined controller.