A home agent (104, 108) and a foreign agent (110, 114) in a wireless communication system (100) establish (202) a special communications channel (140-154) between themselves, the special communications channel dedicated to messages addressed to multiple mobile nodes. The home agent then detects (206) whether a message received by the home agent is addressed to multiple mobile nodes. When the message is addressed to multiple mobile nodes, the home agent sends (208) the message to the foreign agent through the special communications channel.