A method of processing data of a host in an internet protocol television (IPTV) system and the apparatus thereof are disclosed. Herein, the method includes discovering a source internet protocol (IP) address for routing between a card and servers; communicating the servers using address information, wherein the address information is used by the servers to resolve a destination IP address to which to send messages for a targeted card; and routing IP packets from the discovered source IP address to the targeted card by directing the IP packets to a media access control (MAC) address of the targeted card.