A resource obtaining method performed by a server side, the method comprising the steps of: a.) determining (S 301) whether a number of currently used addresses of an address pool currently used by the server side is higher than a threshold; b.) in case of no in step a.), continuing the determination of step a.); c.) in case yes in step a.): ∘ generating (S 302) a notification message, the notification message including a first action type and a type of a new address pool requested by the server side, the first action type being a request for requesting the new address pool; d.) sending (S 303) the notification message based on a network configuration, NETCONF, protocol to a client; e.) receiving (S 305) a remote procedure call, RPC, message based on the NETCONF protocol from the client, ∘ the RPC message including: ▪ a name of the new address pool, a start address of the new address pool, and an end address of the new address pool; ▪ a second action type, the second action type indicating an action to be performed by the server side of creating the new address pool by the server side according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool, and ▪ a protocol operation type of the RPC message being edit-configuration; f.) creating (S 306) the new address pool according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool. a.) determining (S 301) whether a number of currently used addresses of an address pool currently used by the server side is higher than a threshold; b.) in case of no in step a.), continuing the determination of step a.); c.) in case yes in step a.): ∘ generating (S 302) a notification message, the notification message including a first action type and a type of a new address pool requested by the server side, the first action type being a request for requesting the new address pool; ∘ generating (S 302) a notification message, the notification message including a first action type and a type of a new address pool requested by the server side, the first action type being a request for requesting the new address pool; d.) sending (S 303) the notification message based on a network configuration, NETCONF, protocol to a client; e.) receiving (S 305) a remote procedure call, RPC, message based on the NETCONF protocol from the client, ∘ the RPC message including: ▪ a name of the new address pool, a start address of the new address pool, and an end address of the new address pool; ▪ a second action type, the second action type indicating an action to be performed by the server side of creating the new address pool by the server side according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool, and ▪ a protocol operation type of the RPC message being edit-configuration; ∘ the RPC message including: ▪ a name of the new address pool, a start address of the new address pool, and an end address of the new address pool; ▪ a second action type, the second action type indicating an action to be performed by the server side of creating the new address pool by the server side according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool, and ▪ a protocol operation type of the RPC message being edit-configuration; ▪ a name of the new address pool, a start address of the new address pool, and an end address of the new address pool; ▪ a second action type, the second action type indicating an action to be performed by the server side of creating the new address pool by the server side according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool, and ▪ a protocol operation type of the RPC message being edit-configuration; f.) creating (S 306) the new address pool according to the start address of the new address pool, the end address of the new address pool and the name of the new address pool.