A wireless repeater device and a configuration method for the same are provided. The wireless repeater device is configured to: connect to a target network provided by a DHCP server; send a detection packet to the target network to confirm transmission modes supported by the DHCP server; confirm whether a request for dynamically obtaining an IP address from a client device is received; forward a request packet to the DHCP server, which instructs the DHCP server to respond in a first transmission mode; receive a response to the request from the DHCP server and forward it to the client device; confirm whether the request from the client device is still received, if so, modify the request packet and forward it to the DHCP server, and the request packet is modified to instruct the DHCP server to respond in a second transmission mode.