A hybrid network communication method, wherein the method comprises: receiving, by a gateway device , a first association request of a first multimode device through a first physical interface , wherein the first association request comprises a Media Access Control, MAC, address of a second physical interface , the first multimode device supports a first communication protocol and a second communication protocol, the first physical interface is a physical interface of the gateway device , the second physical interface is a physical interface of the first multimode device, and a protocol type used by the first physical interface and the second physical interface is the first communication protocol; receiving, by the gateway device , a second association request of the first multimode device through a third physical interface , wherein the second association request comprises a MAC address of a fourth physical interface, the third physical interface is a physical interface of the gateway device , the fourth physical interface is a physical interface of the first multimode device, and a protocol type used by the third physical interface and the fourth physical interface is the second communication protocol; obtaining, by the gateway device , an Internet Protocol version 6, IPv6, address of the first multimode device; and recording, by the gateway device , a first correspondence and a second correspondence, wherein the first correspondence comprises a correspondence among the IPv6 address of the first multimode device, the MAC address of the second physical interface , and the first physical interface , and the second correspondence comprises a correspondence among the IPv6 address of the first multimode device, the MAC address of the fourth physical interface, and the third physical interface . receiving, by a gateway device , a first association request of a first multimode device through a first physical interface , wherein the first association request comprises a Media Access Control, MAC, address of a second physical interface , the first multimode device supports a first communication protocol and a second communication protocol, the first physical interface is a physical interface of the gateway device , the second physical interface is a physical interface of the first multimode device, and a protocol type used by the first physical interface and the second physical interface is the first communication protocol; receiving, by the gateway device , a second association request of the first multimode device through a third physical interface , wherein the second association request comprises a MAC address of a fourth physical interface, the third physical interface is a physical interface of the gateway device , the fourth physical interface is a physical interface of the first multimode device, and a protocol type used by the third physical interface and the fourth physical interface is the second communication protocol; obtaining, by the gateway device , an Internet Protocol version 6, IPv6, address of the first multimode device; and recording, by the gateway device , a first correspondence and a second correspondence, wherein the first correspondence comprises a correspondence among the IPv6 address of the first multimode device, the MAC address of the second physical interface , and the first physical interface , and the second correspondence comprises a correspondence among the IPv6 address of the first multimode device, the MAC address of the fourth physical interface, and the third physical interface . <EOS>