A network node (MR/BR node) is configured as a mesh router node in a first wireless network comprised of a plurality of first nodes and as a border router node in a second wireless network comprised of a plurality of second nodes, the second wireless network distinct from the first wireless network. The MR/BR node has a unique first address in the first wireless network and a unique second address in the second wireless network. In this way, the MR/BR node can receive a first communication in the first wireless network via the first address, and transmit the received first communication to at least one of the second nodes in the second wireless network. The MR/BR node can also receive a second communication in the second wireless network via the second address, and transmit the received second communication to at least one of the first nodes in the first wireless network.