An apparatus and method for a dynamically extensible virtual switch. An apparatus or virtual switch includes at least one router and a data structure. The router utilizes the data structure to organize a connection between one or more virtual network interface cards (VNICs) to form a virtual network. The virtual switch also identifies a VNIC node of a data frame by its unique identifier, utilizes the unique identifier to index a collection of elements to retrieve a pointer to a virtual network head, and forwards the data frame to all VNIC nodes in a VNIC node listing associated with the virtual network head except for a VNIC node that relates to the unique identifier.