1. A method comprising: receiving, at a management controller of a host system, a deployment template from a management system coupled to the management controller, wherein the deployment template is received out of band from a processing device of the host system, and wherein the deployment template includes a first virtual network interface card definition for a first virtual network interface card for use by a first virtual machine instantiated on the host system; partitioning, by the host system, a first networking device of the host system with a first virtual network partition based upon the deployment template prior to launching a virtual machine manager on the host system, wherein the first virtual network partition is associated with the first virtual network interface card definition; receiving, at the management controller, attribute data, wherein the attribute data includes a first attribute associated with the first virtual network interface card; loading, by the management controller, the first networking device with the attribute data prior to launching the virtual machine manager, wherein the first attribute preconfigures the first networking device to implement the first virtual network interface card on the first virtual network partition; launching, by the first processing device, the virtual machine manager on the host system; querying, by the virtual machine manager, the first network device to determine if the first network device includes the first attribute; reading, by the virtual machine manager, the first attribute from the first networking device; assigning, by the host system, the first virtual network interface card to the first virtual network partition; and configuring a virtual switch associated with the virtual machine manager to associate the first virtual machine with the first virtual network interface card.