1. A method, comprising: receiving at a load balancer in a network environment, a packet destined to an application executing at a plurality of servers in the network, wherein each server comprises a plurality of processors configured to process the packet; selecting, by the load balancer, a specific one of the servers to forward the packet; retrieving, by the load balancer, an L7 session identifier (ID) from the packet, wherein the L7 session ID identifies a particular application layer session corresponding to the application; generating, by the load balancer, a hash from at least the L7 session ID, wherein the hash indicates a specific processor in the plurality of processors in the selected server; inserting the hash into a header of the packet; and forwarding the packet with the hash to the selected server, wherein the specific processor indicated by the hash processes the packet in the selected server.