1. A Differentiated Services Code Point Mirroring System for processing IP packet traffic exchanged between wireless devices, which are located onboard an aircraft and served by an aircraft network, and a ground-based Access Network, which exchanges communication signals with ground-based communication network servers, comprising: an IP packet receiver for identifying a Differentiated Services Code Point value stored in a header of an IP packet received by said wireless device; and a Differentiated Services Code Point mirroring process for inserting said identified Differentiated Services Code Point value into the header of an IP packet generated by the wireless device in response to said received IP packet.