Lucent Technologies Bell Laboratories This document discusses QoS mapping extensions to multilink PPP. The extensions facilitate the mapping of particular flows to a given physical link and with a given PPP class. The extensions are intended to provide more flexible quality of service support for wireless networking environments. This document is the product of the Point-to-Point Protocol Working Group of the Internet Engineering Task Force (IETF). Comments should be submitted to the ietf-ppp@merit.edu mailing list.