Multihops Wireless Access Networks are ad hoc networks connected to Internet through wireless Access Points. They constitute a logical extension of cellular wireless networks to extend the radio covering area in a spontaneous manner in introducing a collaboration among the nodes. They propose a flexible and cheap infrastructure. A client can be contacted and can contact any other host in the Internet. To reach this goal, we propose a solution of micro-mobility management and routing for such hybrid network. This solution uses a virtual backbone collecting the control traffic and minimizing overheads. The mobility management combines both proactive and reactive approach to propose a trade-off between overheads and delays. When a packet arrives from Internet to the AP, the mobile destination is localized in a reactive way. Inversely, a mobile can initiate a communication to the Internet with a proactive solution, without latency. Some mechanisms of route maintenance without any additional overhead are also proposed.