Patent ID: 7457253

Claim:
A communication system that supports an IPv6 (Internet Protocol version 6) addressing scheme, comprising: a number of end user stations (hosts) connected over access networks, and routers connected to end user stations over links and configured to send router advertisements to end user stations to support provisioning of IPv6 addresses for the end user stations, wherein at least one of the routers is configured to: send initial router advertisements to an end user station with a controllable and varying frequency during an initial phase, wherein a value is provided indicating a total number of initial router advertisements for the initial phase or a total time period of the initial phase when a link has been established between the mobile host and the router, set varying time intervals to lapse between consecutive initial router advertisements so that during the initial phase, the frequency of sending the initial router advertisements is higher at the beginning of the initial phase and lower at the end of the initial phase, and send router advertisements to the end user station with a fixed periodicity when the initial phase has lapsed corresponding to when the total number of initial router advertisements has been sent or when the total time period of the initial phase has expired.