We understand now that Mobile IPv6 is the future and the solution to the lack of IP addresses and the increase of routing tables size. However this new version of the protocol IP shows limitations that might be corrected by the use of many extensions such as RRP, HMIPv6 and Fast Handovers.

For example, thanks to the combination of HMIPv6 and FMIPv6 we can reach a more optimal routing and a signaling reduction can be achieved.