Mobility is becoming ubiquitous now-a-days; there have been tremendous advances in the next generation mobile communication systems recently, thereby, engendering the need to support all the advancements arising from new theories, algorithms, architectures, standards and protocols. Mobility management has been a growing concern in IPv6 with numerous problems originating from roaming between IPv6 access networks and IPv4 access networks owing to ever-growing research. This paper attempts to succinctly address the enhancement(s) required for IPv6 mobility management protocols for future access networks. Further, the solutions for roaming issues between IPv6 and IPv4 networks have also been highlighted.