The increase in the number of devices has caused a major issue for the service providers to support the users irrespective of the type of services demanded by them. With the advent of fog computing, a near user evaluation site is available that can lower the burden on the core network by providing cloud-like services to the users. However, handling multiple IoT devices near-site requires fast and media independent handovers. This paper incorporates 802.21a-2012 (TM) into the fog network by overcoming the trust requirement and pre-registration policies of this standard using osmotic computing. The proposed framework uses an Osmotic Absorption Key (OAK) to control the handoffs between the fog layers. The proposed solution is highly flexible and inexpensive in terms of implementation cost for handling handoffs of dynamic IoT devices in Fog networks.