The Internet of Things (IoT) is a model for connecting objects to exchange information between objects and link to Internet services. However, not all network devices can communicate directly with the Internet due to various conditions such as deployment costs or certain applications in edge computing or clusters of unmanned aerial vehicles (UAVs). In these scenarios, nodes can use Internet-connected nodes or base stations as gateways to process and communicate with Internet services. For out-of-range nodes in wireless wide-area applications, an ad hoc routing protocol is suitable to extend the range, enhance mobility, and flexibility of application networks. This paper proposes experiments for some ad hoc routing protocols to measure service of quality parameters in the context of a group of unmanned aerial vehicles transferring data to base stations through Flying Ad-hoc Networks (FANET) using ad-hoc routing protocols. It also proposes probabilistic mechanisms to choose paths at intermediate nodes that can apply to any protocol that has multipath capability. AODV is chosen for adding multipath capabilities and the probabilistic mechanism in packet transmission to evaluate network performance. Numerical analysis shows that the probabilistic mechanism in path selection has improved the stability of ad hoc routing protocols, while traditional protocols are almost incapable of meeting the severe mobility requirements of IoT-based networks such as FANETs.