Wireless ad hoc networks have become increasingly popular due to the numerous applications they can provide, spawning dozens of routing protocols, in order to cope with the demand. To name a few examples, there are Wireless Mesh Networks, Vehicular Networks and Mobile Ad hoc Networks. This work studies the interoperability for wireless ad hoc routing protocols. Interoperability works in such a way that two or more distinct networks, can relay messages to a neighbour network, even if they are running different routing protocols. Our proposal focuses on a proactive approach for the Strip Interoperability mechanism, which has proven to bridge heterogeneous networks using only layer 3 protocols. Moreover, a comparison is performed with the previous mechanism through a Case Study, which delivers an improvement over network metrics. The testbed runs on Ubuntu Linux and wireless ad hoc routing protocols implementations of OLSR and BMX6, both using IPv6 and related protocols