RPC method gets called before Start().

I have a GameObject with two components: one is inherited from MonoBehaviour and one from NetworkBehaviour. The Network one receives RPC calls every frame and, once they are received, calls a function in the MonoBehaviour component. What happens is, as I join the game as a clinet, the method in the MonoBehaviour component is called before the Start() was called on that component. In a multiplayer setting, Is there a way to ensure that my components ALWAYS call some method BEFORE doing ANYTHING else?

Maybe I should fire a message inside OnServerStarted()/OnClientStarted in my Network component?