Can I make a networkbehaviour singleton class?

I have been using the following base class for singleton components: using UnityEngine; using System.Collections;

 public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
 {
     protected static T instance;
 
     /**
       Returns the instance of this singleton.
    */
     public static T Instance
     {
         get
         {
             if(instance == null)
             {
                 instance = (T) FindObjectOfType(typeof(T));
 
                 if (instance == null)
                 {
                     Debug.Log(typeof(T) + 
                         " instance is missing.");
                 }
             }
 
             return instance;
         }
     }
 }

Today I tried making a virtually identical class that inherited from NetworkBehavior because I had some networked game manager scripts that I wanted easy access to. So I just switched out MonoBehavior for NetworkBehavior. Things built fine in mlnodevelop, but the editor console immediately gave me. "UNetWeaver error: NetworkBehaviour NetworkSingleton`1 cannot have generic parameters," and reported failure generating network code.

I'm curious what is causing this, and would like to know if there is an easy way implement singleton a singleton base class for network behaviors.