explicit not found for non staked nodes

llarp/dht/messages/findrouter.cpp

@@ -35,6 +35,12 @@ namespace llarp
       Key_t peer;
       // check if we know this in our nodedb first
       RouterContact found;
+      if(!dht.GetRouter()->ConnectionToRouterAllowed(K))
+      {
+        // explicitly disallowed by network
+        replies.emplace_back(new GotRouterMessage(k, txid, {}, false));
+        return true;
+      }
       if(dht.GetRouter()->nodedb()->Get(K, found))
       {
         replies.emplace_back(new GotRouterMessage(k, txid, {found}, false));
@@ -166,6 +172,12 @@ namespace llarp
       Key_t k{K};
       if(exploritory)
         return dht.HandleExploritoryRouterLookup(From, txid, K, replies);
+      else if(!dht.GetRouter()->ConnectionToRouterAllowed(K))
+      {
+        // explicitly disallowed by network
+        replies.emplace_back(new GotRouterMessage(k, txid, {}, false));
+        return true;
+      }
       else if(dht.Nodes()->HasNode(k))
       {
         found = dht.Nodes()->nodes[k].rc;