Only store and connect to NODE_NETWORK nodes

src/net.cpp

@@ -1596,6 +1596,10 @@ void ThreadOpenConnections()
             if (IsLimited(addr))
                 continue;
 
+            // only connect to full nodes
+            if (!(addr.nServices & NODE_NETWORK))
+                continue;
+
             // only consider very recently tried nodes after 30 failed attempts
             if (nANow - addr.nLastTry < 600 && nTries < 30)
                 continue;