update example_topology.py
diff --git a/emuvim/dcemulator/net.py b/emuvim/dcemulator/net.py
index 8379cd3..4bf9224 100755
--- a/emuvim/dcemulator/net.py
+++ b/emuvim/dcemulator/net.py
@@ -5,9 +5,9 @@
import logging
from mininet.net import Dockernet
-from mininet.node import Controller, OVSKernelSwitch, Switch, Docker, Host
+from mininet.node import Controller, OVSSwitch, OVSKernelSwitch, Switch, Docker, Host, RemoteController
from mininet.cli import CLI
-from mininet.log import setLogLevel, info
+from mininet.log import setLogLevel, info, debug
from mininet.link import TCLink, Link
import networkx as nx
from monitoring import DCNetworkMonitor