diff --git a/chaos_monkey/monkey.py b/chaos_monkey/monkey.py
index a71993f7c..17fc17bdd 100644
--- a/chaos_monkey/monkey.py
+++ b/chaos_monkey/monkey.py
@@ -81,8 +81,6 @@ class ChaosMonkey(object):
         if monkey_tunnel:
             monkey_tunnel.start()
 
-        last_exploit_time = None
-
         ControlClient.send_telemetry("state", {'done': False})
 
         self._default_server = WormConfiguration.current_server
@@ -180,7 +178,6 @@ class ChaosMonkey(object):
 
                 if successful_exploiter:
                     self._exploited_machines.add(machine)
-                    last_exploit_time = time.time()
                     ControlClient.send_telemetry('exploit', {'result': True, 'machine': machine.__dict__,
                                                              'exploiter': successful_exploiter.__class__.__name__})
 
@@ -208,8 +205,8 @@ class ChaosMonkey(object):
 
         # if host was exploited, before continue to closing the tunnel ensure the exploited host had its chance to
         # connect to the tunnel
-        if last_exploit_time and (time.time() - last_exploit_time < WormConfiguration.keep_tunnel_open_time):
-            time_to_sleep = WormConfiguration.keep_tunnel_open_time - (time.time() - last_exploit_time)
+        if len(self._exploited_machines) > 0:
+            time_to_sleep = WormConfiguration.keep_tunnel_open_time
             LOG.info("Sleeping %d seconds for exploited machines to connect to tunnel", time_to_sleep)
             time.sleep(time_to_sleep)
 
diff --git a/chaos_monkey/network/info.py b/chaos_monkey/network/info.py
index e438f37b3..0c841dc9f 100644
--- a/chaos_monkey/network/info.py
+++ b/chaos_monkey/network/info.py
@@ -29,6 +29,8 @@ def get_host_subnets():
     for network in ipv4_nets:
         if 'broadcast' in network:
             network.pop('broadcast')
+        for attr in network:
+            network[attr] = network[attr].encode('utf-8').strip()
     return ipv4_nets
 
 
@@ -47,8 +49,7 @@ else:
 
 
     def local_ips():
-        ipv4_nets = get_host_subnets()
-        valid_ips = [network['addr'].encode('utf-8').strip() for network in ipv4_nets]
+        valid_ips = [network['addr'] for network in get_host_subnets()]
         return valid_ips
 
 
diff --git a/monkey_island/cc/services/config.py b/monkey_island/cc/services/config.py
index 6807d5d86..dc9ce6a9e 100644
--- a/monkey_island/cc/services/config.py
+++ b/monkey_island/cc/services/config.py
@@ -282,7 +282,7 @@ SCHEMA = {
                             "title": "Keep tunnel open time",
                             "type": "integer",
                             "default": 60,
-                            "description": "Time to keep tunnel open before going down since last exploit (in seconds)"
+                            "description": "Time to keep tunnel open before going down after last exploit (in seconds)"
                         }
                     }
                 },