diff --git a/txupnp/__init__.py b/txupnp/__init__.py
index c377ede..0106af1 100644
--- a/txupnp/__init__.py
+++ b/txupnp/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.0.1a3"
+__version__ = "0.0.1a4"
 __name__ = "txupnp"
 __author__ = "Jack Robison"
 __maintainer__ = "Jack Robison"
diff --git a/txupnp/cli.py b/txupnp/cli.py
index a52e72b..3bbfd12 100644
--- a/txupnp/cli.py
+++ b/txupnp/cli.py
@@ -1,4 +1,3 @@
-import sys
 import argparse
 import logging
 from twisted.internet import reactor, defer
@@ -20,11 +19,13 @@ def get_external_ip(u, *_):
 
 @defer.inlineCallbacks
 def list_mappings(u, *_):
-    print(u.get_debug_info(include_gateway_xml=True))
     redirects = yield u.get_redirects()
-    print("found {} redirects".format(len(redirects)))
-    for redirect in redirects:
-        print("\t", redirect)
+    ext_ip = yield u.get_external_ip()
+    for (ext_host, ext_port, proto, int_port, int_host, enabled, desc, lease) in redirects:
+        print("{}:{}/{} --> {}:{} ({}) (expires: {}) - {} ".format(
+            ext_host or ext_ip, ext_port, proto, int_host, int_port, "enabled" if enabled else "disabled",
+            "never" if not lease else lease, desc)
+        )
 
 
 cli_commands = {
diff --git a/txupnp/ssdp.py b/txupnp/ssdp.py
index 48f513d..e7f4397 100644
--- a/txupnp/ssdp.py
+++ b/txupnp/ssdp.py
@@ -90,13 +90,14 @@ class SSDPProtocol(DatagramProtocol):
             return
         if packet._packet_type == packet._OK:
             log.debug("%s:%i replied to our m-search with new xml url: %s", address[0], address[1], packet.location)
-        else:
-            log.debug("%s:%i notified us of a service type: %s", address[0], address[1], packet.st)
-        if packet.st not in map(lambda p: p['st'], self.devices):
-            self.devices.append(packet.as_dict())
-            log.debug("%i device%s so far", len(self.devices), "" if len(self.devices) < 2 else "s")
-            if address[0] in self.discover_callbacks:
-                self._sem.run(self.discover_callbacks[address[0]][0], packet)
+            if packet.st not in map(lambda p: p['st'], self.devices):
+                self.devices.append(packet.as_dict())
+                log.debug("%i device%s so far", len(self.devices), "" if len(self.devices) < 2 else "s")
+                if address[0] in self.discover_callbacks:
+                    self._sem.run(self.discover_callbacks[address[0]][0], packet)
+        elif packet._packet_type == packet._NOTIFY:
+            log.debug("%s:%i sent us a notification (type: %s), url: %s", address[0], address[1], packet.nts,
+                      packet.location)
 
 
 class SSDPFactory(object):
diff --git a/txupnp/ssdp_datagram.py b/txupnp/ssdp_datagram.py
index ad440ba..dbc8e8f 100644
--- a/txupnp/ssdp_datagram.py
+++ b/txupnp/ssdp_datagram.py
@@ -50,6 +50,14 @@ class SSDPDatagram(object):
             'man',
             'mx',
         ],
+        _NOTIFY: [
+            'host',
+            'location',
+            'nt',
+            'nts',
+            'server',
+            'usn',
+        ],
         _OK: [
             'cache_control',
             # 'date',
diff --git a/txupnp/upnp.py b/txupnp/upnp.py
index 8a8df40..3f6f4f9 100644
--- a/txupnp/upnp.py
+++ b/txupnp/upnp.py
@@ -73,7 +73,7 @@ class UPnP(object):
 
     def add_port_mapping(self, external_port, protocol, internal_port, lan_address, description, lease_duration):
         return self.commands.AddPortMapping(
-            NewRemoteHost=None, NewExternalPort=external_port, NewProtocol=protocol,
+            NewRemoteHost="", NewExternalPort=external_port, NewProtocol=protocol,
             NewInternalPort=internal_port, NewInternalClient=lan_address,
             NewEnabled=1, NewPortMappingDescription=description,
             NewLeaseDuration=lease_duration