fixes

netem.py

@@ -18,7 +18,7 @@ parser.add_argument('-B', '--bandwidth',
                     help='bandwidth to set'
                     )
 parser.add_argument('-D', '--delay',
-                    dest='delay',
+                    dest='delay (in milliseconds)',
                     help='link latency'
                     )
 parser.add_argument('-L', '--loss',
@@ -53,6 +53,7 @@ if args.bandwidth is not None:
     cmd.append(str(args.bandwidth))
 if args.loss is not None:
     cmd.append("loss")
+    cmd.append("random")
     cmd.append(str(args.loss))
 
 subprocess.check_output(cmd,stderr=subprocess.STDOUT)