diff --git a/plugins/network/network.py b/plugins/network/network.py
index 2fb1aef..090ee41 100644
--- a/plugins/network/network.py
+++ b/plugins/network/network.py
@@ -30,7 +30,10 @@ import cryptobox.plugins.base
 
 ## specify (in seconds), how long we should wait before redirecting and ip change
 REDIRECT_DELAY = 10
-CHANGE_IP_DELAY = 2 
+CHANGE_IP_DELAY = 5 
+## default network interface (may be overriden by the "interface" setting of the
+## network plugin in cryptobox.conf
+DEFAULT_INTERFACE = "eth0"
 
 class network(cryptobox.plugins.base.CryptoBoxPlugin):
 	"""The network feature of the CryptoBox.
@@ -80,7 +83,7 @@ class network(cryptobox.plugins.base.CryptoBoxPlugin):
 				except IOError:
 					self.cbox.log.warn("Could not write plugin configuration")
 				self.__prepare_form_data()
-				return "form_network"
+				return "empty"
 			else:
 				self.cbox.log.warn("failed to change IP address to: %s" % new_ip)
 				self.hdf["Data.Warning"] = "Plugins.network.InvalidIP"
@@ -149,7 +152,7 @@ class network(cryptobox.plugins.base.CryptoBoxPlugin):
 			stdout = subprocess.PIPE,
 			args = [
 				root_action_plug.IFCONFIG_BIN,
-				root_action_plug.IFACE])
+				self.__get_interface()])
 		(stdout, stderr) = proc.communicate()
 		if proc.returncode != 0:
 			return (0, 0, 0, 0)
@@ -180,8 +183,9 @@ class network(cryptobox.plugins.base.CryptoBoxPlugin):
 					self.cbox.prefs["Programs"]["CryptoBoxRootActions"],
 					"plugin",
 					os.path.join(self.plugin_dir, "root_action.py"),
-					new_ip,
-					"change_ip"])
+					"change_ip",
+					self.__get_interface(),
+					new_ip])
 			proc.wait()
 			if proc.returncode != 0:
 				self.cbox.log.warn("failed to change IP address: %s" % new_ip)
@@ -193,4 +197,14 @@ class network(cryptobox.plugins.base.CryptoBoxPlugin):
 		thread.start()
 		# TODO: how could we guess, if it failed?
 		return True
+	
+
+	def __get_interface(self):
+		"""Return the name of the configured network interface
+		"""
+		if "interface" in self.defaults:
+			return self.defaults["interface"]
+		else:
+			return DEFAULT_INTERFACE
+
 
diff --git a/plugins/network/root_action.py b/plugins/network/root_action.py
index c6d6d1e..37be472 100755
--- a/plugins/network/root_action.py
+++ b/plugins/network/root_action.py
@@ -29,30 +29,26 @@ PLUGIN_TYPE = "cryptobox"
 
 IFCONFIG_BIN = "/sbin/ifconfig"
 GWCONFIG_BIN = "/sbin/route"
-#TODO: put IFACE in config
-IFACE = "eth1"
 
 import subprocess
 import re
 import sys
-import os
 
-def __changeIP(address):
-	match = re.search(r'^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$', args[0])	
+def __changeIP(interface, address):
+	match = re.search(r'^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$', address)	
 	## did we match? If yes, then: are there wrong values inside?
 	if not match or [e for e in match.groups() if int(e) > 255]:
-		sys.stderr.write("%s: illegal argument (%s)\n" % (self_bin, args[0]))
+		sys.stderr.write("%s: illegal argument (%s)\n" % (self_bin, address))
 		sys.exit(1)
-	
 	proc = subprocess.Popen(
 		shell = False,
-		args = [IFCONFIG_BIN, IFACE, args[0]])
+		args = [IFCONFIG_BIN, interface, address])
 	proc.wait()
-	sys.exit(proc.returncode)
+	return proc.returncode == 0
 
 
 def __changeGW(address):
-	sys.exit(23)
+	return False
 
 
 if __name__ == "__main__":
@@ -66,8 +62,8 @@ if __name__ == "__main__":
 	
 	try:
 		if args[0] == "change_ip":
-			if len(args) != 2: raise "InvalidArgNum"
-			result = __changeIP(args[1])
+			if len(args) != 3: raise "InvalidArgNum"
+			result = __changeIP(args[1], args[2])
 		elif args[0] == "change_gw":
 			if len(args) != 2: raise "InvalidArgNum"
 			result = __changeGW(args[1])