diff --git a/p4app/controller.py b/p4app/controller.py
index 9eca422..a8b0bc0 100644
--- a/p4app/controller.py
+++ b/p4app/controller.py
@@ -92,19 +92,6 @@ class L2Controller(object):
 
         return addr
 
-    @staticmethod
-    def add_host_ips(host, net, ipaddr, dev):
-        subprocess.call(["mx", host, "ip", "addr", "flush", "dev", dev])
-        for v6dev in [ "lo", "default", "all", dev ]:
-            subprocess.call(["mx", host, "sysctl", "net.ipv6.conf.{}.disable_ipv6=0".format(v6dev)])
-
-        # Set down & up to regain link local address
-        subprocess.call(["mx", host, "ip", "link", "set", dev, "down"])
-        subprocess.call(["mx", host, "ip", "link", "set", dev, "up"])
-
-        # Now add global address
-        subprocess.call(["mx", host, "ip", "addr", "add", ipaddr, "dev", dev])
-
     def init_ndp(self):
         """ initialise neighbor discovery protocol"""
 
@@ -186,7 +173,22 @@ class L2Controller(object):
             net    = ipaddress.ip_network(v6route['net'])
             ipaddr = net[1]
 
-            self.add_host_ips(host, net, ipaddr, dev)
+            self.add_host_ips(host, str(net), str(ipaddr), dev)
+
+    @staticmethod
+    def add_host_ips(host, net, ipaddr, dev):
+        log.debug("Config host: {} {}->{} on {}".format(host, net, ipaddr, dev)
+
+        subprocess.call(["mx", host, "ip", "addr", "flush", "dev", dev])
+        for v6dev in [ "lo", "default", "all", dev ]:
+            subprocess.call(["mx", host, "sysctl", "net.ipv6.conf.{}.disable_ipv6=0".format(v6dev)])
+
+        # Set down & up to regain link local address
+        subprocess.call(["mx", host, "ip", "link", "set", dev, "down"])
+        subprocess.call(["mx", host, "ip", "link", "set", dev, "up"])
+
+        # Now add global address
+        subprocess.call(["mx", host, "ip", "addr", "add", ipaddr, "dev", dev])
 
     def debug_print_pkg(self, pkg, msg="INCOMING"):
         log.debug("{}: {}".format(msg, pkg.__repr__()))