diff --git a/lib/neutron-legacy b/lib/neutron-legacy
index c244e54..ecff3e5 100644
--- a/lib/neutron-legacy
+++ b/lib/neutron-legacy
@@ -798,6 +798,7 @@
 
         local IP_ADD=""
         local IP_DEL=""
+        local IP_UP=""
         local DEFAULT_ROUTE_GW
         DEFAULT_ROUTE_GW=$(ip r | awk "/default.+$from_intf/ { print \$3; exit }")
         local ADD_OVS_PORT=""
@@ -821,9 +822,10 @@
         if [[ "$IP_BRD" != "" ]]; then
             IP_DEL="sudo ip addr del $IP_BRD dev $from_intf"
             IP_ADD="sudo ip addr add $IP_BRD dev $to_intf"
+            IP_UP="sudo ip link set $to_intf up"
         fi
 
-        $IP_DEL; $IP_ADD; $ADD_OVS_PORT; $ADD_DEFAULT_ROUTE
+        $IP_DEL; $IP_ADD; $IP_UP; $ADD_OVS_PORT; $ADD_DEFAULT_ROUTE
     fi
 }