@@ -800,7 +800,9 @@ function _move_neutron_addresses_route {

         local IP_ADD=""

         local IP_DEL=""

-        local DEFAULT_ROUTE_GW=$(ip r | awk "/default.+$from_intf/ { print \$3; exit }")

+        local IP_UP=""

+        local DEFAULT_ROUTE_GW

+        DEFAULT_ROUTE_GW=$(ip r | awk "/default.+$from_intf/ { print \$3; exit }")

         local ADD_OVS_PORT=""

         if [[ $af == "inet" ]]; then

@@ -822,9 +824,10 @@ function _move_neutron_addresses_route {

         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

 }