Make ifdown before interface changes on ipflush

Change-Id: I4397e9e82f8d4114ced50ff253679a8f27762c17
Closes-Bug: PROD-22473
diff --git a/linux/network/interface.sls b/linux/network/interface.sls
index 771bd5e..d55df29 100644
--- a/linux/network/interface.sls
+++ b/linux/network/interface.sls
@@ -389,31 +389,32 @@
 {%- endif %}
 
 {%- if interface.type in ('eth','ovs_port') %}
-{%- if interface.get('ipflush_onchange', False) %}
+  {%- if interface.get('restart_on_ipflush', False) %}
 
+linux_interface_down_on_ipflush_{{ interface_name }}:
+  cmd.run:
+  - name: ifdown {{ interface_name }}
+  - prereq:
+    - network: linux_interface_{{ interface_name }}
+
+linux_interface_up_on_ipflush_{{ interface_name }}:
+  cmd.run:
+  - name: ifup {{ interface_name }}
+  - onchanges:
+    - network: linux_interface_{{ interface_name }}
+
+  {%- elif interface.get('ipflush_onchange', False)%}
 linux_interface_ipflush_onchange_{{ interface_name }}:
   cmd.run:
   - name: "/sbin/ip address flush dev {{ interface_name }}"
-{%- if interface.type == 'eth' %}
   - onchanges:
+    {%- if interface.type == 'eth' %}
     - network: linux_interface_{{ interface_name }}
-{%- elif interface.type == 'ovs_port' %}
-  - onchanges:
+    {%- else %}
     - file: ovs_port_{{ interface_name }}
-{%- endif %}
+    {%- endif %}
 
-{%- if interface.get('restart_on_ipflush', False) %}
-
-linux_interface_restart_on_ipflush_{{ interface_name }}:
-  cmd.run:
-  - name: "ifdown {{ interface_name }}; ifup {{ interface_name }};"
-  - onchanges:
-    - cmd: linux_interface_ipflush_onchange_{{ interface_name }}
-
-{%- endif %}
-
-{%- endif %}
-
+  {%- endif %}
 {%- endif %}
 
 {%- endfor %}