diff --git a/resources/templates/provision/grandstream/gxp16xx/{$mac}.xml b/resources/templates/provision/grandstream/gxp16xx/{$mac}.xml
index 0f7ed204f3..c29799eea5 100644
--- a/resources/templates/provision/grandstream/gxp16xx/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp16xx/{$mac}.xml
@@ -1780,7 +1780,7 @@
 <!--  Internet Protocol. 0 - Prefer IPv4, 1 - Prefer IPv6. Default is 0 -->
 <!--  Number: 0, 1 -->
 <!--  Mandatory -->
-<P1415>0</P1415>
+{if isset($grandstream_ipv_mode)}<P1415>{$grandstream_ipv_mode}</P1415>{else}<P1415>0</P1415>{/if}
 <!--  IP Address Mode. 0 - DHCP, 1 - Static IP, 2 - PPPoE. Default is 0 -->
 <!--  Number: 0, 1, 2 -->
 <!--  Mandatory -->