diff --git a/resources/templates/provision/grandstream/gxp1450bk/{$mac}.xml b/resources/templates/provision/grandstream/gxp1450bk/{$mac}.xml
index 38828c6035..c893fc4fd3 100644
--- a/resources/templates/provision/grandstream/gxp1450bk/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp1450bk/{$mac}.xml
@@ -1122,7 +1122,7 @@
 <!-- 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 -->