diff --git a/resources/templates/provision/grandstream/gxp2100/{$mac}.xml b/resources/templates/provision/grandstream/gxp2100/{$mac}.xml
index 4dea5864c1..33e0d419e3 100644
--- a/resources/templates/provision/grandstream/gxp2100/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2100/{$mac}.xml
@@ -2520,7 +2520,7 @@
 <!--# 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-->