diff --git a/resources/templates/provision/grandstream/grp26xx/{$mac}.xml b/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
index 66d9613474..6a770d47d2 100644
--- a/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
@@ -4868,7 +4868,7 @@
     <!-- # Internet Protocol. 0 - Both, prefer IPv4, 1 - Both, prefer IPv6, 2 - IPv4 Only, 3 - IPv6 Only. Default is 2 -->
     <!-- # Number: 0, 1, 2, 3 -->
     <!-- # Mandatory -->
-    <P1415>2</P1415>
+    {if isset($grandstream_ipv_mode)}<P1415>{$grandstream_ipv_mode}</P1415>{else}<P1415>0</P1415>{/if}
 
     <!-- # IPv4 Address Type. 0 - DHCP, 1 - Static IP, 2 - PPPoE. Default is 0 -->
     <!-- # Number: 0, 1, 2 -->