diff --git a/resources/templates/provision/yealink/t42s/y000000000067.cfg b/resources/templates/provision/yealink/t42s/y000000000067.cfg
index 7555c27529..d708d44d73 100644
--- a/resources/templates/provision/yealink/t42s/y000000000067.cfg
+++ b/resources/templates/provision/yealink/t42s/y000000000067.cfg
@@ -58,12 +58,13 @@ static.network.span_to_pc_port =
 static.network.vlan.pc_port_mode =
 static.network.static_dns_enable =
 static.network.pc_port.enable =
-static.network.primary_dns = {$dns_server_primary}
-static.network.secondary_dns = {$dns_server_secondary}
 static.network.internet_port.gateway =
 static.network.internet_port.mask =
 static.network.internet_port.ip =
 static.network.internet_port.type =
+{if isset($dns_server_primary)}network.primary_dns = {$dns_server_primary}{/if}
+
+{if isset($dns_server_secondary)}network.secondary_dns = {$dns_server_secondary}{/if}
 
 
 #######################################################################################
@@ -89,7 +90,7 @@ static.network.internet_port.speed_duplex =
 #######################################################################################
 ##                                   Network LLDP                                    ##
 #######################################################################################
-static.network.lldp.enable =
+static.network.lldp.enable = {$yealink_lldp_enable}
 static.network.lldp.packet_interval =