diff --git a/templates/icehouse/dhcp_agent.ini b/templates/icehouse/dhcp_agent.ini
index fea5d285..b82e6bc1 100644
--- a/templates/icehouse/dhcp_agent.ini
+++ b/templates/icehouse/dhcp_agent.ini
@@ -10,7 +10,7 @@ interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
 dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
 root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
 
-{% if dnsmasq_flags -%}
+{% if instance_mtu or dnsmasq_flags -%}
 dnsmasq_config_file = /etc/neutron/dnsmasq.conf
 {% endif -%}
 
diff --git a/templates/mitaka/dhcp_agent.ini b/templates/mitaka/dhcp_agent.ini
index 43324b7f..4f70313a 100644
--- a/templates/mitaka/dhcp_agent.ini
+++ b/templates/mitaka/dhcp_agent.ini
@@ -11,7 +11,7 @@ interface_driver = openvswitch
 dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
 root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
 
-{% if dnsmasq_flags -%}
+{% if instance_mtu or dnsmasq_flags -%}
 dnsmasq_config_file = /etc/neutron/dnsmasq.conf
 {% endif -%}
 
diff --git a/templates/ocata/dhcp_agent.ini b/templates/ocata/dhcp_agent.ini
index bb3de51d..7b3dd490 100644
--- a/templates/ocata/dhcp_agent.ini
+++ b/templates/ocata/dhcp_agent.ini
@@ -11,7 +11,7 @@ interface_driver = openvswitch
 dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
 root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
 
-{% if dnsmasq_flags -%}
+{% if instance_mtu or dnsmasq_flags -%}
 dnsmasq_config_file = /etc/neutron/dnsmasq.conf
 {% endif -%}