diff --git a/defaults/main.yml b/defaults/main.yml
index 2d33e84a..ee40aa36 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -327,7 +327,6 @@ neutron_l3_ha_net_cidr: 169.254.192.0/18
 
 # DHCP AGENT CONFIG
 neutron_dhcp_config:
-  dhcp-option-force: "26,1450"
   log-facility: "/var/log/neutron/neutron-dnsmasq.log"
 
 # Types of networks supported by the ml2 plugin
diff --git a/releasenotes/notes/neutron-dhcp-mtu-8767de6f541b04c1.yaml b/releasenotes/notes/neutron-dhcp-mtu-8767de6f541b04c1.yaml
new file mode 100644
index 00000000..c3f7b35a
--- /dev/null
+++ b/releasenotes/notes/neutron-dhcp-mtu-8767de6f541b04c1.yaml
@@ -0,0 +1,8 @@
+---
+upgrade:
+  - As described in the `Mitaka release notes
+    <http://docs.openstack.org/releasenotes/neutron/mitaka.html>`_
+    Neutron now correctly calculates for and advertises the MTU to
+    instances. The default DHCP configuration to advertise an MTU
+    to instances has therefore been removed from the variable
+    ``neutron_dhcp_config``.