diff --git a/src/vnm_mad/remotes/OpenNebulaNetwork.conf b/src/vnm_mad/remotes/OpenNebulaNetwork.conf
index 51e2ef5fe8..a4f1ddd30f 100644
--- a/src/vnm_mad/remotes/OpenNebulaNetwork.conf
+++ b/src/vnm_mad/remotes/OpenNebulaNetwork.conf
@@ -40,3 +40,5 @@
 :vxlan_mc: 239.0.0.0
 # Time To Live (TTL) should be > 1 in routed multicast networks (IGMP)
 :vxlan_ttl: 16
+# Default MTU for the VXLAN interface
+:vxlan_mtu: 1500
diff --git a/src/vnm_mad/remotes/vxlan/vxlan_driver.rb b/src/vnm_mad/remotes/vxlan/vxlan_driver.rb
index 509c7c24e1..051198338b 100644
--- a/src/vnm_mad/remotes/vxlan/vxlan_driver.rb
+++ b/src/vnm_mad/remotes/vxlan/vxlan_driver.rb
@@ -45,7 +45,7 @@ class VXLANDriver < VNMMAD::VLANDriver
     def create_vlan_dev
         mc  = VNMMAD::VNMNetwork::IPv4.to_i(CONF[:vxlan_mc]) + @nic[:vlan_id].to_i
         mcs = VNMMAD::VNMNetwork::IPv4.to_s(mc)
-        mtu = @nic[:mtu] ? "mtu #{@nic[:mtu]}" : ""
+        mtu = @nic[:mtu] ? "mtu #{@nic[:mtu]}" : "mtu #{CONF[:vxlan_mtu]}"
         ttl = CONF[:vxlan_ttl] ? "ttl #{CONF[:vxlan_ttl]}" : ""
 
         OpenNebula.exec_and_log("#{command(:ip)} link add #{@nic[:vlan_dev]}"\