diff --git a/ansible/group_vars/all/docker b/ansible/group_vars/all/docker
index f05a9bf..901590a 100644
--- a/ansible/group_vars/all/docker
+++ b/ansible/group_vars/all/docker
@@ -2,3 +2,4 @@ docker_daemon_config:
   dns:
     - 172.17.0.1
     - 192.168.1.5
+  mtu: 1420