diff --git a/group_vars/edc/main.yml b/group_vars/edc/main.yml
index 54f11bc..88e6c2b 100644
--- a/group_vars/edc/main.yml
+++ b/group_vars/edc/main.yml
@@ -8,3 +8,5 @@ subnet_ids:
   users_wifi: 41
 
 router_ip_suffix: 254
+
+mtu: 1500