diff --git a/etc/network/interfaces b/etc/network/interfaces
index e6c1cfb..454ff20 100644
--- a/etc/network/interfaces
+++ b/etc/network/interfaces
@@ -2,13 +2,13 @@ auto eth0
 iface eth0 inet static
   address 5.101.171.215/28
   gateway 5.101.171.209
-  mtu 9000
+  mtu 1500
 iface eth0 inet6 static
   address 2a01:a500:2981:1::d7/64
   gateway 2a01:a500:2981:1:ff:ff:ff:ff
-  mtu 9000
+  mtu 1500
 
 auto eth1
 iface eth1 inet static
   address 10.254.0.215/24
-  mtu 9000
+  mtu 1500