diff --git a/build.sh b/build.sh
index b257e87..b892fd3 100644
--- a/build.sh
+++ b/build.sh
@@ -210,6 +210,7 @@ auto eth0 wlan0
 allow-hotplug eth0
 iface eth0 inet dhcp
         hwaddress ether AE:50:30:27:5A:CF # change this
+        pre-up /sbin/ifconfig eth0 mtu 3838 # setting MTU for DHCP, static just: mtu 3838
 allow-hotplug wlan0
 iface wlan0 inet dhcp
     wpa-ssid SSID