diff --git a/debian/wit-network-config.postinst b/debian/wit-network-config.postinst
index 18aa1a7..54164db 100755
--- a/debian/wit-network-config.postinst
+++ b/debian/wit-network-config.postinst
@@ -165,7 +165,6 @@ case "$1" in
 			auto $ifname
 			iface $ifname inet static
 			    address ${ipv4/\\/}
-			    mtu 9000
 
 			iface $ifname inet6 static
 			    address ${ipv6/\\/}