diff --git a/configs/systemd/99-open5gs.network b/configs/systemd/99-open5gs.network
index 572405c3b..eed7ce116 100644
--- a/configs/systemd/99-open5gs.network
+++ b/configs/systemd/99-open5gs.network
@@ -6,4 +6,5 @@ Address=10.45.0.1/16
 Address=2001:db8:cafe::1/48
 
 [Link]
+MTUBytes=1400
 RequiredForOnline=false