diff --git a/setup/install_scripts/99-so-checksum-offload-disable b/setup/install_scripts/99-so-checksum-offload-disable
index 89f01c7a3..bcdd04029 100755
--- a/setup/install_scripts/99-so-checksum-offload-disable
+++ b/setup/install_scripts/99-so-checksum-offload-disable
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if [[ "$DEVICE_IFACE" != "ens33" && "$DEVICE_IFACE" != *"docker"* ]]; then
+if [[ "$DEVICE_IFACE" != "$MAININT" && "$DEVICE_IFACE" != *"docker"* ]]; then
 	for i in rx tx sg tso ufo gso gro lro; do
 		ethtool -K "$DEVICE_IFACE" "$i" off;
   	done