diff --git a/target/linux/qoriq/base-files/etc/board.d/02_network b/target/linux/qoriq/base-files/etc/board.d/02_network
index 35b7ce9f321..355c8d37a46 100644
--- a/target/linux/qoriq/base-files/etc/board.d/02_network
+++ b/target/linux/qoriq/base-files/etc/board.d/02_network
@@ -21,7 +21,7 @@ watchguard,firebox-m300)
 
 	sweth_mac_offset=0x186d
 
-	for sweth in /sys/class/net/sweth*; do
+	for sweth in $(find /sys/class/net/ -name 'sweth*' -print); do
 		device="$(basename "$sweth")"
 		mac="$(mtd_get_mac_text wg_cfg0 "$sweth_mac_offset")"
 		switchports="$switchports $device"