diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
index 1ef2372..1fc1cc2 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
@@ -1032,6 +1032,11 @@ ar7240_set_export_netdevs(struct switch_dev *dev, const struct switch_attr *attr
 			if (!phy)
 				continue;
 
+			if (phy->attached_dev) {
+				printk(KERN_INFO "Switch: Phy on addr 0x%x is already attached. Not creating a phy device for it.\n", phy->addr);
+				continue;
+			}
+
 			netdev = alloc_netdev_mqs(sizeof(struct priv_netdev_port), "phy%d", ether_setup, 1, 1);
 			if (!netdev) {
 				printk(KERN_ERR "can not allow netdev\n");