diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 9e3a10bf0..dec33d408 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -1109,7 +1109,14 @@ nm_device_finish_init (NMDevice *self)
 		nm_device_enslave_slave (priv->master, self, NULL);
 
 	if (priv->ifindex > 0) {
-		if (priv->platform_link_initialized || (priv->is_nm_owned && nm_device_is_software (self))) {
+		if (priv->ifindex == 1) {
+			/* keep 'lo' as default-unmanaged. */
+
+			/* FIXME: either find a better way to unmange 'lo' that cannot be changed
+			 * by user configuration (NM_UNMANGED_LOOPBACK?) or fix managing 'lo'.
+			 * Currently it can happen that NM deletes 127.0.0.1 address. */
+			nm_device_set_initial_unmanaged_flag (self, NM_UNMANAGED_DEFAULT, TRUE);
+		} else if (priv->platform_link_initialized || (priv->is_nm_owned && nm_device_is_software (self))) {
 			nm_platform_link_get_unmanaged (NM_PLATFORM_GET, priv->ifindex, &platform_unmanaged);
 			nm_device_set_initial_unmanaged_flag (self, NM_UNMANAGED_DEFAULT, platform_unmanaged);
 		} else {
diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index 64f33af5d..e55670c61 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -4774,6 +4774,8 @@ constructed (GObject *_object)
 	int channel_flags;
 	gboolean status;
 	int nle;
+	GUdevEnumerator *enumerator;
+	GList *devices, *iter;
 
 	/* Initialize netlink socket for requests */
 	priv->nlh = setup_socket (FALSE, platform);
@@ -4838,16 +4840,6 @@ constructed (GObject *_object)
 
 	priv->wifi_data = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify) wifi_utils_deinit);
 
-	G_OBJECT_CLASS (nm_linux_platform_parent_class)->constructed (_object);
-}
-
-static void
-setup_devices (NMPlatform *platform)
-{
-	NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE (platform);
-	GUdevEnumerator *enumerator;
-	GList *devices, *iter;
-
 	/* And read initial device list */
 	enumerator = g_udev_enumerator_new (priv->udev_client);
 	g_udev_enumerator_add_match_subsystem (enumerator, "net");
@@ -4861,6 +4853,8 @@ setup_devices (NMPlatform *platform)
 	}
 	g_list_free (devices);
 	g_object_unref (enumerator);
+
+	G_OBJECT_CLASS (nm_linux_platform_parent_class)->constructed (_object);
 }
 
 static void
@@ -4898,8 +4892,6 @@ nm_linux_platform_class_init (NMLinuxPlatformClass *klass)
 	object_class->constructed = constructed;
 	object_class->finalize = nm_linux_platform_finalize;
 
-	platform_class->setup_devices = setup_devices;
-
 	platform_class->sysctl_set = sysctl_set;
 	platform_class->sysctl_get = sysctl_get;
 
diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c
index 13d2d6f11..e521fb155 100644
--- a/src/platform/nm-platform.c
+++ b/src/platform/nm-platform.c
@@ -405,10 +405,6 @@ nm_platform_query_devices (NMPlatform *self)
 		               NM_PLATFORM_REASON_INTERNAL);
 	}
 	g_array_unref (links_array);
-
-	/* Platform specific device setup. */
-	if (klass->setup_devices)
-		klass->setup_devices (self);
 }
 
 /**
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index 08d032a6c..f34ae811b 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -368,8 +368,6 @@ struct _NMPlatform {
 typedef struct {
 	GObjectClass parent;
 
-	void (*setup_devices) (NMPlatform *);
-
 	gboolean (*sysctl_set) (NMPlatform *, const char *path, const char *value);
 	char * (*sysctl_get) (NMPlatform *, const char *path);