-static bool mac_is_permanent(struct udev_device *device) {
- const char *s;
- unsigned type;
- int r;
-
- s = udev_device_get_sysattr_value(device, "addr_assign_type");
- if (!s)
- return true; /* if we don't know, assume it is permanent */
- r = safe_atou(s, &type);
- if (r < 0)
- return true;
-
- /* check for NET_ADDR_PERM */
- return type == 0;
-}
-