r = rtnl_set_link_name(&event->rtnl, udev_device_get_ifindex(dev), name);
if (r < 0) {
- log_error("error changing net interface name '%s' to '%s': %s",
- oldname, name, strerror(-r));
+ log_error_errno(r, "Error changing net interface name '%s' to '%s': %m", oldname, name);
return r;
}