r = start_loopback(rtnl);
if (r == -EPERM) {
if (check_loopback() < 0) {
- log_warning("Failed to configure loopback device: %s",
- strerror(EPERM));
+ log_warning_errno(EPERM, "Failed to configure loopback device: %m");
return -EPERM;
}
} else if (r < 0) {
- log_warning("Failed to configure loopback device: %s",
- strerror(-r));
+ log_warning_errno(r, "Failed to configure loopback device: %m");
return r;
}