This is already fixed upstream, so warning is not useful.
Let's keep the workaround until the fix has percolated downstream.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#warning "Temporary work-around for broken glibc vs. linux kernel header definitions"
-#warning "This really should be removed sooner rather than later, when this is fixed upstream"
+/* Temporary work-around for broken glibc vs. linux kernel header definitions
+ * This is already fixed upstream, remove this when distributions have updated.
+ */
#define _NET_IF_H 1
#include <alloca.h>