This workaroud turns on when compiled with LLVM and breaks compilation
--- a/src/nm_network.c
+++ b/src/nm_network.c
@@ -6,27 +6,8 @@
 
 #if defined(NM_OS_LINUX)
 
-#ifdef NM_NET_IF_FIX
-/* Temporary work-around for broken glibc vs. linux kernel header definitions
- * This is already fixed upstream, remove this when distributions have updated.
- * net/if.h fuckup should be removed someday in future, when kernels <= 4.2
- * will not be supported
- * https://github.com/systemd/systemd/commit/ \
- *   08ce521fb2546921f2642bef067d2cc02158b121
- * https://github.com/systemd/systemd/commit/ \
- *   6f270e6bd8b78aedf9f77534d6d11141ea0bf8ca
- */
-#define _NET_IF_H 1
-#include <net/if.h>
-#ifndef IFNAMSIZ
-#define IFNAMSIZ 16
-extern unsigned int if_nametoindex(const char *__ifname) __THROW;
-#endif
-#include <linux/if.h>
-#else
 #include <net/if.h>
 #include <linux/if.h>
-#endif
 
 #include <time.h>
 #include <sys/socket.h>