1#ifndef _NET_IF_H
2
3# include_next <net/if.h>
4
5#ifndef _ISOMAC
6libc_hidden_proto (if_nametoindex)
7extern __typeof (if_nametoindex) __if_nametoindex;
8libc_hidden_proto (__if_nametoindex)
9libc_hidden_proto (if_indextoname)
10libc_hidden_proto (if_nameindex)
11libc_hidden_proto (if_freenameindex)
12extern __typeof (if_freenameindex) __if_freenameindex;
13libc_hidden_proto (__if_freenameindex)
14#endif
15
16#endif
17

source code of glibc/include/net/if.h