#ifndef __NET_IF_H #define __NET_IF_H struct if_nameindex { unsigned if_index; char *if_name; }; #define IF_NAMESIZE 16 void if_freenameindex(struct if_nameindex *); char *if_indextoname(unsigned, char *); struct if_nameindex *if_nameindex(void); unsigned if_nametoindex(const char *); #endif