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#include <linux/if.h>
#include <linux/net.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <sys/socket.h>
#ifndef SOCK_DGRAM
#define SOCK_DGRAM 2
#endif
int if_nametoindex(char* blub) {
struct ifreq ifr;
int fd;
char *tmp;
int len=sizeof(ifr.ifr_name);
fd=socket(AF_INET6,SOCK_DGRAM,0);
if (fd<0) fd=socket(AF_INET,SOCK_DGRAM,0);
for (tmp=ifr.ifr_name; len>0; --len) {
if ((*tmp++=*blub++)==0) break;
}
if (ioctl(fd,SIOCGIFINDEX,&ifr)==0) {
close(fd);
return ifr.ifr_ifindex;
}
close(fd);
return 0;
}
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