ioctl(SIOCGIFCONF) not returning ethernet interfaces?

     int s = socket(AF_INET, SOCK_DGRAM, 0);  //s returned 6 in this case                 // find the number of interfaces              ifnum = 32;           struct ifconf ifc;           ifc.ifc_len = ifnum * sizeof (struct ifreq);           ifc.ifc_buf = (char*)malloc(ifc.ifc_len);             if (ioctl(s, SIOCGIFCONF, &ifc) < 0)           {                close(s);                         free(ifc.ifc_buf);                return false;           }  

using
struct ifreq* preq = &ifc.ifc_req[0];
struct ifreq* preq = &ifc.ifc_req[1];

etc

I was able to see only the first entry has name "lo0"

the second one's name has a null character and the sa_family etc are not populated.

I am curious this code works fine for Linux. I am making this project for the iphone, emulator build. Is the emulator target giving this result? I guess I would not know unless I make a OS X target and try. Also the debugger have some different variable names than the ones in my code. But I think it's because OS X has a header file that typedef a bunch of this stuff.

My goal is the find the interface of the ethernet card and find things like Mac address.


Thanks in advance.