| lwIP
    2.1.2
    Lightweight IP stack | 
#include "lwip/opt.h"#include "lwip/errno.h"#include "lwip/if_api.h"#include "lwip/netifapi.h"#include "lwip/priv/sockets_priv.h"| Functions | |
| char * | lwip_if_indextoname (unsigned int ifindex, char *ifname) | 
| unsigned int | lwip_if_nametoindex (const char *ifname) | 
Interface Identification APIs from: RFC 3493: Basic Socket Interface Extensions for IPv6 Section 4: Interface Identification