Query: socket_getifidx
OS: debian
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
socket_getifidx(3) Library Functions Manual socket_getifidx(3)NAMEsocket_getifidx - get interface numberSYNTAX#include <socket.h> int socket_getifidx(const char* ifname);DESCRIPTIONsocket_getifidx returns the interface number for a symbolic network interface name (like "eth0" on Linux, for example). The interface number can be used as scope_id for IPv6 communications on link-local addresses. If something goes wrong, socket_getifidx returns -1, setting errno appropriately.SEE ALSOsocket_getifname(3), socket_connect6(3) socket_getifidx(3)