socket_getifidx(3) Library Functions Manual socket_getifidx(3) NAME socket_getifidx - get interface number SYNTAX #include <libowfat/socket.h> int socket_getifidx(const char* ifname); DESCRIPTION socket_getifidx returns the interface number for a symbolic network inter- face 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 appro- priately. SEE ALSO socket_getifname(3), socket_connect6(3) socket_getifidx(3)
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