.TH socket_mcleave4 3 .SH NAME socket_mcleave4 \- leave a multicast group .SH SYNTAX .B #include int \fBsocket_mcleave4\fP(int \fIs\fR, const char \fIgroupip\fR[4]); .SH DESCRIPTION socket_mcleave4 leaves the IPv4 multicast group \fIgroupip\fR. If something goes wrong, socket_mcleave4 returns -1, setting errno appropriately. .SH "SEE ALSO" socket_mcjoin4(3), socket_mcleave6(3), socket_getifidx(3)