.TH socket_mcjoin6 3 .SH NAME socket_mcjoin6 \- join a multicast group .SH SYNTAX .B #include int \fBsocket_mcjoin6\fP(int \fIs\fR,const char \fIgroupip\fR[16],uint32 \fIinterface\fR); .SH DESCRIPTION socket_mcjoin6 joins the IPv6 multicast group \fIgroupip\fR on \fIinterface\fR. If something goes wrong, socket_mcjoin6 returns -1, setting errno appropriately. .SH "SEE ALSO" socket_mcleave6(3), socket_mcjoin4(3), socket_getifidx(3)