debian man page for socket_mcloop4

socket_mcloop4(3)					     Library Functions Manual						 socket_mcloop4(3)

NAME
       socket_mcloop4 - set multicast loopback

SYNTAX
       #include <socket.h>

       int socket_mcloop4(int s,char loop);

DESCRIPTION
       socket_mcloop4  activates multicast loopback for the socket s if loop is non-zero, and deactivates it otherwise.  If loopback is activated,
       packets sent on this socket will be received on the same host.

       If something goes wrong, socket_mcloop4 returns -1, setting errno appropriately.

SEE ALSO
       socket_mcloop6(3), socket_mcjoin4(3), socket_mcleave4(3)

																 socket_mcloop4(3)