Signed-off-by: Alejandro Colomar <alx@kernel.org>
.BI " int\~*" ttl ,\~sizeof(int));
.fi
.SH DESCRIPTION
-.TP
-.BR IP_MULTICAST_TTL " (since Linux 1.2)"
Set or read the time-to-live value of outgoing multicast packets for this
socket.
-It is very important for multicast packets to set the smallest TTL possible.
+.P
The default is 1 which means that multicast packets don't leave the local
network unless the user program explicitly requests it.
-Argument is an integer.
.SH ERRORS
See
.BR IPPROTO_IP (2const).
.BR setsockopt (2).
See
.BR ip (7).
+.SH HISTORY
+Linux 1.2.
+.SH CAVEATS
+It is very important for multicast packets to set the smallest TTL possible.
.SH SEE ALSO
.BR IPPROTO_IP (2const),
.BR setsockopt (2),