K 10 svn:author V 3 bms K 8 svn:date V 27 2009-03-04T03:40:02.916546Z K 7 svn:log V 258 Add sysctl net.inet.ip.mcast.loop. This controls whether or not IPv4 multicast sends are looped back to senders by default on a stack-wide basis, rather than relying on the socket option. Note that the sysctl only applies to newly created multicast sockets. END