IP_MULTICAST_LOOP  389 native_client_sdk/src/libraries/third_party/newlib-extras/netinet/in.h #define	IP_MULTICAST_LOOP	11   /* u_char; set/get IP multicast loopback */
IP_MULTICAST_LOOP  447 third_party/npapi/npspy/extern/nspr/md/_macos.h #define IP_MULTICAST_LOOP IP_MULTICAST_LOOP