@@ -254,8 +254,11 @@ static int setup_mcast_rcvr(int sock, union sockaddr_union* addr)

 		memcpy(&mreq6.ipv6mr_multiaddr, &addr->sin6.sin6_addr, 

 		       sizeof(struct in6_addr));

 		mreq6.ipv6mr_interface = 0;

-		

+#ifdef __OS_linux

 		if (setsockopt(sock, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6,

+#else

+		if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq6,

+#endif

 			       sizeof(mreq6))==-1){

 			LOG(L_ERR, "ERROR: setup_mcast_rcvr: setsockopt:%s\n",

 			    strerror(errno));