--- src/iperf_multicast_api.c.orig	2024-04-07 03:47:17 UTC
+++ src/iperf_multicast_api.c
@@ -175,6 +175,7 @@ static int iperf_multicast_join_v6 (struct thread_Sett
 
 
 static int iperf_multicast_join_v6 (struct thread_Settings *inSettings) {
+#if HAVE_IPV6
 #if (HAVE_DECL_IPV6_JOIN_GROUP || HAVE_DECL_IPV6_ADD_MEMBERSHIP)
 #if HAVE_STRUCT_IPV6_MREQ
     struct ipv6_mreq mreq;
@@ -191,11 +192,12 @@ static int iperf_multicast_join_v6 (struct thread_Sett
     return ((rc == 0) ? IPERF_MULTICAST_JOIN_SUCCESS : IPERF_MULTICAST_JOIN_FAIL);
 #endif
 #endif
+#endif
     return IPERF_MULTICAST_JOIN_UNSUPPORTED;
-
 }
 
 static int iperf_multicast_join_v6_pi (struct thread_Settings *inSettings) {
+#if HAVE_IPV6
 #if HAVE_DECL_MCAST_JOIN_GROUP
     int rc = -1;
     struct group_req group_req;
@@ -208,6 +210,7 @@ static int iperf_multicast_join_v6_pi (struct thread_S
 		    (socklen_t) sizeof(struct group_source_req));
     FAIL_errno(rc == SOCKET_ERROR, "mcast v6 join group", inSettings);
     return ((rc == 0) ? IPERF_MULTICAST_JOIN_SUCCESS : IPERF_MULTICAST_JOIN_FAIL);
+#endif
 #endif
     return IPERF_MULTICAST_JOIN_UNSUPPORTED;
 }