--- source/posix/socket.c	2025-07-29 04:45:52.000000000 +0800
+++ source/posix/socket.c	2025-08-18 15:51:05.000000000 +0800
@@ -1410,6 +1410,7 @@
             return aws_raise_error(AWS_IO_SOCKET_INVALID_OPTIONS);
         }
         if (options->domain == AWS_SOCKET_IPV6) {
+#ifdef IPV6_BOUND_IF
             if (setsockopt(
                     socket->io_handle.data.fd,
                     IPPROTO_IPV6,
@@ -1426,6 +1427,7 @@
                     errno_value);
                 return aws_raise_error(AWS_IO_SOCKET_INVALID_OPTIONS);
             }
+#endif
         } else if (setsockopt(
                        socket->io_handle.data.fd,
                        IPPROTO_IP,
@@ -1466,7 +1468,7 @@
             }
         }
 
-#if !defined(__OpenBSD__)
+#if !defined(__OpenBSD__) && !defined(__APPLE__)
         if (socket->options.keep_alive_interval_sec && socket->options.keep_alive_timeout_sec) {
             int ival_in_secs = socket->options.keep_alive_interval_sec;
             if (AWS_UNLIKELY(setsockopt(