--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/mapfiles/libextnet/mapfile-linux	Mon Nov 13 14:03:36 2017 +0530
@@ -0,0 +1,33 @@
+#
+# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+SUNWprivate_1.1 {
+	global:
+    	Java_jdk_net_LinuxSocketOptions_setQuickAck0;
+    	Java_jdk_net_LinuxSocketOptions_getQuickAck0;
+    	Java_jdk_net_LinuxSocketOptions_quickAckSupported0;
+	local:
+	    *;
+};