--- a/make/test/JtregNativeJdk.gmk	Fri Nov 30 10:37:48 2018 +0530
+++ b/make/test/JtregNativeJdk.gmk	Fri Nov 30 10:29:58 2018 +0000
@@ -60,7 +60,7 @@
   ifeq ($(OPENJDK_TARGET_OS), linux)
     BUILD_JDK_JTREG_LIBRARIES_LIBS_libInheritedChannel := -ljava
   else ifeq ($(OPENJDK_TARGET_OS), solaris)
-    BUILD_JDK_JTREG_LIBRARIES_LIBS_libInheritedChannel := -ljava
+    BUILD_JDK_JTREG_LIBRARIES_LIBS_libInheritedChannel := -ljava -lsocket -lnsl
   endif
 endif
 

--- a/src/java.base/unix/native/libnet/net_util_md.c	Fri Nov 30 10:37:48 2018 +0530
+++ b/src/java.base/unix/native/libnet/net_util_md.c	Fri Nov 30 10:29:58 2018 +0000
@@ -305,12 +305,12 @@
     }
 
     /*
-     * If fd 0 is a socket it means we've been launched from inetd or
+     * If fd 0 is a socket it means we may have been launched from inetd or
      * xinetd. If it's a socket then check the family - if it's an
      * IPv4 socket then we need to disable IPv6.
      */
     if (getsockname(0, &sa.sa, &sa_len) == 0) {
-        if (sa.sa.sa_family != AF_INET6) {
+        if (sa.sa.sa_family == AF_INET) {
             close(fd);
             return JNI_FALSE;
         }

--- a/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/InheritedChannelTest.java	Fri Nov 30 10:37:48 2018 +0530
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/InheritedChannelTest.java	Fri Nov 30 10:29:58 2018 +0000
@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 4673940 4930794
+ * @bug 4673940 4930794 8211842
  * @summary Unit tests for inetd feature
  * @requires (os.family == "linux" | os.family == "solaris")
  * @library /test/lib
@@ -33,7 +33,7 @@
  *        jdk.test.lib.JDKToolLauncher
  *        jdk.test.lib.Platform
  *        jdk.test.lib.process.*
- *        StateTest StateTestService EchoTest EchoService CloseTest Launcher Util
+ *        UnixSocketTest StateTest StateTestService EchoTest EchoService CloseTest Launcher Util
  * @run testng/othervm/native InheritedChannelTest
  * @key intermittent
  */
@@ -73,6 +73,7 @@
     @DataProvider
     public Object[][] testCases() {
         return new Object[][]{
+            { "UnixSocketTest", List.of(UnixSocketTest.class.getName())},
             { "StateTest", List.of(StateTest.class.getName()) },
             { "EchoTest",  List.of(EchoTest.class.getName())  },
             { "CloseTest", List.of(CloseTest.class.getName()) },

--- a/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/Launcher.java	Fri Nov 30 10:37:48 2018 +0530
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/Launcher.java	Fri Nov 30 10:29:58 2018 +0000
@@ -62,6 +62,19 @@
         launch0(cmdarray, fd);
     }
 
+
+    /**
+     * Launch 'java' with specified class using a UnixDomainSocket pair linking calling
+     * process to the child VM. UnixDomainSocket is a simplified interface to PF_UNIX sockets
+     * which supports byte a time reads and writes.
+     */
+    public static UnixDomainSocket launchWithUnixDomainSocket(String className) throws IOException {
+        UnixDomainSocket[] socks = UnixDomainSocket.socketpair();
+        launch(className, null, null, socks[0].fd());
+        socks[0].close();
+        return socks[1];
+    }
+
     /*
      * Launch 'java' with specified class with the specified arguments (may be null).
      * The launched process will inherit a connected TCP socket. The remote endpoint

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/UnixDomainSocket.java	Fri Nov 30 10:29:58 2018 +0000
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2018, 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.
+ *
+ * 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.
+ */
+
+/**
+ * A simplified Unix domain socket which can read and write bytes at a time
+ * used for simulating external launchers which use UNIX sockets to talk
+ * the VM.
+ */
+
+import java.io.IOException;
+
+public class UnixDomainSocket {
+
+    static {
+        System.loadLibrary("InheritedChannel");
+        init();
+    }
+
+    private final int fd;
+
+    public UnixDomainSocket(int fd) {
+        this.fd = fd;
+    }
+
+    public int read() throws IOException {
+        return read0(fd);
+    }
+
+    public void write(int w) throws IOException {
+        write0(fd, w);
+    }
+
+    public void close() {
+        close0(fd);
+    }
+
+    public int fd() {
+        return fd;
+    }
+
+    public String toString() {
+        return "UnixDomainSocket: fd=" + Integer.toString(fd);
+    }
+
+    /* read and write bytes with UNIX domain sockets */
+
+    private static native int read0(int fd) throws IOException;
+    private static native void write0(int fd, int w) throws IOException;
+    private static native void close0(int fd);
+    private static native void init();
+    public static native UnixDomainSocket[] socketpair();
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/UnixSocketTest.java	Fri Nov 30 10:29:58 2018 +0000
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2018, 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.
+ *
+ * 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.
+ */
+
+/*
+ * If the platform has IPv6 we spawn a child process simulating the
+ * effect of being launched from node.js. We check that IPv6 is available in the child
+ * and report back as appropriate.
+ */
+
+import jdk.test.lib.Utils;
+import java.io.*;
+import java.net.InetAddress;
+import java.net.Inet6Address;
+import java.net.NetworkInterface;
+import java.util.Collections;
+import java.util.Enumeration;
+
+public class UnixSocketTest {
+
+    static boolean hasIPv6() throws Exception {
+        Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
+        for (NetworkInterface netint : Collections.list(nets)) {
+            Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
+            for (InetAddress inetAddress : Collections.list(inetAddresses)) {
+                if (inetAddress instanceof Inet6Address) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    public static class Child {
+        public static void main(String[] args) throws Exception {
+            System.out.write('X');
+            System.out.flush();
+            if (hasIPv6()) {
+                System.out.println("Y"); // GOOD
+            } else
+                System.out.println("N"); // BAD
+        }
+    }
+
+    public static void main(String args[]) throws Exception {
+
+        if (!hasIPv6()) {
+            return; // can only test if IPv6 is present
+        }
+        UnixDomainSocket sock = Launcher.launchWithUnixDomainSocket("UnixSocketTest$Child");
+        if (sock.read() != 'X') {
+            System.exit(-2);
+        }
+        if (sock.read() != 'Y') {
+            System.exit(-2);
+        }
+    }
+}

--- a/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/libInheritedChannel.c	Fri Nov 30 10:37:48 2018 +0530
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/libInheritedChannel.c	Fri Nov 30 10:29:58 2018 +0000
@@ -36,6 +36,11 @@
 
 #include "jni.h"
 
+#define CHECK(X) if ((X) == 0) {printf("JNI init error line %d\n", __LINE__); _exit(1);}
+
+static jclass unixSocketClass;
+static jmethodID unixSocketCtor;
+
 /*
  * Throws the exception of the given class name and detail message
  */
@@ -182,3 +187,63 @@
     execvp(cmdv[0], cmdv);
     _exit(-1);
 }
+
+JNIEXPORT void JNICALL Java_UnixDomainSocket_init(JNIEnv *env, jclass cls) {
+    CHECK(unixSocketClass = (*env)->FindClass(env, "UnixDomainSocket"));
+    CHECK(unixSocketClass = (*env)->NewGlobalRef(env, unixSocketClass));
+    CHECK(unixSocketCtor = (*env)->GetMethodID(env, unixSocketClass, "<init>", "(I)V"));
+}
+
+/*
+ * Class:     UnixDomainSocket
+ * Method:    socketpair
+ * Signature: ()[LUnixDomainSocket
+ */
+JNIEXPORT jobjectArray JNICALL Java_UnixDomainSocket_socketpair
+  (JNIEnv *env, jclass cls)
+{
+    int fds[2];
+    jobject socket;
+    jobjectArray result = (*env)->NewObjectArray(env, 2, unixSocketClass, 0);
+    if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
+        perror("socketpair");
+        return result;
+    }
+    socket = (*env)->NewObject(env, unixSocketClass, unixSocketCtor, fds[0]);
+    (*env)->SetObjectArrayElement(env, result, 0, socket);
+    socket = (*env)->NewObject(env, unixSocketClass, unixSocketCtor, fds[1]);
+    (*env)->SetObjectArrayElement(env, result, 1, socket);
+    return result;
+}
+
+JNIEXPORT jint JNICALL Java_UnixDomainSocket_read0
+  (JNIEnv *env, jclass cls, jint fd)
+{
+    int ret;
+    unsigned char res;
+    ret = read(fd, &res, 1);
+    if (ret == 0)
+        return -1; /* EOF */
+    else if (ret < 0) {
+        ThrowException(env, "java/io/IOException", "read error");
+        return -1;
+    }
+    return res;
+}
+
+JNIEXPORT void JNICALL Java_UnixDomainSocket_write0
+  (JNIEnv *env, jclass cls, jint fd, jint byte)
+{
+    int ret;
+    unsigned char w = (unsigned char)byte;
+    ret = write(fd, &w, 1);
+    if (ret < 0) {
+        ThrowException(env, "java/io/IOException", "write error");
+    }
+}
+
+JNIEXPORT void JNICALL Java_UnixDomainSocket_close0
+  (JNIEnv *env, jclass cls, jint fd)
+{
+    close(fd);
+}