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diff --git a/libjava/java/net/PlainDatagramSocketImpl.java b/libjava/java/net/PlainDatagramSocketImpl.java
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+++ b/libjava/java/net/PlainDatagramSocketImpl.java
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+// PlainDatagramSocketImpl.java - Implementation of DatagramSocketImpl.
+
+/* Copyright (C) 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package java.net;
+import java.io.IOException;
+
+/**
+ * @author Warren Levy <warrenl@cygnus.com>
+ * @date May 3, 1999.
+ */
+
+/**
+ * Written using on-line Java Platform 1.2 API Specification, as well
+ * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
+ * Status:  Believed complete and correct.
+ */
+
+class PlainDatagramSocketImpl extends DatagramSocketImpl
+{
+  // These fields are mirrored for use in native code to avoid cpp conflicts
+  // when the #defines in system header files are the same as the public fields.
+  static final int _Jv_TCP_NODELAY_ = SocketOptions.TCP_NODELAY,
+                   _Jv_SO_BINDADDR_ = SocketOptions.SO_BINDADDR,
+                   _Jv_SO_REUSEADDR_ = SocketOptions.SO_REUSEADDR,
+		   _Jv_IP_MULTICAST_IF_ = SocketOptions.IP_MULTICAST_IF,
+                   _Jv_SO_LINGER_ = SocketOptions.SO_LINGER,
+                   _Jv_SO_TIMEOUT_ = SocketOptions.SO_TIMEOUT,
+                   _Jv_SO_SNDBUF_ = SocketOptions.SO_SNDBUF,
+                   _Jv_SO_RCVBUF_ = SocketOptions.SO_RCVBUF;
+
+  int fnum = -1;
+
+  // FIXME: Is this necessary?  Could it help w/ DatagramSocket.getLocalAddress?
+  // InetAddress address;
+  
+  // localAddress cache  
+  InetAddress localAddress;
+
+  // These values are set/read by setOption/getOption.
+  int timeout = 0;
+  /* InetAddress iface = null; */
+  int ttl = -1;
+
+  // FIXME: Probably should have bind (and create?) calls from DatagramSocket
+  // constuctor.  If so, then same change should be made to the corresponding
+  // Socket (non-datagram) classes.  This allows the implementation more
+  // complete control over how the socket is set up and used (e.g. connect,
+  // setting options, etc.).
+  public PlainDatagramSocketImpl()
+  {
+  }
+
+  protected native void bind(int lport, InetAddress laddr)
+	throws SocketException;
+  protected native void create() throws SocketException;
+  protected native int peek(InetAddress i) throws IOException;
+  protected native void setTimeToLive(int ttl) throws IOException;
+  protected native int getTimeToLive() throws IOException;
+  protected native void send(DatagramPacket p) throws IOException;
+  protected native void receive(DatagramPacket p) throws IOException;
+  public native void setOption(int optID, Object value) throws SocketException;
+  public native Object getOption(int optID) throws SocketException;
+  private native void mcastGrp(InetAddress inetaddr, boolean join)
+	throws IOException;
+
+  protected void close() throws IOException
+  {
+    fd.close();
+  }
+
+  // Deprecated in JDK 1.2.
+  protected byte getTTL() throws IOException
+  {
+    return (byte) getTimeToLive();
+  }
+
+  // Deprecated in JDK 1.2.
+  protected void setTTL(byte ttl) throws IOException
+  {
+    setTimeToLive(((int) ttl) & 0xFF);
+  }
+
+  protected void join(InetAddress inetaddr) throws IOException
+  {
+    mcastGrp(inetaddr, true);
+  }
+
+  protected void leave(InetAddress inetaddr) throws IOException
+  {
+    mcastGrp(inetaddr, false);
+  }
+}