2 files changed, 21 insertions, 0 deletions
diff --git a/src/main/java/derms/net/tomulticast/TotalOrderMulticast.java b/src/main/java/derms/net/tomulticast/TotalOrderMulticast.java
index 0d8b690..1fb4348 100644
--- a/src/main/java/derms/net/tomulticast/TotalOrderMulticast.java
+++ b/src/main/java/derms/net/tomulticast/TotalOrderMulticast.java
@@ -6,6 +6,7 @@ import derms.net.rmulticast.ReliableMulticast;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
+import java.net.NetworkInterface;
 import java.util.logging.Logger;
 
 /**
@@ -29,6 +30,13 @@ public abstract class TotalOrderMulticast<T extends MessagePayload> {
     protected Long seq; // Sequence number.
     protected final Logger log;
 
+    protected TotalOrderMulticast(InetSocketAddress group, InetAddress laddr, NetworkInterface ifs) throws IOException {
+        this.sock = new ReliableMulticast<Message<T>>(group, laddr, ifs);
+        this.group = group;
+        this.seq = (long) 0;
+        this.log = Logger.getLogger(this.getClass().getName());
+    }
+
     protected TotalOrderMulticast(InetSocketAddress group, InetAddress laddr) throws IOException {
         this.sock = new ReliableMulticast<Message<T>>(group, laddr);
         this.group = group;
diff --git a/src/main/java/derms/net/tomulticast/TotalOrderMulticastSender.java b/src/main/java/derms/net/tomulticast/TotalOrderMulticastSender.java
index 0de0ad0..b9ca99a 100644
--- a/src/main/java/derms/net/tomulticast/TotalOrderMulticastSender.java
+++ b/src/main/java/derms/net/tomulticast/TotalOrderMulticastSender.java
@@ -5,6 +5,7 @@ import derms.net.MessagePayload;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
+import java.net.NetworkInterface;
 
 /**
  * The single sending process in a {@link TotalOrderMulticast} group. <b>Only one sender is
@@ -16,6 +17,18 @@ public class TotalOrderMulticastSender<T extends MessagePayload> extends TotalOr
      *
      * @param group The IP address and port of the multicast group to join.
      * @param laddr The IP address of the local process.
+     * @param ifs The network interface to use.
+     */
+    public TotalOrderMulticastSender(InetSocketAddress group, InetAddress laddr, NetworkInterface ifs) throws IOException {
+        super(group, laddr, ifs);
+    }
+
+    /**
+     * Join the specified totally-ordered multicast group as its lone sender using the
+     * default network interface of the machine.
+     *
+     * @param group The IP address and port of the multicast group to join.
+     * @param laddr The IP address of the local process.
      */
     public TotalOrderMulticastSender(InetSocketAddress group, InetAddress laddr) throws IOException {
         super(group, laddr);