diff --git a/src/main/java/com/samskivert/net/MACUtil.java b/src/main/java/com/samskivert/net/MACUtil.java
index f527277e..dbe3e641 100644
--- a/src/main/java/com/samskivert/net/MACUtil.java
+++ b/src/main/java/com/samskivert/net/MACUtil.java
@@ -75,6 +75,7 @@ public class MACUtil
             // 02-03-8A-00-00-11 - Westell Dual (USB/Ethernet) modem
             // FF-FF-FF-FF-FF-FF - Tunnel adapter Teredo
             // 02-00-4C-4F-4F-50 - MSFT thinger, loopback of some sort
+            // 00-00-00-00-00-00(-00-E0) - IP6 tunnel
             if (mac.startsWith("44-45-53")) {
                 continue;
             } else if (mac.startsWith("00-53-45-00")) {
@@ -91,6 +92,8 @@ public class MACUtil
                 continue;
             } else if (mac.startsWith("02-00-4C-4F-4F-50")) {
                 continue;
+            } else if (mac.startsWith("00-00-00-00-00-00")) {
+                continue;
             }
 
             list.add(mac);
diff --git a/src/main/java/com/samskivert/util/Randoms.java b/src/main/java/com/samskivert/util/Randoms.java
index 74e5f323..630c25bb 100644
--- a/src/main/java/com/samskivert/util/Randoms.java
+++ b/src/main/java/com/samskivert/util/Randoms.java
@@ -93,6 +93,26 @@ public class Randoms
         return low + (_r.nextFloat() * (high - low));
     }
 
+    /**
+     * Returns a pseudorandom, uniformly distributed <code>double</code> value between
+     * <code>0.0</code> (inclusive) and the <code>high</code> (exclusive).
+     *
+     * @param high the high value limiting the random number sought.
+     */
+    public double getDouble (double high)
+    {
+        return _r.nextDouble() * high;
+    }
+
+    /**
+     * Returns a pseudorandom, uniformly distributed <code>double</code> value between
+     * <code>low</code> (inclusive) and <code>high</code> (exclusive).
+     */
+    public double getInRange (double low, double high)
+    {
+        return low + (_r.nextDouble() * (high - low));
+    }
+
     /**
      * Returns true approximately one in <code>n</code> times.
      *
@@ -106,9 +126,9 @@ public class Randoms
     /**
      * Has a probability <code>p</code> of returning true.
      */
-    public boolean getProbability (float p)
+    public boolean getProbability (double p)
     {
-        return _r.nextFloat() < p;
+        return _r.nextDouble() < p;
     }
 
     /**
@@ -176,18 +196,6 @@ public class Randoms
         return pickPluck(iterable, ifEmpty, false);
     }
 
-    /**
-     * Pick a random element from the specified array, or return <code>ifEmpty</code>
-     * if it is empty.
-     *
-     * @throws NullPointerException if the array is null.
-     */
-    public <T> T pick (T[] array, T ifEmpty)
-    {
-        int size = array.length;
-        return (size == 0) ? ifEmpty : array[_r.nextInt(size)];
-    }
-
     /**
      * Pick a random <em>key</em> from the specified mapping of weight values, or return
      * <code>ifEmpty</code> if no mapping has a weight greater than <code>0</code>. Each