Addressing Matei's comment: SPARK_LOCAL_IP environment variable
diff --git a/core/src/main/scala/spark/Utils.scala b/core/src/main/scala/spark/Utils.scala
index 9805105..c8799e6 100644
--- a/core/src/main/scala/spark/Utils.scala
+++ b/core/src/main/scala/spark/Utils.scala
@@ -200,7 +200,7 @@
    * Get the local host's IP address in dotted-quad format (e.g. 1.2.3.4).
    */
   def localIpAddress(): String = {
-    val defaultIpOverride = System.getenv("SPARK_DEFAULT_LOCAL_IP")
+    val defaultIpOverride = System.getenv("SPARK_LOCAL_IP")
     if (defaultIpOverride != null)
       defaultIpOverride
     else