Addressing Matei's comment: SPARK_LOCAL_IP environment variable

core/src/main/scala/spark/Utils.scala

@@ -200,7 +200,7 @@ private object Utils extends Logging {
    * 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