Fixed a typo

Change-Id: Ic5556377630e86c341a625c78af2c75033f6eb1c
diff --git a/TestON/tests/CHOtest/CHOtest.py b/TestON/tests/CHOtest/CHOtest.py
index e93769d..fdee4be 100644
--- a/TestON/tests/CHOtest/CHOtest.py
+++ b/TestON/tests/CHOtest/CHOtest.py
@@ -816,10 +816,10 @@
         main.step( "Verify IPv6 Pingall" )
         pingResult = main.FALSE
         time1 = time.time()
-        ping_result = main.Mininet1.pingall( protocol="IPv6", timeout=main.pingTimeout)
-        if not ping_result:
+        pingResult = main.Mininet1.pingall( protocol="IPv6", timeout=main.pingTimeout)
+        if not pingResult:
             main.log.warn("First pingall failed. Trying again...")
-            ping_result = main.Mininet1.pingall( protocol="IPv6", timeout=main.pingTimeout )
+            pingResult = main.Mininet1.pingall( protocol="IPv6", timeout=main.pingTimeout )
         time2 = time.time()
         timeDiff = round( ( time2 - time1 ), 2 )
         main.log.report(