diff --git a/jjb/pipeline/voltha-scale-multi-stack.groovy b/jjb/pipeline/voltha-scale-multi-stack.groovy
index 5a56f29..6574492 100644
--- a/jjb/pipeline/voltha-scale-multi-stack.groovy
+++ b/jjb/pipeline/voltha-scale-multi-stack.groovy
@@ -101,6 +101,9 @@
 
             cd $WORKSPACE
             rm -rf $WORKSPACE/*
+
+            # remove orphaned port-forward from different namespaces
+            ps aux | grep port-forw | grep -v grep | awk '{print \$2}' | xargs --no-run-if-empty kill -9
           """
         }
       }