diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 02b0b9ead40b..225440f5f99e 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -436,10 +436,13 @@ cleanup()
 		ip -netns ${NSA} link set dev ${NSA_DEV} down
 		ip -netns ${NSA} link del dev ${NSA_DEV}
 
+		ip netns pids ${NSA} | xargs kill 2>/dev/null
 		ip netns del ${NSA}
 	fi
 
+	ip netns pids ${NSB} | xargs kill 2>/dev/null
 	ip netns del ${NSB}
+	ip netns pids ${NSC} | xargs kill 2>/dev/null
 	ip netns del ${NSC} >/dev/null 2>&1
 }