diff --git a/0233-app-testpmd-release-flows-left-before-port-stop.patch b/0233-app-testpmd-release-flows-left-before-port-stop.patch
new file mode 100644
index 0000000000000000000000000000000000000000..569515508c173f6f2b9f05ed259a0c9102337c03
--- /dev/null
+++ b/0233-app-testpmd-release-flows-left-before-port-stop.patch
@@ -0,0 +1,40 @@
+From b71d309637e90a67f7814604f3a17b696b6304ce Mon Sep 17 00:00:00 2001
+From: Gregory Etelson <getelson@nvidia.com>
+Date: Thu, 26 Nov 2020 18:43:02 +0200
+Subject: [PATCH] app/testpmd: release flows left before port stop
+
+According to RTE flow user guide, PMD will not keep flow rules after
+port stop. Application resources that refer to flow rules become
+obsolete after port stop and must not be used.
+Testpmd maintains linked list of active flows for each port. Entries in
+that list are allocated dynamically and must be explicitly released to
+prevent memory leak.
+The patch releases testpmd port flow_list that holds remaining flows
+before port is stopped.
+
+Cc: stable@dpdk.org
+
+Signed-off-by: Gregory Etelson <getelson@nvidia.com>
+Acked-by: Ori Kam <orika@nvidia.com>
+Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
+---
+ app/test-pmd/testpmd.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
+index 60636830b..7bede14ce 100644
+--- a/app/test-pmd/testpmd.c
++++ b/app/test-pmd/testpmd.c
+@@ -2768,6 +2768,9 @@ stop_port(portid_t pid)
+ 			}
+ 		}
+ 
++		if (port->flow_list)
++			port_flow_flush(pi);
++
+ 		if (eth_dev_stop_mp(pi) != 0)
+ 			RTE_LOG(ERR, EAL, "rte_eth_dev_stop failed for port %u\n",
+ 				pi);
+-- 
+2.33.0
+
diff --git a/dpdk.spec b/dpdk.spec
index ec7918da07a265986dfa5acfc627a8250779d413..c01c850411107ff930de02799762589308330dd2 100644
--- a/dpdk.spec
+++ b/dpdk.spec
@@ -1,6 +1,6 @@
 Name: dpdk
 Version: 20.11
-Release: 13
+Release: 14
 Packager: packaging@6wind.com
 URL: http://dpdk.org
 %global source_version  20.11
@@ -239,6 +239,7 @@ Patch229: 0229-net-hns3-add-runtime-config-for-mailbox-limit-time.patch
 Patch230: 0230-net-hns3-fix-mailbox-communication-with-HW.patch				
 Patch231: 0231-app-testpmd-support-multi-process.patch					
 Patch232: 0232-app-testpmd-fix-key-for-RSS-flow-rule.patch
+Patch233: 0233-app-testpmd-release-flows-left-before-port-stop.patch
 
 Summary: Data Plane Development Kit core
 Group: System Environment/Libraries
@@ -377,6 +378,9 @@ strip -g $RPM_BUILD_ROOT/lib/modules/${namer}/extra/dpdk/rte_kni.ko
 /usr/sbin/depmod
 
 %changelog
+* Wed Nov 10 2021 Min Hu <humin29@huawei.com> - 20.11-14
+- release flows left before port stop
+
 * Mon Nov 08 2021 Min Hu <humin29@huawei.com> - 20.11-13
 - fix PMD cannot get the RSS key.