--- zzzz-none-000/linux-4.1.38/net/key/af_key.c	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/net/key/af_key.c	2020-11-25 10:06:48.000000000 +0000
@@ -2719,6 +2719,10 @@
 	int err, err2;
 
 	err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, true);
+#if defined(CONFIG_BCM_KF_SPU) && (defined(CONFIG_BCM_SPU) || defined(CONFIG_BCM_SPU_MODULE))
+	if (err == 0)
+		xfrm_garbage_collect(net);
+#endif
 	err2 = unicast_flush_resp(sk, hdr);
 	if (err || err2) {
 		if (err == -ESRCH) /* empty table - old silent behavior */