session: fix use-after-free

[vpp.git] / test / template_ipsec.py

diff --git a/test/template_ipsec.py b/test/template_ipsec.py
index c3fc8bd..a4f998e 100644 (file)
--- a/test/template_ipsec.py
+++ b/test/template_ipsec.py
@@ -379,7 +379,7 @@ class IpsecTra4(object):
 
         # a malformed 'runt' packet
         #  created by a mis-constructed SA
-        if (ESP == self.encryption_type):
+        if (ESP == self.encryption_type and p.crypt_algo != "NULL"):
             bogus_sa = SecurityAssociation(self.encryption_type,
                                            p.vpp_tra_spi)
             pkt = (Ether(src=self.tra_if.remote_mac,