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-rw-r--r--test/template_ipsec.py16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/template_ipsec.py b/test/template_ipsec.py
index 1b9a3796c15..78d75844d5d 100644
--- a/test/template_ipsec.py
+++ b/test/template_ipsec.py
@@ -307,7 +307,23 @@ class IpsecTra4Tests(object):
seq_num=234))
self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ # move VPP's SA to just before the seq-number wrap
+ self.vapi.cli("test ipsec sa %d seq 0xffffffff" % p.scapy_tra_sa_id)
+
+ # then fire in a packet that VPP should drop becuase it causes the
+ # seq number to wrap
+ pkt = (Ether(src=self.tra_if.remote_mac,
+ dst=self.tra_if.local_mac) /
+ p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
+ dst=self.tra_if.local_ip4) /
+ ICMP(),
+ seq_num=236))
+ self.send_and_assert_no_replies(self.tra_if, [pkt])
+ self.assert_packet_counter_equal(
+ '/err/%s/sequence number cycled' % self.tra4_encrypt_node_name, 1)
+
# move the security-associations seq number on to the last we used
+ self.vapi.cli("test ipsec sa %d seq 0x15f" % p.scapy_tra_sa_id)
p.scapy_tra_sa.seq_num = 351
p.vpp_tra_sa.seq_num = 351