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-rw-r--r--test/test_mtu.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/test_mtu.py b/test/test_mtu.py
index 4159deb414e..ed4fcb57818 100644
--- a/test/test_mtu.py
+++ b/test/test_mtu.py
@@ -113,6 +113,8 @@ class TestMTU(VppTestCase):
# n.show2()
self.validate_bytes(bytes(p[1]), icmp4_reply)
+ self.assert_error_counter_equal("/err/ip4-input/mtu_exceeded", 11)
+
# Now with DF off. Expect fragments.
# First go with 1500 byte packets.
p_payload = UDP(sport=1234, dport=1234) / self.payload(1500 - 20 - 8)
@@ -191,6 +193,8 @@ class TestMTU(VppTestCase):
for p in rx:
self.validate_bytes(bytes(p[1]), icmp6_reply_str)
+ self.assert_error_counter_equal("/err/ip6-input/mtu_exceeded", 9)
+
# Reset MTU
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [current_mtu, 0, 0, 0])