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-rw-r--r--test/test_vxlan.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/test/test_vxlan.py b/test/test_vxlan.py
index ee829a31a28..6bdcb258bcd 100644
--- a/test/test_vxlan.py
+++ b/test/test_vxlan.py
@@ -101,12 +101,14 @@ class TestVxlan(BridgeDomain, VppTestCase):
vni_start = 10000
vni_end = vni_start + n_shared_dst_tunnels
for vni in range(vni_start, vni_end):
- cls.vapi.vxlan_add_del_tunnel(
+ r = cls.vapi.vxlan_add_del_tunnel(
src_addr=cls.pg0.local_ip4n,
dst_addr=cls.mcast_ip4n,
mcast_sw_if_index=1,
vni=vni,
is_add=is_add)
+ if r.sw_if_index == 0xffffffff:
+ raise "bad sw_if_index"
@classmethod
def add_shared_mcast_dst_load(cls):