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-rwxr-xr-xsmoketest/scripts/cli/test_service_dhcp-server.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/smoketest/scripts/cli/test_service_dhcp-server.py b/smoketest/scripts/cli/test_service_dhcp-server.py
index d743b4e28..a544198c6 100755
--- a/smoketest/scripts/cli/test_service_dhcp-server.py
+++ b/smoketest/scripts/cli/test_service_dhcp-server.py
@@ -420,7 +420,9 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
server_identifier = bootfile_server
ipv6_only_preferred = '300'
capwap_access_controller = '192.168.2.125'
- interface_mtu = '1420'
+ # 9216: jumbo-fabric MTU above the former arbitrary 9000 cap
+ # (DHCP option 26 is a full u16)
+ interface_mtu = '9216'
pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
self.cli_set(pool + ['subnet-id', '1'])