+| TC18: Honeycomb modifies sub-interface exact tag match
+| | [Documentation] | Check if Honeycomb can modify a sub-interface with exact\
+| | ... | tag match.
+| | Given Honeycomb configures interface state | ${node} | ${super_if2} | down
+| | And sub-interface Operational Data From Honeycomb Should Be empty
+| | ... | ${node} | ${super_if2} | ${sub_if_id}
+| | And interface Operational Data From VAT Should Be empty
+| | ... | ${node} | ${sub_if2_name}
+| | When Honeycomb creates sub-interface | ${node} | ${super_if2}
+| | ... | ${sub_if_2_match} | ${sub_if_2_tags} | ${sub_if_2_settings}
+| | Then Sub-interface Operational Data From Honeycomb Should Be
+| | ... | ${node} | ${super_if2} | ${sub_if_id} | ${sub_if_2_oper}
+| | And Sub-interface Operational Data From VAT Should Be
+| | ... | ${node} | ${sub_if2_name} | ${sub_if_2_oper}
+| | And sub-interface indices from Honeycomb and VAT should correspond
+| | ... | ${node} | ${super_if2} | ${sub_if_id}
+
+| TC19: Honeycomb configures sub-interface ipv6 address
+| | [Documentation] | Check if Honeycomb can configure an ipv6 address on the\
+| | ... | sub-interface.
+| | ...
+| | Given sub-interface ipv6 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv6 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+| | When Honeycomb sets sub-interface ipv6 address
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+| | Then sub-interface IPv6 address from Honeycomb should contain
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+| | And sub-interface IPv6 address from VAT should contain
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+
+| TC20: Honeycomb removes sub-interface ipv6 address
+| | [Documentation] | Check if Honeycomb can remove configured ipv6 addresses\
+| | ... | from the sub-interface.
+| | ...
+| | Given sub-interface IPv6 address from Honeycomb should contain
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+| | Run Keyword And Continue On Failure
+| | ... | And sub-interface IPv6 address from VAT should contain
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+| | When Honeycomb removes all sub-interface ipv6 addresses
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | Then sub-interface ipv6 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv6 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+
+| TC21: Honeycomb modifies existing sub-interface ipv6 address
+| | [Documentation] | Check if Honeycomb can modify an ipv6 address already\
+| | ... | configured on the sub-interface.
+| | [Teardown] | Honeycomb removes all sub-interface ipv6 addresses
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | Given sub-interface ipv6 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv6 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+| | When Honeycomb sets sub-interface ipv6 address
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6['address']} | ${ipv6['prefix-length']}
+| | And Honeycomb sets sub-interface ipv6 address
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6_2['address']} | ${ipv6_2['prefix-length']}
+| | Then sub-interface IPv6 address from Honeycomb should contain
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv6_2['address']} | ${ipv6_2['prefix-length']}
+| | And sub-interface IPv6 address from VAT should contain
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv6_2['address']} | ${ipv6_2['prefix-length']}
+
+| TC22: Honeycomb can configure unnumbered sub-interface
+| | [Documentation] | Check if Honeycomb can configure an unnumbered interface\
+| | ... | on a sub-interface, borrowing the IP address of 'local0'.
+| | Given sub-interface ipv4 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv4 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+| | And Honeycomb sets interface IPv4 address | ${node}
+| | ... | local0 | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | When Honeycomb adds unnumbered configuration to interface
+| | ... | ${node} | ${super_if}.${sub_if_id} | local0
+| | Then IPv4 address from Honeycomb should be
+| | ... | ${node} | local0 | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And IPv4 address from VAT should be
+| | ... | ${node} | local0
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']} | ${ipv4['netmask']}
+| | And sub-interface ipv4 address from Honeycomb should be
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And sub-interface ipv4 address from VAT should be
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+
+| TC23: Honeycomb removes sub-interface unnumbered configuration
+| | [Documentation] | Check if Honeycomb can remove unnumbered configuration\
+| | ... | from a sub-interface.
+| | [Teardown] | Honeycomb removes interface IPv4 addresses | ${node}
+| | ... | local0
+| | Given IPv4 address from Honeycomb should be
+| | ... | ${node} | local0 | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And IPv4 address from VAT should be
+| | ... | ${node} | local0
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']} | ${ipv4['netmask']}
+| | And sub-interface ipv4 address from Honeycomb should be
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And sub-interface ipv4 address from VAT should be
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | When Honeycomb removes unnumbered configuration from interface
+| | ... | ${node} | ${super_if}.${sub_if_id}
+| | Then IPv4 address from Honeycomb should be
+| | ... | ${node} | local0 | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And IPv4 address from VAT should be
+| | ... | ${node} | local0
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']} | ${ipv4['netmask']}
+| | And sub-interface ipv4 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv4 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+
+| TC24: Honeycomb can configure unnumbered interface using a sub-interface
+| | [Documentation] | Check if Honeycomb can configure an unnumbered interface\
+| | ... | on an interface, borrowing the IP address of a sub-interface.
+| | Given IPv4 address from Honeycomb should be empty | ${node} | local0
+| | And ipv4 address from VAT should be empty | ${node} | local0
+| | And sub-interface ipv4 address from Honeycomb should be empty
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | And sub-interface ipv4 address from VAT should be empty
+| | ... | ${node} | ${sub_if_name}
+| | And Honeycomb sets sub-interface ipv4 address
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | When Honeycomb adds unnumbered configuration to interface
+| | ... | ${node} | local0 | ${super_if}.${sub_if_id}
+| | Then IPv4 address from Honeycomb should be
+| | ... | ${node} | local0 | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And IPv4 address from VAT should be
+| | ... | ${node} | local0
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']} | ${ipv4['netmask']}
+| | And sub-interface ipv4 address from Honeycomb should be
+| | ... | ${node} | ${super_if} | ${sub_if_id}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+| | And sub-interface ipv4 address from VAT should be
+| | ... | ${node} | ${sub_if_name}
+| | ... | ${ipv4['address']} | ${ipv4['prefix-length']}
+