When assigning two interfaces with "bridged-virtual-interface: True" to a single bridge domain, only one of them is assigned.

If this should not be possible, please add check to prevent this configuration. If it should be possible, reproduce with the following steps:

1. create bridge domain:

{ "name": "bd_test", "flood": "true", "forward": "true", "learn": "true", "unknown-unicast-flood": "true", "arp-termination": "true" }

2. add interfaces to bridge domain:
{
"name": "GigabitEthernet0/9/0",
"type": "iana-if-type:ethernetCsmacd",
"enabled": "false",
"v3po:ethernet":

{ "mtu": "9216" }

,
"v3po:l2":

{ "bridge-domain": "bd_test", "split-horizon-group": "1", "bridged-virtual-interface": "true" }

},
{
"name": "GigabitEthernet0/8/0",
"type": "iana-if-type:ethernetCsmacd",
"enabled": "false",
"v3po:ethernet":

{ "mtu": "9216" }

,
"v3po:l2":

{ "bridge-domain": "bd_test", "split-horizon-group": "1", "bridged-virtual-interface": "true" }

}

3. GET operational interface data:
{
"name":"GigabitEthernet0/9/0",
"vpp-vlan:sub-interfaces":{},
"v3po:ethernet":

{"mtu":9216,"duplex":"full"}

,
"speed":1000000000,
"admin-status":"down",
"if-index":7,
"phys-address":"08:00:27:69:f0:f5",
"type":"iana-if-type:ethernetCsmacd",
"oper-status":"down"
},
{
"name":"GigabitEthernet0/8/0",
"vpp-vlan:sub-interfaces":{},
"v3po:ethernet":

{"mtu":9216,"duplex":"full"}

,
"v3po:l2":

{ "bridge-domain":"bd-01", "bridged-virtual-interface":true, "split-horizon-group":2 }

,
"speed":1000000000,
"admin-status":"down",
"if-index":6,
"phys-address":"08:00:27:d5:28:87",
"type":"iana-if-type:ethernetCsmacd",
"oper-status":"down"
}

4. VAT bridge domain dump:
ID LRN FWD FLD BVI #IF
1 1 1 1 6 1

sw_if_index SHG Interface Name
6 1 GigabitEthernet0/9/0