curl --request PUT \
  --url https://api.gcore.com/cloud/v1/ports/{project_id}/{region_id}/{port_id}/allow_address_pairs \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "allowed_address_pairs": [
    {
      "ip_address": "192.168.123.20",
      "mac_address": "00:16:3e:f2:87:16"
    },
    {
      "ip_address": "192.168.0.0/17",
      "mac_address": "00:16:3e:f2:87:89"
    }
  ],
  "instance_id": "bc688791-f1b0-44eb-97d4-07697294b1e1",
  "network_id": "351b0dd7-ca09-431c-be53-935db3785067",
  "port_id": "1f0ca628-a73b-42c0-bdac-7b10d023e097"
}'

{
  "allowed_address_pairs": [
    {
      "ip_address": "192.168.123.20",
      "mac_address": "00:16:3e:f2:87:16"
    },
    {
      "ip_address": "192.168.0.0/17",
      "mac_address": "00:16:3e:f2:87:89"
    }
  ],
  "instance_id": "bc688791-f1b0-44eb-97d4-07697294b1e1",
  "network_id": "351b0dd7-ca09-431c-be53-935db3785067",
  "port_id": "1f0ca628-a73b-42c0-bdac-7b10d023e097"
}