To take over IP addresses between virtual servers, execute the following API and set the IP addresses as "allowed_address_pairs".
# curl -X PUT https://networking.jp-east-3.cloud.global.fujitsu.com/v2.0/ports/{ID of the created port} -H 'X-Auth-Token:XXX' -H 'Content-Type:application/json' -H 'Accept:application/json' -d '{"port":{ "allowed_address_pairs" : [{"ip_address":"takeover IP address"}]}}'
