Hi, I have tested the os-virtual-interfaces API described here http://api.openstack.org/api-ref-compute.html#compute_server-addresses, but got the 500 error and the response Message is "{"computeFault": {"message": "The server has either erred or is incapable of performing the requested operation.", "code": 500}}". My request message is : GET /v2/{tenant_id}/servers/{server_id}/os-virtual-interfaces HTTP/1.1 Host:{ ip}:8774 Content-Type: application/json Accept: application/json X-Auth-Token:0065fb7de25146aeb70c0c207db18ad7 Is there anything wrong? Does anyone know how to get the macaddress of a vm instance? By the way, does anyone know how to get the ipaddress of a host by a restful API? Thanks, lisa -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20131107/0fd8b78a/attachment.html>