Open Stack

Hi guys.

I'm try to spin up and instance:

$ openstack server create midway --flavor C1.vss.tiny 
--volume midway --nic 
net-id=fd8659cf-8723-4254-bf88-837b37a50a24,v4-fixed-ip=10.0.0.4
Fixed IP address 10.0.0.4 is already in use on instance 
reserved_dhcp_port. (HTTP 400) (Request-ID: 
req-bf34b06c-d0b7-4798-8eeb-9f5bb87348e2)

Having no admin access to the stack - how to troubleshoot 
and ideally resolve it before I have to admins demanding 
action :)
many thanks, L.