Assuming that your PC is running Linux, I suggest you to install openvswitch on it.

The steps to follow will be as following.

1. install the openvswitch and necessary packages.
2. Create a bridge interface
3. Add you interface (one with internet connection) to the bridge
4. create 2 vlans and assign ips to it.
5. connect management network nic to one vlan and the floating ip interface to another vlan
6. setup the ip forwarding and routing table accordingly.

then you can access the created vm from your pc. This is by far the simplest solution i have found to setup openstack on a laptop

Note: i am also trying to do the same setup on my laptop. once all the task is done and connection is working fine, i will update my blog and will provide the link.