Fixed create_port with fixed_ips for public network

Fixed create_port with fixed_ips for public network

RM9593
in regards to: address=3232235876

*sigh* I know what the rest of the tests do but we're trying to get away from magical numbers. If you could use netaddr to create the IPAddress then get the value and pass that it'd be super appreciated. You do not need to fix the old tests. We're just trying to stop the propagation of terribleness.