If solution by @Melvyn does not work, as an alternative you can set you network adapter to be bridged.
Network -> then change
Attached to to Bridged Adapter.
You should be able to call parent by it's hostname or external IP address you can get it by going to Command prompt and typing
Update If you are debugging with Visual Studio and using IIS Express.
find your website in
<configuration>/<system.applicationHost>/<sites>/<site> (name can be deceptive try checking location on the disk in
then add into
<bindings> section new binding
<binding protocol="http" bindingInformation="*:50766:localhost" />
<binding protocol="http" bindingInformation="*:50766:48qzr12" />
where bindingInformation is
Hope this saves you some time.