The way you have it setup right now will not work. Google Analytics JS code will not send the tracking hit (__utm.gif) to the GA servers.
There are a few options you might want to try:
Use an IP address instead of .local
Turn off domain hashing by setting _setDomainName("none")
The following is from Google Analytics help:
In order for Google Analytics to generate reports for your corporate
intranet usage, your corporate network must be able to reach the
in your browser using one of the following links:
If you can reach one of these URLs from your internal network, you can
use Google Analytics to collect data from your intranet. Your intranet
must also be accessible through a fully qualified domain name such as
work if your intranet can only be accessed using a domain name that
isn't fully qualified, such as http://intranet.
If all fails, consider using Piwik Analytics instead of Google Analytics.