Automatic configuration script not working

FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
Windows 7 32 bit
Windows 7 64 bit

A DESCRIPTION OF THE PROBLEM :
In our Company we use a proxysystem for the internet access.

Since we upgraded from Java 7u67 to Java 7u71/u72 we have problems with the following java configuration settings:

"automatically detect proxy settings"
"use automatic confighuration script"

With these two settings JAVA can't read our wpad. This happens because the new java versions have problems when the function "isInNet" will be used in a wpad - script.

REGRESSION. Last worked in version 7u67

ADDITIONAL REGRESSION INFORMATION:
For additional informations another ticket exists on following URL:

https://bugs.openjdk.java.net/browse/JDK-8061644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a new WPAD - PAC file with the following content:


function FindProxyForURL (url, host)
{
        if (isPlainHostName (host) ||
                isInNet (host,"192.168.0.0","255.255.0.0")
                )
                {
                        return "DIRECT";
                }

        else
                {
                        return "PROXY proxyserver:8080;"
                }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Java can't read the wpad file.

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Actually I deleted all "isinnet" functions from our WPAD script. But this can't be a solution because with Java7u67 this function did work!