I'm attempting to refactor old perl code to support some new IPV6-only hosts. 

In testing the basic '`connect.pl`' script, it fails with 

Unsupported IP address format:

```
#/usr/lib/vmware-vcli/apps/general/connect.pl --url https://fe80::b6b5:2fff:fe5a:c5d8:443/sdk --username root --password pw
Unsupported IP address format

```

I also wrote a little test script to exercise Util::connect, and it fails in the same way.

Caveats:

I'm using `VMware-vSphere-Perl-SDK-5.1.0-780721`.

In my scenario, the `ESXi` hosts run `IPV6` only, and the guests will run `IPV4` only.