**Issue** 

Leapp checks for, and inhibits, systems with more than 1 eth interface.

    Inhibitor: Unsupported network configuration

This looks for more than 1 eth interface and inhibits.

~~~

    def ethX_count(self, interfaces):
        ethX = re.compile('eth[0-9]+')
        count = 0

    def process(self):
        interfaces = next(self.consume(PersistentNetNamesFacts)).interfaces

        if self.single_eth0(interfaces):
            self.disable_persistent_naming()
        elif len(interfaces) > 1 and self.ethX_count(interfaces) > 0:
            create_report([
                reporting.Title('Unsupported network configuration'),
                reporting.Summary(
                    'Detected multiple physical network interfaces where one or more use kernel naming (e.g. eth0). '
                    'Upgrade process can not continue because stability of names can not be guaranteed. '
                    'Please read the article at https://access.redhat.com/solutions/4067471 for more information.'
                ),
~~~

The article mentioned: https://access.redhat.com/solutions/4067471 tells you to make a udev persistent rule in /etc/udev/rules.d/

Customers who make this file for their eth faces still hit the inhibitor and have to change their system to say anything but eth. 

**Request**
If a customer wants to use eth as names, that should be allowed as long as they've created the persistent udev rule. We need to add a check for a udev configuration file before inhibiting on systems with more than 1 eth interface.