extract warn() function
Revert "hardcode eth0 to 192.168.124.10"

This reverts commit c922abfc0155fbc283b1b21833db713a06b4eafc.

This should only have been pushed to the appliance branch.
Revert "remove eth1 config"

This reverts commit bc48e6ca1fb07b1b0e0270765139472d9d5f3e7e.

This should only have been pushed to the appliance branch.
trim comments from ifcfg-eth0 and ifcfg-eth1

This makes it easy to see the configs at a glance.