It should also be noted that Libertarians, like any group of people, are not a hive mind who are going to have the same exact thoughts on every political issue. A few small diverges doesn't mean they'd be "Not a REAL Libertarian", it would simply mean they're human and don't agree with their group 100% of the time.
Yes, but there are limits. Anyone who does not support less taxes and less laws and a right, leave-it-be economy is not a libertarian.