I don’t often muck around with configurations but when I do the key knowledge I previously learned was changed by some update requiring new and improved learning. That in itself isn’t bad, it is quite healthy, but having to hit the books while the building is on fire is a bit frustrating.
I hear you. Just when you think you figured out their better mousetrap, they have to add new gizmos. Once you get competent with IPv4 and routing tables, here comes IPv6. Get good at pulling and terminating Cat 5 cable, they throw Cat 6 in the mix and now you have an advanced architecture to take into account. Due to mobility problems, I spent two years doing remote support on Win and Mac machines while my first leg infection was slowly healing, and dealt almost exclusively with Win XP and 7 appliances, then along comes the first public release of Win 10. We all know how that went. The one saving grace was, I worked here on 3rd shift from my den. I eventually found myself heading out to the fridge and bringing a beer back an hour before my shift was over. *chuckle*