Yeah, that's the kind of stuff that I know how it works from a network protocol standpoint, but have no clue how to configure on any given system, let alone verify I configured it correctly. I installed DD-WRT on my router, hoping it would be easier to set up. The user interface was much easier to navigate, but the labels of the settings were so sparse that I couldn't tell what anything was referring to, even knowing the terminology for the the lower layers of network protocols. I wouldn't be surprised if I never get around to working on it in my lifetime, as long as I can play around with electronics projects.

Regarding Android OS, I'm not convinced it isn't a toy OS. I feel like they threw in the Linux kernel, but didn't bother including most of the useful features, and pat themselves on the back whenever they add one back. It took almost a decade before they figured out that you could install fonts without reinstalling the operating system. If they ever discover DKMS, we can stop throwing our phones away every few years, and have some actually useful hardware. Then again, it took Apple two years to add copy and paste to a phone, so maybe it's an industry-wide problem. If I could buy a modern Jornada 700 series running Linux or BSD, I'd never need to pick up an Android or iOS device again.