Unfortunately it is well detailed in the contract, and such, I can't do much against it (lately here in Budapest apartment prices went sky high, and even with a quite good salary, you can't really afford a place alone).
And he actively refuses to add new devices that are not 'vital' - because, yes, you guessed right, the longer the MAC whitelist, the less responsive the whole system is. It also happens that my landlord is a paranoid freak who thinks everyone will start uploading child porn from his home network, if he does not enable the hidden SSID and MAC whitelist on the router. For a single guy in his early 20's, it's a great, and cheap solution. It happens that I'm renting a room, and not a complete apartment. However, this case is driving me nuts now for the nth day in a row. Newcomer to the forums, but not to RasPi boards.