[Kumabjorn]

Originally Posted by taming

Your D-Lin DIR-655 has a Guest Zone According to the article below you can limit bandwidth for it in traffic management. I have the same router.

http://www.rarst.net/hardware/guest-zone/

I have now had the time to make the change.
However, in my setup all I can do is create a Guest Zone. I have no settings for how many IP addresses I allow, nor for how much bandwidth I'm willing to allocate. The only thing I think I can fiddle with are some time limitations, like on between 6am and 5pm every weekday.