I'm trying to do something about the relentless, ever-increasing onslaught of commercials on my Roku. It was suggested that several domain blocks be set up in my router/modem. However, I can find no way to do this in my router (SmartRG-f61b.) Can anyone recommend an affordable alternative to this router that will let me block several incoming domains (such as doubleclick.net) to kill this intolerable slew of inane, insulting drivel that I'm being forced to endure in ever-increasing amounts? Seven minutes of content interspersed with five minute blocks of commercials has me just about ready to give up TV altogether! Thanks!!