My router, a Dlink, has a web interface, its great.
anyway about Linux and hardware. More and more stuff is being ported to linux, or is being reverse enginered.
One by one big companies are seeing the light IBM, HP,etc. and soon the basic hardware manufacturers will as well.
you have to remember no one is in business to make a product or to provide a service, your in business to make money nothing else, so if a hardware company sees money in Linux compatibility it'll happen if not you get the idea.
So compatability will only grow with popularity, popularity will only grow with compatability
kinda sucks but its workn' so far.