This is an old revision of the document!
My notes for the Buffalo WZR-HP-G300NH wireless router, using it together with the Speedport 201 adsl2+ modem. The WZR-HP-G300NH can not work as a dsl modem itself.
OpenWRT is an alternative system. The webinterface has less options than DD-WRT, but on the commandline a package system is available.