I have an stb as well as the 20Mb sacm and the only time we ever have to go through the provisioning page(10.xx.xx.xx) for the stb is when i`ve stuck a new(to the stb) pc or nic on.I usually have to add a new name for the pc/nic(and delete an old one first as all 5 are used up)
I`m certainlly not a guru but i do use linux as OS
and as our router/gateway/firewall, although not a completely seperate box atm and just using my main desktop to supply the 20Mb to a little hub i have then on to the relevant rooms.
Makes monitoring what my lot are up to a lot easier
