agreed, but im pretty sure at least in the past my machines have asked permission to update and not just done it automatically.
the cable company did this to you.
you are setup as though you are running a seperate router. you should have a 192.168.1.xxx and a 10.0.0.xxx but the second one should be hidden from you(kind of lie a highway exit ramp.
if you pm me we can figure out if it is easier to reconfigure the modem (might disconnect other devices.)
is this your office, is plotter and cutter part of home business?
my only point is we have 24 devices on the office network (i use print servers on everthing)
and probably 37 devices at home. lets dothis in the least number of steps, not open a can of worms
it's probably easier to reconfigure the plotter to the new subnet, but not if you spend 2 weeks with family members saying "why doesn't this work any more?"
i will be happy to work with you. pm me & i will send my cell number
let me know what time, todau, sunday or Monday works for you
allow like an hour, in case things don't go our way & what is your plotter model?
you can call cable company tech support and ask for help, but that is a crap shoot. if cable companies understood the importance of preserving existing devices on a network, people like me wouldn't have a business.