no matter what modem or firmware, it goes off after 1 hour

[tidyshopz]

hi, im in a vm area and have tried many different things (such as nic mac changing, using sigma x2, haxorware 39, sb5100mod,etc, i have used lots of different macs but without fail, nomatter what i do, the modem goes off after an hour or restart and the previously working mac is no longer working after that!

anyone know what my isp is doing? is there a workaround? is it something to do with the lease?

thanks for any advice