I'm not sure it's a good idea to buy a new modem if I decide to upgrade to fibre
Sorry I should have been less technical, the 9970 can also be used on fibre (VDSL) as I mentioned in my first reply.
If you upgrade to fibre Bt business may supply the business hub 5 that can be used in modem mode so maybe don't bother with a new one.
What model is the netgear.
I don't have a hostname
you just need a program/script on a connected device (maybe the linux server)