> The gotcha is if you have an ISP supplied router which has no DHCP interface at all: no way to disable it, no way to customize DNS. The way I get around this

> The gotcha is if you have an ISP supplied router which has no DHCP interface at all: no way to disable it, no way to customize DNS. The way I get around this is by putting all of my devices behind another router, and treating the ISP router as if it is part of an external network. It introduces a second layer of NAT (ISP router gives my router a 192.168.0.x address, which it treats as its WAN IP; devices get a 192.168.1.x address), but in practice it's caused me no problems. I've been running a similar setup for close to a decade now.