On Thu, May 04, 2023 at 01:22:40PM -0400, Lee wrote: > OK.. I'll try to figure out how to modify whatever in /etc/NetworkManager
I've been told that Network Manager will ignore any interfaces that are defined in /etc/network/interfaces. So the correct way to set up a static address on that interface would be to add it in /e/n/i and simply don't touch Network Manager at all. auto lo iface lo inet loopback auto enp1s0 iface enp1s0 inet static address 192.168.x.y/24 # gateway 192.168.x.1 if you need this to be the default route up sysctl blah blah blah Also, having "auto enp1s0" here will tell systemd that this interface is one that matters, and that this interface needs to be up before it can activate any services that depend on the "network being up". I have no idea how that works with N-M because I've never used N-M. I can't help you with IPv6.