let ext-if = "et0"; shack-ip = "10.42.22.184"; shack-gw = "10.42.20.1"; in { services.udev.extraRules = '' SUBSYSTEM=="net", ATTR{address}=="8c:70:5a:b2:84:58", NAME="wl0" SUBSYSTEM=="net", ATTR{address}=="3c:97:0e:07:b9:14", NAME="${ext-if}" ''; networking = { firewall.enable = true; firewall.allowedTCPPorts = [ 8088 8086 8083 5901 ]; interfaces."${ext-if}".ipv4.addresses = [ { address = shack-ip; prefixLength = 22; } ]; defaultGateway = shack-gw; nameservers = [ "10.42.0.100" "10.42.0.200" ]; }; }