diff --git a/ops/nixos/frantech-las01/default.nix b/ops/nixos/frantech-las01/default.nix
index e9b879a875..ec46492968 100644
--- a/ops/nixos/frantech-las01/default.nix
+++ b/ops/nixos/frantech-las01/default.nix
@@ -7,64 +7,21 @@ let
   inherit (depot.ops) secrets;
 in {
   imports = [
-    ../../../third_party/nixpkgs/nixos/modules/profiles/qemu-guest.nix
-    ../lib/low-space.nix
-    ../lib/coredns/default.nix
+    ../lib/frantech.nix
   ];
 
-  boot.initrd.availableKernelModules = [
-    "ata_piix"
-    "uhci_hcd"
-    "virtio_pci"
-    "virtio_scsi"
-    "sr_mod"
-    "virtio_blk"
-  ];
-  boot.kernelModules = [ "kvm-amd" ];
-
-  # Use GRUB.
-  boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
-  boot.loader.grub.device = "/dev/vda";
-
-  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/vda1";
-      fsType = "ext4";
-    };
-  };
-
-  nix.maxJobs = lib.mkDefault 1;
-
-  # Networking!
   networking = {
     hostName = "frantech-las01";
-    domain = "as205479.net";
     hostId = "2b6a8f37";
 
-    nameservers = [
-      "2001:4860:4860::8888"
-      "2001:4860:4860::8844"
-      "8.8.8.8"
-      "8.8.4.4"
-    ];
-    defaultGateway = {
-      address = "205.185.116.1";
-      interface = "ens3";
-    };
-    defaultGateway6 = {
-      address = "2605:6400:20::1";
-      interface = "ens3";
-    };
+    defaultGateway.address = "205.185.116.1";
+    defaultGateway6.address = "2605:6400:20::1";
     interfaces.ens3 = {
       ipv4.addresses = [{ address = "205.185.116.42"; prefixLength = 24; }];
       ipv6.addresses = [{ address = "2605:6400:20:179b::1"; prefixLength = 48; }];
     };
   };
   my.ip.tailscale = "100.127.132.77";
-  my.coredns.bind = [ "ens3" "tailscale0" "127.0.0.1" "::1" ];
 
   system.stateVersion = "21.05";
 }
diff --git a/ops/nixos/frantech-lux01/default.nix b/ops/nixos/frantech-lux01/default.nix
index eb3235db49..99bcfe5e94 100644
--- a/ops/nixos/frantech-lux01/default.nix
+++ b/ops/nixos/frantech-lux01/default.nix
@@ -7,64 +7,21 @@ let
   inherit (depot.ops) secrets;
 in {
   imports = [
-    ../../../third_party/nixpkgs/nixos/modules/profiles/qemu-guest.nix
-    ../lib/low-space.nix
-    ../lib/coredns/default.nix
+    ../lib/frantech.nix
   ];
 
-  boot.initrd.availableKernelModules = [
-    "ata_piix"
-    "uhci_hcd"
-    "virtio_pci"
-    "virtio_scsi"
-    "sr_mod"
-    "virtio_blk"
-  ];
-  boot.kernelModules = [ "kvm-amd" ];
-
-  # Use GRUB.
-  boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
-  boot.loader.grub.device = "/dev/vda";
-
-  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/vda1";
-      fsType = "ext4";
-    };
-  };
-
-  nix.maxJobs = lib.mkDefault 1;
-
-  # Networking!
   networking = {
     hostName = "frantech-lux01";
-    domain = "as205479.net";
     hostId = "92a60220";
 
-    nameservers = [
-      "2001:4860:4860::8888"
-      "2001:4860:4860::8844"
-      "8.8.8.8"
-      "8.8.4.4"
-    ];
-    defaultGateway = {
-      address = "107.189.4.1";
-      interface = "ens3";
-    };
-    defaultGateway6 = {
-      address = "2605:6400:30::1";
-      interface = "ens3";
-    };
+    defaultGateway.address = "107.189.4.1";
+    defaultGateway6.address = "2605:6400:30::1";
     interfaces.ens3 = {
       ipv4.addresses = [{ address = "107.189.4.182"; prefixLength = 24; }];
       ipv6.addresses = [{ address = "2605:6400:30:f1d2::1"; prefixLength = 48; }];
     };
   };
   my.ip.tailscale = "100.125.159.57";
-  my.coredns.bind = [ "ens3" "tailscale0" "127.0.0.1" "::1" ];
 
   system.stateVersion = "21.05";
 }
diff --git a/ops/nixos/frantech-nyc01/default.nix b/ops/nixos/frantech-nyc01/default.nix
index 57a82a1ddc..ab91db4ef9 100644
--- a/ops/nixos/frantech-nyc01/default.nix
+++ b/ops/nixos/frantech-nyc01/default.nix
@@ -8,66 +8,22 @@ let
   machineSecrets = secrets.machineSpecific.frantech-nyc01;
 in {
   imports = [
-    ../../../third_party/nixpkgs/nixos/modules/profiles/qemu-guest.nix
-    ../lib/low-space.nix
-    ../lib/coredns/default.nix
+    ../lib/frantech.nix
     ../lib/bgp.nix
-    ../lib/minotarproxy.nix
   ];
 
-  boot.initrd.availableKernelModules = [
-    "ata_piix"
-    "uhci_hcd"
-    "virtio_pci"
-    "virtio_scsi"
-    "sr_mod"
-    "virtio_blk"
-  ];
-  boot.kernelModules = [ "kvm-amd" ];
-
-  # Use GRUB.
-  boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
-  boot.loader.grub.device = "/dev/vda";
-
-  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/vda1";
-      fsType = "ext4";
-    };
-  };
-
-  nix.maxJobs = lib.mkDefault 1;
-
-  # Networking!
   networking = {
     hostName = "frantech-nyc01";
-    domain = "as205479.net";
     hostId = "251837df";
 
-    nameservers = [
-      "2001:4860:4860::8888"
-      "2001:4860:4860::8844"
-      "8.8.8.8"
-      "8.8.4.4"
-    ];
-    defaultGateway = {
-      address = "199.195.254.1";
-      interface = "ens3";
-    };
-    defaultGateway6 = {
-      address = "2605:6400:10::1";
-      interface = "ens3";
-    };
+    defaultGateway.address = "199.195.254.1";
+    defaultGateway6.address = "2605:6400:10::1";
     interfaces.ens3 = {
       ipv4.addresses = [{ address = "199.195.254.60"; prefixLength = 24; }];
       ipv6.addresses = [{ address = "2605:6400:10:c77::1"; prefixLength = 48; }];
     };
   };
   my.ip.tailscale = "100.99.236.25";
-  my.coredns.bind = [ "ens3" "tailscale0" "127.0.0.1" "::1" ];
 
   services.lukegbgp = let local = {
     asn = 205479;
diff --git a/ops/nixos/lib/frantech.nix b/ops/nixos/lib/frantech.nix
new file mode 100644
index 0000000000..bdb636afe2
--- /dev/null
+++ b/ops/nixos/lib/frantech.nix
@@ -0,0 +1,59 @@
+# SPDX-FileCopyrightText: 2020 Luke Granger-Brown <depot@lukegb.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+{ depot, lib, pkgs, rebuilder, config, ... }:
+let
+  inherit (depot.ops) secrets;
+in {
+  imports = [
+    ../../../third_party/nixpkgs/nixos/modules/profiles/qemu-guest.nix
+    ../lib/low-space.nix
+    ../lib/coredns/default.nix
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sr_mod"
+    "virtio_blk"
+  ];
+  boot.kernelModules = [ "kvm-amd" ];
+
+  # Use GRUB.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.version = 2;
+  boot.loader.grub.device = "/dev/vda";
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/vda1";
+      fsType = "ext4";
+    };
+  };
+
+  nix.maxJobs = lib.mkDefault 1;
+
+  # Networking!
+  networking = {
+    domain = "as205479.net";
+
+    nameservers = [
+      "2001:4860:4860::8888"
+      "2001:4860:4860::8844"
+      "8.8.8.8"
+      "8.8.4.4"
+    ];
+    defaultGateway = {
+      interface = "ens3";
+    };
+    defaultGateway6 = {
+      interface = "ens3";
+    };
+  };
+  my.coredns.bind = [ "ens3" "tailscale0" "127.0.0.1" "::1" ];
+}