diff --git a/CLAUDE.md b/CLAUDE.md
index 73ccc15..ff28eab 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -133,9 +133,10 @@ nixosSystem {
 ```
 
 Platforms: `linode`, `proxmox`, `lxc`. Build types: `minimal`, `nix-cache`,
-`server`, `docker`, `gui`, `pxe-boot`. Not every combination is built — e.g.
-`pxe-boot` has no `linode` variant (PXE/DHCP/TFTP need LAN L2 adjacency a
-Linode VPS doesn't have). Treat `flake.nix`'s `generatedTargets` as the source
+`server`, `docker`, `gui`, `pxe-boot`, `tailscale-exit-node`. Not every
+combination is built — e.g. `pxe-boot` has no `linode` variant (PXE/DHCP/TFTP
+need LAN L2 adjacency a Linode VPS doesn't have). Treat `flake.nix`'s
+`generatedTargets` as the source
 of truth for which hosts exist — `README.md`, `AGENTS.md`,
 `docs/flake-lock-automation.md`, and the CI eval workflows
 (`.github/workflows/check-nixos.yml`, `.gitea/workflows/check-nixos.yml`) list
diff --git a/README.md b/README.md
index 643798a..2287756 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ pieces composed in `flake.nix`:
 
 - **Platforms** (what it runs on): `linode`, `proxmox`, `lxc`
 - **Build types** (what it's for): `minimal`, `nix-cache`, `server`, `docker`,
-  `gui`, `pxe-boot`
+  `gui`, `pxe-boot`, `tailscale-exit-node`
 
 Not every combination exists — `pxe-boot` has no `linode` variant, since
 PXE/DHCP/TFTP need LAN L2 adjacency that a Linode VPS doesn't have. The full
@@ -26,6 +26,7 @@ list:
 | `linode-docker` / `proxmox-docker` / `lxc-docker` | Docker host for the main container stack (`proxmox-docker` is the real, deployed one — previously the flat `docker` target) |
 | `linode-gui` / `proxmox-gui` / `lxc-gui` | Cinnamon desktop workstation (`proxmox-gui` is the real, deployed one — previously the flat `nixos` target) |
 | `proxmox-pxe-boot` / `lxc-pxe-boot` | HTTP/iPXE boot asset host (`proxmox-pxe-boot` is the real, deployed one — previously the flat `pxe-boot` target) |
+| `linode-tailscale-exit-node` / `proxmox-tailscale-exit-node` / `lxc-tailscale-exit-node` | Tailscale exit node (no deployed target yet; `lxc-tailscale-exit-node` is the one planned for actual use) |
 
 The "(real, deployed)" targets above are also tracked machine-readably in
 `variables.nix`'s `deployedTargets` — keep both in sync when a deployment
diff --git a/flake.nix b/flake.nix
index f4beec8..e2f36d7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -94,6 +94,10 @@
 
         proxmox-pxe-boot = mkTarget { platform = "proxmox"; buildType = "pxe-boot"; hostPath = ./hosts/pxe-boot/host.nix; };
         lxc-pxe-boot = mkTarget { platform = "lxc"; buildType = "pxe-boot"; hostPath = ./hosts/pxe-boot/host.nix; };
+
+        linode-tailscale-exit-node = mkTarget { platform = "linode"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
+        proxmox-tailscale-exit-node = mkTarget { platform = "proxmox"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
+        lxc-tailscale-exit-node = mkTarget { platform = "lxc"; buildType = "tailscale-exit-node"; hostPath = ./hosts/tailscale-exit-node/host.nix; };
       };
 
       # Auto-install environments (migrated from the former nix-auto-installer
diff --git a/hosts/tailscale-exit-node/host.nix b/hosts/tailscale-exit-node/host.nix
new file mode 100644
index 0000000..26deb46
--- /dev/null
+++ b/hosts/tailscale-exit-node/host.nix
@@ -0,0 +1,12 @@
+_:
+
+{
+  networking.hostName = "exit-node";
+
+  # No networking.hostId: only ZFS-touching hosts (server, docker) need one
+  # for pool-import safety, and this host does neither.
+
+  # A genuinely new host (not a pre-refactor carry-over), so it tracks the
+  # flake's current nixpkgs release rather than being pinned to an older one.
+  system.stateVersion = "26.05";
+}
diff --git a/modules/build-types/tailscale-exit-node.nix b/modules/build-types/tailscale-exit-node.nix
new file mode 100644
index 0000000..c96ddc0
--- /dev/null
+++ b/modules/build-types/tailscale-exit-node.nix
@@ -0,0 +1,21 @@
+{ ... }:
+
+{
+  imports = [
+    ../tailscale/exit-node.nix
+  ];
+
+  # "server", not "both": this build type only ever advertises itself as an
+  # exit node (see ../tailscale/exit-node.nix) -- it doesn't advertise LAN
+  # subnet routes, so it doesn't need the "client"-side loose reverse-path
+  # filtering that "both" would also turn on. Deliberately left unbundled
+  # from LAN-subnet-route advertisement so this build type stays valid on
+  # every platform, including linode (a remote VPS with no network path to
+  # the home LAN at all).
+  services.tailscale.useRoutingFeatures = "server";
+
+  # Forwarded exit-node traffic arrives on tailscale0 already
+  # tailscale-authenticated -- the firewall's normal per-port allow-list
+  # would otherwise drop it. Standard NixOS/Tailscale exit-node guidance.
+  networking.firewall.trustedInterfaces = [ "tailscale0" ];
+}
diff --git a/modules/tailscale/exit-node.nix b/modules/tailscale/exit-node.nix
index 73d9f8a..f23fda8 100644
--- a/modules/tailscale/exit-node.nix
+++ b/modules/tailscale/exit-node.nix
@@ -1,12 +1,19 @@
-{ vars, ... }:
+_:
 
 {
   services.tailscale = {
     enable = true;
 
-    extraUpFlags = [
+    # extraSetFlags (tailscale set, via the always-on tailscaled-set
+    # service), not extraUpFlags -- extraUpFlags is only ever applied by
+    # tailscaled-autoconnect, which itself only runs when
+    # services.tailscale.authKeyFile is set (nothing in this repo sets one,
+    # so tailscale up is a manual, one-time operator step on every host that
+    # uses this service). extraSetFlags has no such gate, so
+    # --advertise-exit-node self-reapplies on every boot once the operator
+    # has authenticated the node once.
+    extraSetFlags = [
       "--advertise-exit-node"
-      "--advertise-routes=${vars.lanCidr}"
     ];
   };
 }