nixos/easytier: document 2.7.0 configuration changes

nixos/doc/manual/release-notes/rl-2611.section.md

@@ -180,6 +180,18 @@
 
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
+- `easytier` has been updated to 2.7.0 and is stricter about its configuration:
+
+  - [`services.easytier.instances.<name>.configServer`](#opt-services.easytier.instances._name_.configServer)
+    requires a full URL such as `udp://example.com:22020/<token>`; the bare
+    `<token>` shorthand for the official server was removed.
+  - The WireGuard portal no longer accepts `client_cidr` or `wg://host:port/CIDR`.
+    Set `wireguard_private_key` and list the clients under
+    `vpn_portal_config.clients` with a `virtual_ip` each.
+  - Unknown keys in the `[flags]` table are rejected instead of being ignored, so
+    a stale flag now stops the instance with `failed to parse flags`
+    ([upstream #2670](https://github.com/EasyTier/EasyTier/issues/2670)).
+
 - `services.music-assistant` no longer ships the service API credentials that upstream bundles
   only in its official release builds. Providers that rely on them (`spotify`, `qobuz`,
   `apple_music`, `theaudiodb`, `fanarttv`) no longer work out of the box. Register your own

nixos/modules/services/networking/easytier.nix

@@ -134,7 +134,8 @@ let
             except `hostname` will be ignored. Valid formats are:
 
             - full uri for custom server: `udp://example.com:22020/<token>`
-            - username only for official server: `<token>`
+
+            Since 2.7.0 a full URL is required; a bare `<token>` is rejected.
           '';
           example = "udp://example.com:22020/myusername";
         };

pkgs/by-name/ea/easytier/service.nix

@@ -50,7 +50,8 @@ in
           except {option}`easytier.settings.hostname` will be ignored. Valid formats are:
 
           - full uri for custom server: `udp://example.com:22020/<token>`
-          - username only for official server: `<token>`
+
+          Since 2.7.0 a full URL is required; a bare `<token>` is rejected.
         '';
         example = "udp://example.com:22020/myusername";
       };