From 7834d64e2717a7a7aa13886db30dd8fb334f6b65 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Sat, 6 Nov 2021 03:36:55 +0100
Subject: [PATCH] lib/config/legacy: treat single eth0 as wan port

---
 nix/lib/config/legacy.nix | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/nix/lib/config/legacy.nix b/nix/lib/config/legacy.nix
index be81165..84e2b6f 100644
--- a/nix/lib/config/legacy.nix
+++ b/nix/lib/config/legacy.nix
@@ -443,11 +443,23 @@ in
           in
             if model ? ports
             then
-              lib.optionalAttrs (builtins.length wanTargets > 0) {
-                "${builtins.head wanTargets}".ports = getPorts "wan";
-              } // lib.optionalAttrs (ap ? lan-access) {
-                "${ap.lan-access}".ports = getPorts "lan.*";
+              if model.ports == [ {
+                   interface = "eth0";
+                   port = "lan";
+                   type = "phys";
+                 } ] && builtins.length wanTargets > 0
+              then {
+                # Only 1 Ethernet port, treat as uplink
+                "${builtins.head wanTargets}".ports = [ "eth0" ];
               }
+              else
+                lib.optionalAttrs (builtins.length wanTargets > 0) {
+                  "${builtins.head wanTargets}".ports = getPorts "wan";
+                } // lib.optionalAttrs (ap ? lan-access) {
+                  "${ap.lan-access}".ports = self.lib.unique (
+                    getPorts "lan.*"
+                  );
+                }
             else
               builtins.trace "No known ports for OpenWRT model ${ap.model}"
                 {};