From 3a0fe99688d4e4e57fd5ec547985b8fff2d1ba66 Mon Sep 17 00:00:00 2001
From: JuliusFreudenberger <julius+git@jfreudenberger.de>
Date: Thu, 21 May 2026 00:47:36 +0200
Subject: [PATCH] Add option for docker subnet for netbird webproxy network

The same subnet on different routing peers makes problems for the
reverse proxy feature. Therefore add the possibility to set a different
subnet on different hosts.
---
 modules/netbird-client.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/modules/netbird-client.nix b/modules/netbird-client.nix
index 2edf19d..f6429f9 100644
--- a/modules/netbird-client.nix
+++ b/modules/netbird-client.nix
@@ -37,6 +37,11 @@ in {
       description = "Configuration for docker connection";
       type = clientConfiguration;
     };
+    dockerSubnet = lib.mkOption {
+      description = "Second part of ipv4 subnet";
+      type = lib.types.str;
+      default = "20";
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -94,7 +99,7 @@ in {
         Type = "oneshot";
       };
       script = ''
-        docker network inspect webproxy || docker network create webproxy --ipv4 --ipv6 --subnet=172.20.0.0/16 --gateway=172.20.0.1
+        docker network inspect webproxy || docker network create webproxy --ipv4 --ipv6 --subnet=172.${cfg.dockerSubnet}.0.0/16 --gateway=172.${cfg.dockerSubnet}.0.1
       '';
     };
   };