From bd92610a98ef462c88879ceb296db2a3ccf2442a Mon Sep 17 00:00:00 2001
From: yukkop <hectic.yukkop@gmail.com>
Date: Tue, 9 Jun 2026 15:43:23 +0000
Subject: [PATCH] feat: floating ip

---
 nixos/module/hectic/hardware/hetzner-cloud.nix | 10 +++++++++-
 nixos/system/hectic-lab/hectic-lab.nix         |  1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/nixos/module/hectic/hardware/hetzner-cloud.nix b/nixos/module/hectic/hardware/hetzner-cloud.nix
index 32e99714..d3316f0c 100644
--- a/nixos/module/hectic/hardware/hetzner-cloud.nix
+++ b/nixos/module/hectic/hardware/hetzner-cloud.nix
@@ -51,6 +51,14 @@ in {
         
       '';
     };
+    floatingIpv4 = lib.mkOption {
+      type = with lib.types; nullOr (strMatching "^([0-9]{1,3}\\.){3}[0-9]{1,3}$");
+      default = null;
+      example = "188.243.124.247";
+      description = ''
+        Optional Hetzner Floating IPv4 configured as `/32` on the primary interface.
+      '';
+    };
     device = lib.mkOption {
       type = lib.types.str;
       default = if isNewer then "/dev/nvme0n1" else "/dev/sda";
@@ -95,7 +103,7 @@ in {
         address = [
           "${cfg.ipv4}/32"
           "${cfg.ipv6}::/64"
-        ];
+        ] ++ lib.optional (cfg.floatingIpv4 != null) "${cfg.floatingIpv4}/32";
         routes = [
           { Gateway = "172.31.1.1"; GatewayOnLink = true; }
           { Gateway = "fe80::1"; }
diff --git a/nixos/system/hectic-lab/hectic-lab.nix b/nixos/system/hectic-lab/hectic-lab.nix
index 7022ec06..842c1ffc 100644
--- a/nixos/system/hectic-lab/hectic-lab.nix
+++ b/nixos/system/hectic-lab/hectic-lab.nix
@@ -80,6 +80,7 @@ in {
       enable                 = true;
       networkMatchConfigName = "enp1s0";
       ipv4                   = "128.140.75.58";
+      floatingIpv4           = "78.47.243.0";
       ipv6                   = "2a01:4f8:c2c:d54a";
     };
     services.matrix = {