From e0b593289d1019dcd91ea0b3fa69d2ff4928cd97 Mon Sep 17 00:00:00 2001
From: June <june@jsts.xyz>
Date: Wed, 29 Apr 2026 03:08:20 +0200
Subject: [PATCH] forgejo-actions-runner(host): enable IPv6 support in Docker

Enable the relevant config option and move to new network with an
explicit IPv6, because otherwise there's no default v6 route and v6 in
the Docker containers doesn't work.
---
 config/hosts/forgejo-actions-runner/configuration.nix | 5 ++++-
 config/hosts/forgejo-actions-runner/docker.nix        | 3 +++
 config/hosts/forgejo-actions-runner/networking.nix    | 8 ++++----
 deployment_configuration.json                         | 3 ---
 4 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/config/hosts/forgejo-actions-runner/configuration.nix b/config/hosts/forgejo-actions-runner/configuration.nix
index d2a52daa..713e7954 100644
--- a/config/hosts/forgejo-actions-runner/configuration.nix
+++ b/config/hosts/forgejo-actions-runner/configuration.nix
@@ -1,7 +1,10 @@
 { config, pkgs, ... }:
 
 {
-  networking.hostName = "forgejo-actions-runner";
+  networking = {
+    hostName = "forgejo-actions-runner";
+    domain = "hosts.hamburg.ccc.de";
+  };
 
   system.stateVersion = "23.11";
 }
diff --git a/config/hosts/forgejo-actions-runner/docker.nix b/config/hosts/forgejo-actions-runner/docker.nix
index b626e9f9..043f272a 100644
--- a/config/hosts/forgejo-actions-runner/docker.nix
+++ b/config/hosts/forgejo-actions-runner/docker.nix
@@ -9,5 +9,8 @@
       enable = true;
       dates = "weekly";
     };
+    daemon.settings = {
+      ipv6 = true;
+    };
   };
 }
diff --git a/config/hosts/forgejo-actions-runner/networking.nix b/config/hosts/forgejo-actions-runner/networking.nix
index 71aa47ab..0c09edac 100644
--- a/config/hosts/forgejo-actions-runner/networking.nix
+++ b/config/hosts/forgejo-actions-runner/networking.nix
@@ -5,14 +5,14 @@ let
 in {
   networking = {
     interfaces.net0 = {
-      ipv4.addresses = [
+      ipv6.addresses = [
         {
-          address = "172.31.17.155";
-          prefixLength = 25;
+          address = "2a00:14b0:42:102::18";
+          prefixLength = 64;
         }
       ];
     };
-    defaultGateway = "172.31.17.129";
+    defaultGateway6 = "2a00:14b0:42:102::1";
     nameservers = [ "212.12.50.158" "192.76.134.90" ];
     search = [ "hamburg.ccc.de" ];
   };
diff --git a/deployment_configuration.json b/deployment_configuration.json
index 9a768bf3..eddd7b01 100644
--- a/deployment_configuration.json
+++ b/deployment_configuration.json
@@ -9,9 +9,6 @@
     "git": {
       "targetHostname": "git.hamburg.ccc.de"
     },
-    "forgejo-actions-runner": {
-      "targetHostname": "forgejo-actions-runner-intern.hamburg.ccc.de"
-    },
     "woodpecker": {
       "targetHostname": "woodpecker-intern.hamburg.ccc.de"
     },