diff --git a/.forgejo/workflows/lint.yaml b/.forgejo/workflows/lint.yaml
index 23bf6d2..d29fb6e 100644
--- a/.forgejo/workflows/lint.yaml
+++ b/.forgejo/workflows/lint.yaml
@@ -24,7 +24,7 @@ jobs:
       # work in our environmnet.
       # Rather manually setup python (pip) before instead.
       - name: Run ansible-lint
-        uses: https://github.com/ansible/ansible-lint@v25.9.2
+        uses: https://github.com/ansible/ansible-lint@v25.11.0
         with:
           setup_python: "false"
           requirements_file: "requirements.yml"
diff --git a/inventories/chaosknoten/host_vars/cloud.yaml b/inventories/chaosknoten/host_vars/cloud.yaml
index 0cbcd4d..b6cf771 100644
--- a/inventories/chaosknoten/host_vars/cloud.yaml
+++ b/inventories/chaosknoten/host_vars/cloud.yaml
@@ -1,11 +1,11 @@
 # renovate: datasource=docker depName=git.hamburg.ccc.de/ccchh/oci-images/nextcloud
 nextcloud__version: 32
 # renovate: datasource=docker depName=docker.io/library/postgres
-nextcloud__postgres_version: 15.14
+nextcloud__postgres_version: 15.15
 nextcloud__fqdn: cloud.hamburg.ccc.de
 nextcloud__data_dir: /data/nextcloud
 nextcloud__extra_configuration: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/cloud/nextcloud/extra_configuration.config.php.j2') }}"
 nextcloud__use_custom_new_user_skeleton: true
 nextcloud__custom_new_user_skeleton_directory: "resources/chaosknoten/cloud/nextcloud/new_user_skeleton_directory/"
-nextcloud__proxy_protocol_reverse_proxy_ip: 172.31.17.140
+nextcloud__proxy_protocol_reverse_proxy_ip: "2a00:14b0:4200:3000:125::1"
 nextcloud__certbot_acme_account_email_address: le-admin@hamburg.ccc.de
diff --git a/inventories/chaosknoten/host_vars/grafana.yaml b/inventories/chaosknoten/host_vars/grafana.yaml
index 2e3672e..ecc942c 100644
--- a/inventories/chaosknoten/host_vars/grafana.yaml
+++ b/inventories/chaosknoten/host_vars/grafana.yaml
@@ -53,7 +53,6 @@ nginx__configurations:
   - name: metrics.hamburg.ccc.de
     content: "{{ lookup('ansible.builtin.file', 'resources/chaosknoten/grafana/nginx/metrics.hamburg.ccc.de.conf') }}"
 
-
 alloy_config: |
   prometheus.remote_write "default" {
     endpoint {
diff --git a/inventories/chaosknoten/host_vars/netbox.yaml b/inventories/chaosknoten/host_vars/netbox.yaml
index 60dd94a..3be8bdd 100644
--- a/inventories/chaosknoten/host_vars/netbox.yaml
+++ b/inventories/chaosknoten/host_vars/netbox.yaml
@@ -1,5 +1,5 @@
 # renovate: datasource=github-releases depName=netbox packageName=netbox-community/netbox
-netbox__version: "v4.4.5"
+netbox__version: "v4.4.6"
 netbox__config: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/netbox/netbox/configuration.py.j2') }}"
 netbox__custom_pipeline_oidc_group_and_role_mapping: true
 
diff --git a/inventories/chaosknoten/host_vars/router.yaml b/inventories/chaosknoten/host_vars/router.yaml
new file mode 100644
index 0000000..134d29f
--- /dev/null
+++ b/inventories/chaosknoten/host_vars/router.yaml
@@ -0,0 +1,2 @@
+systemd_networkd__config_dir: 'resources/chaosknoten/router/systemd_networkd/'
+nftables__config: "{{ lookup('ansible.builtin.file', 'resources/chaosknoten/router/nftables/nftables.conf') }}"
diff --git a/inventories/chaosknoten/hosts.yaml b/inventories/chaosknoten/hosts.yaml
index b9e6358..1028deb 100644
--- a/inventories/chaosknoten/hosts.yaml
+++ b/inventories/chaosknoten/hosts.yaml
@@ -7,13 +7,13 @@ all:
     chaosknoten:
       ansible_host: chaosknoten.hamburg.ccc.de
     cloud:
-      ansible_host: cloud-intern.hamburg.ccc.de
+      ansible_host: cloud.hosts.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     eh22-wiki:
-      ansible_host: eh22-wiki-intern.hamburg.ccc.de
+      ansible_host: eh22-wiki.hosts.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     grafana:
       ansible_host: grafana-intern.hamburg.ccc.de
       ansible_user: chaos
@@ -23,9 +23,9 @@ all:
       ansible_user: chaos
       ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
     keycloak:
-      ansible_host: keycloak-intern.hamburg.ccc.de
+      ansible_host: keycloak.hosts.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     lists:
       ansible_host: lists.hamburg.ccc.de
       ansible_user: chaos
@@ -37,13 +37,13 @@ all:
       ansible_user: chaos
       ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
     onlyoffice:
-      ansible_host: onlyoffice-intern.hamburg.ccc.de
+      ansible_host: onlyoffice.hosts.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     pad:
-      ansible_host: pad-intern.hamburg.ccc.de
+      ansible_host: pad.hosts.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     pretalx:
       ansible_host: pretalx-intern.hamburg.ccc.de
       ansible_user: chaos
@@ -51,10 +51,13 @@ all:
     public-reverse-proxy:
       ansible_host: public-reverse-proxy.hamburg.ccc.de
       ansible_user: chaos
-    wiki:
-      ansible_host: wiki-intern.hamburg.ccc.de
+    router:
+      ansible_host: router.hamburg.ccc.de
       ansible_user: chaos
-      ansible_ssh_common_args: -J ssh://chaos@public-reverse-proxy.hamburg.ccc.de
+    wiki:
+      ansible_host: wiki.hosts.hamburg.ccc.de
+      ansible_user: chaos
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
     zammad:
       ansible_host: zammad-intern.hamburg.ccc.de
       ansible_user: chaos
@@ -88,12 +91,19 @@ base_config_hosts:
     pad:
     pretalx:
     public-reverse-proxy:
+    router:
     tickets:
     wiki:
     zammad:
     ntfy:
     sunders:
     renovate:
+systemd_networkd_hosts:
+  hosts:
+    router:
+nftables_hosts:
+  hosts:
+    router:
 docker_compose_hosts:
   hosts:
     ccchoir:
@@ -173,6 +183,7 @@ infrastructure_authorized_keys_hosts:
     pad:
     pretalx:
     public-reverse-proxy:
+    router:
     wiki:
     zammad:
     ntfy:
diff --git a/playbooks/deploy.yaml b/playbooks/deploy.yaml
index d7bacac..f416b91 100644
--- a/playbooks/deploy.yaml
+++ b/playbooks/deploy.yaml
@@ -4,6 +4,16 @@
   roles:
     - base_config
 
+- name: Ensure systemd-networkd config deployment on systemd_networkd_hosts
+  hosts: systemd_networkd_hosts
+  roles:
+    - systemd_networkd
+
+- name: Ensure nftables deployment on nftables_hosts
+  hosts: nftables_hosts
+  roles:
+    - nftables
+
 - name: Ensure deployment of infrastructure authorized keys
   hosts: infrastructure_authorized_keys_hosts
   roles:
diff --git a/resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf b/resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf
index d3ed959..8c801fe 100644
--- a/resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf
+++ b/resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf
@@ -3,11 +3,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/grafana/docker_compose/compose.yaml.j2 b/resources/chaosknoten/grafana/docker_compose/compose.yaml.j2
index 74d7916..2d598f9 100644
--- a/resources/chaosknoten/grafana/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/grafana/docker_compose/compose.yaml.j2
@@ -2,7 +2,7 @@
 services:
 
   prometheus:
-    image: docker.io/prom/prometheus:v3.7.2
+    image: docker.io/prom/prometheus:v3.7.3
     container_name: prometheus
     command:
       - '--config.file=/etc/prometheus/prometheus.yml'
@@ -19,7 +19,7 @@ services:
       - prom_data:/prometheus
 
   alertmanager:
-    image: docker.io/prom/alertmanager:v0.28.1
+    image: docker.io/prom/alertmanager:v0.29.0
     container_name: alertmanager
     command:
       - '--config.file=/etc/alertmanager/alertmanager.yaml'
@@ -32,7 +32,7 @@ services:
       - alertmanager_data:/alertmanager
 
   grafana:
-    image: docker.io/grafana/grafana:12.2.1
+    image: docker.io/grafana/grafana:12.3.0
     container_name: grafana
     ports:
       - 3000:3000
@@ -59,7 +59,7 @@ services:
       - /dev/null:/etc/prometheus/pve.yml
 
   loki:
-    image: docker.io/grafana/loki:3.5.7
+    image: docker.io/grafana/loki:3.6.0
     container_name: loki
     ports:
       - 13100:3100
diff --git a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2 b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
index 9fde708..a260ab1 100644
--- a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
@@ -46,7 +46,7 @@ services:
       - "8080:8080"
 
   db:
-    image: docker.io/library/postgres:15.14
+    image: docker.io/library/postgres:15.15
     restart: unless-stopped
     networks:
       - keycloak
diff --git a/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf b/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
index 303b052..939e1da 100644
--- a/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
@@ -4,11 +4,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/keycloak/nginx/invite.hamburg.ccc.de.conf b/resources/chaosknoten/keycloak/nginx/invite.hamburg.ccc.de.conf
index 4a9cfe6..de1e9d6 100644
--- a/resources/chaosknoten/keycloak/nginx/invite.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/keycloak/nginx/invite.hamburg.ccc.de.conf
@@ -4,11 +4,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/keycloak/nginx/keycloak-admin.hamburg.ccc.de.conf b/resources/chaosknoten/keycloak/nginx/keycloak-admin.hamburg.ccc.de.conf
index 2b0d919..cd56b98 100644
--- a/resources/chaosknoten/keycloak/nginx/keycloak-admin.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/keycloak/nginx/keycloak-admin.hamburg.ccc.de.conf
@@ -7,12 +7,13 @@ server {
     ##listen [::]:443 ssl http2;
 
     # Listen on a custom port for the proxy protocol.
-    listen 8444 ssl http2 proxy_protocol;
+    listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/ntfy/docker_compose/compose.yaml.j2 b/resources/chaosknoten/ntfy/docker_compose/compose.yaml.j2
index 9fe2a7a..50df05d 100644
--- a/resources/chaosknoten/ntfy/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/ntfy/docker_compose/compose.yaml.j2
@@ -1,7 +1,7 @@
 ---
 services:
   ntfy:
-    image: docker.io/binwiederhier/ntfy:v2.14.0
+    image: docker.io/binwiederhier/ntfy:v2.15.0
     container_name: ntfy
     command:
       - serve
diff --git a/resources/chaosknoten/onlyoffice/nginx/onlyoffice.hamburg.ccc.de.conf b/resources/chaosknoten/onlyoffice/nginx/onlyoffice.hamburg.ccc.de.conf
index 2471525..8a9a486 100644
--- a/resources/chaosknoten/onlyoffice/nginx/onlyoffice.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/onlyoffice/nginx/onlyoffice.hamburg.ccc.de.conf
@@ -3,11 +3,13 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
+
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/pad/nginx/pad.hamburg.ccc.de.conf b/resources/chaosknoten/pad/nginx/pad.hamburg.ccc.de.conf
index 53d0a0d..6c453d1 100644
--- a/resources/chaosknoten/pad/nginx/pad.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/pad/nginx/pad.hamburg.ccc.de.conf
@@ -3,11 +3,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index 3de7eac..dda67bb 100644
--- a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
@@ -15,7 +15,7 @@ services:
       - pretalx_net
 
   redis:
-    image: docker.io/library/redis:8.2.2
+    image: docker.io/library/redis:8.4.0
     restart: unless-stopped
     volumes:
       - redis:/data
diff --git a/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf b/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
index 165e166..409b5c6 100644
--- a/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
@@ -6,27 +6,27 @@ map $host $upstream_acme_challenge_host {
     staging.c3cat.de 172.31.17.151:31820;
     ccchoir.de ccchoir-intern.hamburg.ccc.de:31820;
     www.ccchoir.de ccchoir-intern.hamburg.ccc.de:31820;
-    cloud.hamburg.ccc.de 172.31.17.143:31820;
+    cloud.hamburg.ccc.de cloud.hosts.hamburg.ccc.de:31820;
     element.hamburg.ccc.de 172.31.17.151:31820;
     git.hamburg.ccc.de 172.31.17.154:31820;
     grafana.hamburg.ccc.de 172.31.17.145:31820;
     hackertours.hamburg.ccc.de 172.31.17.151:31820;
     staging.hackertours.hamburg.ccc.de 172.31.17.151:31820;
     hamburg.ccc.de 172.31.17.151:31820;
-    id.hamburg.ccc.de 172.31.17.144:31820;
-    invite.hamburg.ccc.de 172.31.17.144:31820;
-    keycloak-admin.hamburg.ccc.de 172.31.17.144:31820;
+    id.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:31820;
+    invite.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:31820;
+    keycloak-admin.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:31820;
     matrix.hamburg.ccc.de 172.31.17.150:31820;
     mas.hamburg.ccc.de 172.31.17.150:31820;
     element-admin.hamburg.ccc.de 172.31.17.151:31820;
     netbox.hamburg.ccc.de 172.31.17.167:31820;
-    onlyoffice.hamburg.ccc.de 172.31.17.147:31820;
-    pad.hamburg.ccc.de 172.31.17.141:31820;
+    onlyoffice.hamburg.ccc.de onlyoffice.hosts.hamburg.ccc.de:31820;
+    pad.hamburg.ccc.de pad.hosts.hamburg.ccc.de:31820;
     pretalx.hamburg.ccc.de 172.31.17.157:31820;
     spaceapi.hamburg.ccc.de 172.31.17.151:31820;
     staging.hamburg.ccc.de 172.31.17.151:31820;
-    wiki.ccchh.net 172.31.17.146:31820;
-    wiki.hamburg.ccc.de 172.31.17.146:31820;
+    wiki.ccchh.net wiki.hosts.hamburg.ccc.de:31820;
+    wiki.hamburg.ccc.de wiki.hosts.hamburg.ccc.de:31820;
     www.hamburg.ccc.de 172.31.17.151:31820;
     tickets.hamburg.ccc.de 172.31.17.148:31820;
     sunders.hamburg.ccc.de 172.31.17.170:31820;
@@ -38,7 +38,7 @@ map $host $upstream_acme_challenge_host {
     eh11.easterhegg.eu 172.31.17.151:31820;
     eh20.easterhegg.eu 172.31.17.151:31820;
     www.eh20.easterhegg.eu 172.31.17.151:31820;
-    eh22.easterhegg.eu 172.31.17.165:31820;
+    eh22.easterhegg.eu eh22-wiki.hosts.hamburg.ccc.de:31820;
     easterheggxxxx.hamburg.ccc.de 172.31.17.151:31820;
     eh2003.hamburg.ccc.de 172.31.17.151:31820;
     www.eh2003.hamburg.ccc.de 172.31.17.151:31820;
diff --git a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
index 4a449f5..97e0e3c 100644
--- a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
@@ -20,16 +20,16 @@ stream {
     map $ssl_preread_server_name $address {
         ccchoir.de ccchoir-intern.hamburg.ccc.de:8443;
         www.ccchoir.de ccchoir-intern.hamburg.ccc.de:8443;
-        cloud.hamburg.ccc.de cloud-intern.hamburg.ccc.de:8443;
-        pad.hamburg.ccc.de pad-intern.hamburg.ccc.de:8443;
+        cloud.hamburg.ccc.de cloud.hosts.hamburg.ccc.de:8443;
+        pad.hamburg.ccc.de pad.hosts.hamburg.ccc.de:8443;
         pretalx.hamburg.ccc.de pretalx-intern.hamburg.ccc.de:8443;
-        id.hamburg.ccc.de 172.31.17.144:8443;
-        invite.hamburg.ccc.de 172.31.17.144:8443;
-        keycloak-admin.hamburg.ccc.de 172.31.17.144:8444;
+        id.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:8443;
+        invite.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:8443;
+        keycloak-admin.hamburg.ccc.de keycloak.hosts.hamburg.ccc.de:8443;
         grafana.hamburg.ccc.de 172.31.17.145:8443;
-        wiki.ccchh.net 172.31.17.146:8443;
-        wiki.hamburg.ccc.de 172.31.17.146:8443;
-        onlyoffice.hamburg.ccc.de 172.31.17.147:8443;
+        wiki.ccchh.net wiki.hosts.hamburg.ccc.de:8443;
+        wiki.hamburg.ccc.de wiki.hosts.hamburg.ccc.de:8443;
+        onlyoffice.hamburg.ccc.de onlyoffice.hosts.hamburg.ccc.de:8443;
         hackertours.hamburg.ccc.de 172.31.17.151:8443;
         staging.hackertours.hamburg.ccc.de 172.31.17.151:8443;
         netbox.hamburg.ccc.de 172.31.17.167:8443;
@@ -56,7 +56,7 @@ stream {
         eh11.easterhegg.eu 172.31.17.151:8443;
         eh20.easterhegg.eu 172.31.17.151:8443;
         www.eh20.easterhegg.eu 172.31.17.151:8443;
-        eh22.easterhegg.eu 172.31.17.165:8443;
+        eh22.easterhegg.eu eh22-wiki.hosts.hamburg.ccc.de:8443;
         easterheggxxxx.hamburg.ccc.de 172.31.17.151:8443;
         eh2003.hamburg.ccc.de 172.31.17.151:8443;
         www.eh2003.hamburg.ccc.de 172.31.17.151:8443;
diff --git a/resources/chaosknoten/router/nftables/nftables.conf b/resources/chaosknoten/router/nftables/nftables.conf
new file mode 100644
index 0000000..3375bfb
--- /dev/null
+++ b/resources/chaosknoten/router/nftables/nftables.conf
@@ -0,0 +1,79 @@
+#!/usr/sbin/nft -f
+
+## Variables
+
+# Interfaces
+define if_net1_v4_wan = "net1"
+define if_net2_v6_wan = "net2"
+define if_net0_2_v4_nat = "net0.2"
+define if_net0_3_ci_runner = "net0.3"
+
+# Interface Groups
+define wan_ifs = { $if_net1_v4_wan,
+                   $if_net2_v6_wan }
+define lan_ifs = { $if_net0_2_v4_nat,
+                   $if_net0_3_ci_runner }
+# define v4_exposed_ifs = { }
+define v6_exposed_ifs = { $if_net0_2_v4_nat }
+
+
+## Rules
+
+table inet reverse-path-forwarding {
+    chain rpf-filter {
+        type filter hook prerouting priority mangle + 10; policy drop;
+
+        # Only allow packets if their source address is routed via their incoming interface.
+        # https://github.com/NixOS/nixpkgs/blob/d9d87c51960050e89c79e4025082ed965e770d68/nixos/modules/services/networking/firewall-nftables.nix#L100
+        fib saddr . mark . iif oif exists accept
+    }
+}
+
+table inet host {
+    chain input {
+        type filter hook input priority filter; policy drop;
+
+        iifname "lo" accept comment "allow loopback"
+
+        ct state invalid drop
+        ct state established,related accept
+
+		ip protocol icmp accept
+		ip6 nexthdr icmpv6 accept
+
+        # Allow SSH access.
+        tcp dport 22 accept comment "allow ssh access"
+
+        # Allow DHCP server access.
+		iifname { $if_net0_2_v4_nat, $if_net0_3_ci_runner } udp dport 67 accept comment "allow dhcp server access"
+    }
+}
+
+table ip v4nat {
+    chain prerouting {
+        type nat hook prerouting priority dstnat; policy accept;
+    }
+
+    chain postrouting {
+        type nat hook postrouting priority srcnat; policy accept;
+
+        oifname $if_net1_v4_wan masquerade
+    }
+}
+
+table inet forward {
+    chain forward {
+        type filter hook forward priority filter; policy drop;
+
+        ct state invalid drop
+        ct state established,related accept
+
+        # Allow internet access.
+		meta nfproto ipv6 iifname $lan_ifs oifname $if_net2_v6_wan accept comment "allow v6 internet access"
+		meta nfproto ipv4 iifname $lan_ifs oifname $if_net1_v4_wan accept comment "allow v4 internet access"
+
+        # Allow access to exposed networks from internet.
+        # meta nfproto ipv4 oifname $v4_exposed_ifs accept comment "allow v4 exposed network access"
+        meta nfproto ipv6 oifname $v6_exposed_ifs accept comment "allow v6 exposed network access"
+    }
+}
diff --git a/resources/chaosknoten/router/systemd_networkd/00-net0.link b/resources/chaosknoten/router/systemd_networkd/00-net0.link
new file mode 100644
index 0000000..0c55d13
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/00-net0.link
@@ -0,0 +1,6 @@
+[Match]
+MACAddress=BC:24:11:54:11:15
+Type=ether
+
+[Link]
+Name=net0
diff --git a/resources/chaosknoten/router/systemd_networkd/00-net1.link b/resources/chaosknoten/router/systemd_networkd/00-net1.link
new file mode 100644
index 0000000..ef04d04
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/00-net1.link
@@ -0,0 +1,6 @@
+[Match]
+MACAddress=BC:24:11:9A:FB:34
+Type=ether
+
+[Link]
+Name=net1
diff --git a/resources/chaosknoten/router/systemd_networkd/00-net2.link b/resources/chaosknoten/router/systemd_networkd/00-net2.link
new file mode 100644
index 0000000..2a56f72
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/00-net2.link
@@ -0,0 +1,6 @@
+[Match]
+MACAddress=BC:24:11:AE:C7:04
+Type=ether
+
+[Link]
+Name=net2
diff --git a/resources/chaosknoten/router/systemd_networkd/10-net0.2-v4_nat.netdev b/resources/chaosknoten/router/systemd_networkd/10-net0.2-v4_nat.netdev
new file mode 100644
index 0000000..a46afb4
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/10-net0.2-v4_nat.netdev
@@ -0,0 +1,7 @@
+[NetDev]
+Name=net0.2
+Kind=vlan
+
+[VLAN]
+Id=2
+
diff --git a/resources/chaosknoten/router/systemd_networkd/10-net0.3-ci_runner.netdev b/resources/chaosknoten/router/systemd_networkd/10-net0.3-ci_runner.netdev
new file mode 100644
index 0000000..0cd60db
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/10-net0.3-ci_runner.netdev
@@ -0,0 +1,7 @@
+[NetDev]
+Name=net0.3
+Kind=vlan
+
+[VLAN]
+Id=3
+
diff --git a/resources/chaosknoten/router/systemd_networkd/20-net0.network b/resources/chaosknoten/router/systemd_networkd/20-net0.network
new file mode 100644
index 0000000..a32d75e
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/20-net0.network
@@ -0,0 +1,12 @@
+[Match]
+Name=net0
+
+[Link]
+RequiredForOnline=no
+
+[Network]
+VLAN=net0.2
+VLAN=net0.3
+
+LinkLocalAddressing=no
+
diff --git a/resources/chaosknoten/router/systemd_networkd/20-net1.network b/resources/chaosknoten/router/systemd_networkd/20-net1.network
new file mode 100644
index 0000000..c8bffc1
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/20-net1.network
@@ -0,0 +1,14 @@
+[Match]
+Name=net1
+
+[Network]
+DNS=212.12.50.158
+IPForward=ipv4
+IPv6AcceptRA=no
+
+[Address]
+Address=212.12.48.123/24
+
+[Route]
+Gateway=212.12.48.55
+
diff --git a/resources/chaosknoten/router/systemd_networkd/20-net2.network b/resources/chaosknoten/router/systemd_networkd/20-net2.network
new file mode 100644
index 0000000..b3f497d
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/20-net2.network
@@ -0,0 +1,14 @@
+[Match]
+Name=net2
+
+[Network]
+#DNS=212.12.50.158
+IPForward=ipv6
+IPv6AcceptRA=no
+
+[Address]
+Address=2a00:14b0:4200:3500::130:2/112
+
+[Route]
+Gateway=2a00:14b0:4200:3500::130:1
+
diff --git a/resources/chaosknoten/router/systemd_networkd/21-net0.2-v4_nat.network b/resources/chaosknoten/router/systemd_networkd/21-net0.2-v4_nat.network
new file mode 100644
index 0000000..b15259d
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/21-net0.2-v4_nat.network
@@ -0,0 +1,29 @@
+[Match]
+Name=net0.2
+Type=vlan
+
+[Link]
+RequiredForOnline=no
+
+[Network]
+Description=v4-NAT
+
+# Masquerading done in nftables (nftables.conf).
+IPv6SendRA=yes
+
+DHCPServer=true
+
+[DHCPServer]
+PoolOffset=100
+PoolSize=150
+
+[Address]
+Address=10.32.2.1/24
+
+[IPv6SendRA]
+UplinkInterface=net2
+
+[IPv6Prefix]
+Prefix=2a00:14b0:42:102::/64
+Assign=true
+Token=static:::1
diff --git a/resources/chaosknoten/router/systemd_networkd/21-net0.3-ci_runners.network b/resources/chaosknoten/router/systemd_networkd/21-net0.3-ci_runners.network
new file mode 100644
index 0000000..9caca86
--- /dev/null
+++ b/resources/chaosknoten/router/systemd_networkd/21-net0.3-ci_runners.network
@@ -0,0 +1,29 @@
+[Match]
+Name=net0.3
+Type=vlan
+
+[Link]
+RequiredForOnline=no
+
+[Network]
+Description=ci-runners
+
+# Masquerading done in nftables (nftables.conf).
+IPv6SendRA=yes
+
+DHCPServer=true
+
+[DHCPServer]
+PoolOffset=100
+PoolSize=150
+
+[Address]
+Address=10.32.3.1/24
+
+[IPv6SendRA]
+UplinkInterface=net2
+
+[IPv6Prefix]
+Prefix=2a00:14b0:42:103::/64
+Assign=true
+Token=static:::1
diff --git a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2 b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
index 6509a99..6acbd2b 100644
--- a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
@@ -13,7 +13,7 @@ services:
     restart: unless-stopped
 
   redis:
-    image: docker.io/library/redis:7.4.6
+    image: docker.io/library/redis:8.4.0
     ports:
       - "6379:6379"
     volumes:
diff --git a/resources/chaosknoten/wiki/nginx/wiki.ccchh.net.conf b/resources/chaosknoten/wiki/nginx/wiki.ccchh.net.conf
index a564fc2..472236a 100644
--- a/resources/chaosknoten/wiki/nginx/wiki.ccchh.net.conf
+++ b/resources/chaosknoten/wiki/nginx/wiki.ccchh.net.conf
@@ -3,11 +3,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
@@ -21,6 +22,6 @@ server {
 
     # HSTS (ngx_http_headers_module is required) (63072000 seconds)
     add_header Strict-Transport-Security "max-age=63072000" always;
-    
+
     return 302 https://wiki.hamburg.ccc.de$request_uri;
 }
diff --git a/resources/chaosknoten/wiki/nginx/wiki.hamburg.ccc.de.conf b/resources/chaosknoten/wiki/nginx/wiki.hamburg.ccc.de.conf
index ccdd224..b4eab7f 100644
--- a/resources/chaosknoten/wiki/nginx/wiki.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/wiki/nginx/wiki.hamburg.ccc.de.conf
@@ -3,11 +3,12 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
     # First set our proxy protocol proxy as trusted.
-    set_real_ip_from 172.31.17.140;
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
     # Then tell the realip_module to get the addreses from the proxy protocol
     # header.
     real_ip_header proxy_protocol;
diff --git a/roles/ansible_pull/tasks/main.yaml b/roles/ansible_pull/tasks/main.yaml
index 5abcd10..61a2635 100644
--- a/roles/ansible_pull/tasks/main.yaml
+++ b/roles/ansible_pull/tasks/main.yaml
@@ -3,6 +3,7 @@
     - name: ensure apt dependencies are installed
       ansible.builtin.apt:
         name:
+          - python3-pip
           - virtualenv
           - git
         state: present
diff --git a/roles/base_config/tasks/main.yaml b/roles/base_config/tasks/main.yaml
new file mode 100644
index 0000000..cd8affd
--- /dev/null
+++ b/roles/base_config/tasks/main.yaml
@@ -0,0 +1,13 @@
+# Ensure the ssh module is disabled, so a cloud-init config change doesn't regenerate the host keys for no reason.
+- name: check if cloud-init config file exists
+  ansible.builtin.stat:
+    path: /etc/cloud/cloud.cfg
+  register: base_config__stat_cloud_cfg
+
+- name: ensure the cloud-init ssh module is disabled
+  ansible.builtin.replace:
+    path: /etc/cloud/cloud.cfg
+    regexp: " - ssh$"
+    replace: " #- ssh"
+  become: true
+  when: base_config__stat_cloud_cfg.stat.exists
diff --git a/roles/certbot/meta/main.yaml b/roles/certbot/meta/main.yaml
index b4a1c6f..9b678e9 100644
--- a/roles/certbot/meta/main.yaml
+++ b/roles/certbot/meta/main.yaml
@@ -7,3 +7,4 @@ dependencies:
           major_versions:
             - 11
             - 12
+            - 13
diff --git a/roles/docker/meta/main.yaml b/roles/docker/meta/main.yaml
index b4a1c6f..9b678e9 100644
--- a/roles/docker/meta/main.yaml
+++ b/roles/docker/meta/main.yaml
@@ -7,3 +7,4 @@ dependencies:
           major_versions:
             - 11
             - 12
+            - 13
diff --git a/roles/dokuwiki/meta/main.yml b/roles/dokuwiki/meta/main.yml
index b4a1c6f..9b678e9 100644
--- a/roles/dokuwiki/meta/main.yml
+++ b/roles/dokuwiki/meta/main.yml
@@ -7,3 +7,4 @@ dependencies:
           major_versions:
             - 11
             - 12
+            - 13
diff --git a/roles/nextcloud/templates/nginx_nextcloud.conf.j2 b/roles/nextcloud/templates/nginx_nextcloud.conf.j2
index c15a653..1beeaf3 100644
--- a/roles/nextcloud/templates/nginx_nextcloud.conf.j2
+++ b/roles/nextcloud/templates/nginx_nextcloud.conf.j2
@@ -4,6 +4,7 @@
 server {
     # Listen on a custom port for the proxy protocol.
     listen 8443 ssl http2 proxy_protocol;
+    listen [::]:8443 ssl http2 proxy_protocol;
     # Make use of the ngx_http_realip_module to set the $remote_addr and
     # $remote_port to the client address and client port, when using proxy
     # protocol.
diff --git a/roles/nftables/README.md b/roles/nftables/README.md
new file mode 100644
index 0000000..81d8871
--- /dev/null
+++ b/roles/nftables/README.md
@@ -0,0 +1,11 @@
+# Role `nftables`
+
+Deploys nftables.
+
+## Support Distributions
+
+Should work on Debian-based distributions.
+
+## Required Arguments
+
+- `nftables__config`: nftables configuration to deploy.
diff --git a/roles/nftables/handlers/main.yaml b/roles/nftables/handlers/main.yaml
new file mode 100644
index 0000000..3b72c54
--- /dev/null
+++ b/roles/nftables/handlers/main.yaml
@@ -0,0 +1,5 @@
+- name: Restart nftables service
+  ansible.builtin.systemd_service:
+    name: nftables
+    state: restarted
+  become: true
diff --git a/roles/nftables/meta/argument_specs.yaml b/roles/nftables/meta/argument_specs.yaml
new file mode 100644
index 0000000..aa56223
--- /dev/null
+++ b/roles/nftables/meta/argument_specs.yaml
@@ -0,0 +1,6 @@
+argument_specs:
+  main:
+    options:
+      nftables__config:
+        type: str
+        required: true
diff --git a/roles/nftables/tasks/main.yaml b/roles/nftables/tasks/main.yaml
new file mode 100644
index 0000000..46ea18d
--- /dev/null
+++ b/roles/nftables/tasks/main.yaml
@@ -0,0 +1,15 @@
+- name: ensure nftables is installed
+  ansible.builtin.apt:
+    name: nftables
+    state: present
+  become: true
+
+- name: deploy nftables configuration
+  ansible.builtin.copy:
+    content: "{{ nftables__config }}"
+    dest: "/etc/nftables.conf"
+    mode: "0644"
+    owner: root
+    group: root
+  become: true
+  notify: Restart nftables service
diff --git a/roles/nginx/meta/main.yaml b/roles/nginx/meta/main.yaml
index 02b00ac..78bb770 100644
--- a/roles/nginx/meta/main.yaml
+++ b/roles/nginx/meta/main.yaml
@@ -7,3 +7,4 @@ dependencies:
           major_versions:
             - "11"
             - "12"
+            - "13"
diff --git a/roles/prometheus_node_exporter/meta/main.yaml b/roles/prometheus_node_exporter/meta/main.yaml
index 02b00ac..78bb770 100644
--- a/roles/prometheus_node_exporter/meta/main.yaml
+++ b/roles/prometheus_node_exporter/meta/main.yaml
@@ -7,3 +7,4 @@ dependencies:
           major_versions:
             - "11"
             - "12"
+            - "13"
diff --git a/roles/systemd_networkd/README.md b/roles/systemd_networkd/README.md
new file mode 100644
index 0000000..3297c47
--- /dev/null
+++ b/roles/systemd_networkd/README.md
@@ -0,0 +1,11 @@
+# Role `systemd_networkd`
+
+Deploys the given systemd-networkd configuration files.
+
+## Support Distributions
+
+Should work on Debian-based distributions.
+
+## Required Arguments
+
+- `systemd_networkd__config_dir`: Directory with systemd-networkd configs to deploy.
diff --git a/roles/systemd_networkd/meta/argument_specs.yaml b/roles/systemd_networkd/meta/argument_specs.yaml
new file mode 100644
index 0000000..81b046a
--- /dev/null
+++ b/roles/systemd_networkd/meta/argument_specs.yaml
@@ -0,0 +1,6 @@
+argument_specs:
+  main:
+    options:
+      systemd_networkd__config_dir:
+        type: path
+        required: true
diff --git a/roles/systemd_networkd/tasks/main.yaml b/roles/systemd_networkd/tasks/main.yaml
new file mode 100644
index 0000000..f88ed14
--- /dev/null
+++ b/roles/systemd_networkd/tasks/main.yaml
@@ -0,0 +1,14 @@
+- name: ensure rsync is installed
+  ansible.builtin.apt:
+    name: rsync
+    state: present
+  become: true
+
+- name: synchronize systemd-networkd configs
+  ansible.posix.synchronize:
+    src: "{{ systemd_networkd__config_dir }}"
+    dest: "/etc/systemd/network"
+    archive: false
+    recursive: true
+    delete: true
+  become: true