Merge branch 'role_nftables'

kubernetes/defaults/main.yml

@@ -2,16 +2,40 @@
 kubernetes:
   ipPool:
     ipv4:
+      # Minimum: /24
       cluster_cidr: 10.42.0.0/16
       service_cidr: 10.43.0.0/16
     ipv6:
+      # Minimum: /120
       cluster_cidr: fd42::/56
       service_cidr: fd43::/112
 
-    # Replace - with _
+    # Interface to grab node-IPv4/v6 from
     nodeIp_interface: <interface to grab nodeIp from>
 
   control_plane:
     dns_name: <control-plane dns-reachable-name>
 
   token: <shared token for nodes to join>
+
+  network:
+    # One of [flannel, calico]
+    plugin: calico
+
+    # Helper for networking
+    helper:
+      # https://github.com/Ruakij/RoutingTableToWg
+      #  Translates received-routes from e.g. BGP to wireguard-allowedips
+      #  Helpful, when nodeIp_interface is a wireguard-interface
+      routingtabletowg: false
+
+  # One of [traefik-ingress]
+  ingress_controller: traefik-ingress
+
+  config_extra:
+    # etcd-tuning
+    #  heartbeat: 0.5-1.5x of rtt
+    #  election:  10x- of heartbeat
+    etcd-arg:
+      heartbeat-interval: 500
+      election-timeout: 5000

kubernetes/meta/main.yml

@@ -1,4 +1,3 @@
 ---
   dependencies:
     - role: docker
-    - role: netmaker

kubernetes/tasks/install.yml

@@ -8,6 +8,7 @@
   ansible.builtin.template:
     src: k3s/{{ type }}/config.yaml.jinja2
     dest: /etc/rancher/k3s/config.yaml
+  register: config
 
 - name: Download install-script
   get_url:

kubernetes/tasks/install/agent/install_k3s.yml

@@ -1,7 +1,12 @@
 - name: Install K3s agent
   command: /root/k3s_install.sh {{ type }}
   register: command
-  changed_when: "'No change detected' in command.stdout"
+  changed_when: "'No change detected' not in command.stdout"
   until: "command is not failed"
   retries: 2
   delay: 10
+
+- name: Make sure service is started / restarted on config change
+  service:
+    name: k3s-agent
+    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"

kubernetes/tasks/install/server/install_k3s.yml

@@ -2,7 +2,13 @@
   command: /root/k3s_install.sh {{ type }}
   when: "inventory_hostname == groups['kubernetes'][0]"
   register: command
-  changed_when: "'No change detected' in command.stdout"
+  changed_when: "'No change detected' not in command.stdout"
+
+- name: Make sure service is started / restarted on config change
+  service:
+    name: k3s
+    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"
+  when: "inventory_hostname == groups['kubernetes'][0]"
 
 - name: Waiting for K3s-server to accept connections
   ansible.builtin.wait_for:
@@ -15,11 +21,17 @@
   command: /root/k3s_install.sh {{ type }}
   when: "inventory_hostname != groups['kubernetes'][0]"
   register: command
-  changed_when: "'No change detected' in command.stdout"
+  changed_when: "'No change detected' not in command.stdout"
   until: "command is not failed"
   retries: 2
   delay: 10
 
+- name: Make sure service is started / restarted on config change
+  service:
+    name: k3s
+    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"
+  when: "inventory_hostname != groups['kubernetes'][0]"
+
 - name: Waiting for K3s-server to accept connections on other nodes
   ansible.builtin.wait_for:
     host: "{{ inventory_hostname }}"
@@ -34,3 +46,10 @@
 #    block: |
 #      export KUBECONFIG="/etc/rancher/k3s/k3s.yaml"
 #    create: true
+
+- name: Deploy calico
+  import_tasks: ./roles/kubernetes/tasks/install/server/network-plugin/deploy_calico.yml
+  when: "kubernetes.network.plugin == 'calico'"
+
+- name: Deploy network-helpers
+  import_tasks: ./roles/kubernetes/tasks/install/server/network-plugin/deploy_network_helper.yml

kubernetes/tasks/install/server/network-plugin/deploy_calico.yml

@@ -0,0 +1,19 @@
+- name: Deploy calico operator
+  command: kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.25.0/manifests/tigera-operator.yaml
+  register: command
+  changed_when: "'created' in command.stdout"
+  run_once: true
+  failed_when:
+  - "command.rc == 1 and 'AlreadyExists' not in command.stderr"
+
+- name: Deploy calico ressource template
+  ansible.builtin.template:
+    src: ./k3s/server/network-plugin/calico/custom-ressource.yml.jinja2
+    dest: /root/calico-ressource.yml
+  run_once: true
+
+- name: Deploy calico ressource
+  command: kubectl apply -f /root/calico-ressource.yml
+  register: command
+  changed_when: "'created' in command.stdout"
+  run_once: true

kubernetes/tasks/install/server/network-plugin/deploy_network_helper.yml

@@ -0,0 +1,7 @@
+- name: Deploy service-file for routing-table to wireguard-translation
+  ansible.builtin.template:
+    src: ./k3s/server/network-plugin/calico/routingtabletowg.yml.jinja2
+    dest: /var/lib/rancher/k3s/server/manifests/routingtabletowg.yml
+    mode: u=rw,g=r,o=r
+  run_once: true
+  when: "kubernetes.network.helper.routingtabletowg"

kubernetes/tasks/prerequisites.yml

@@ -17,19 +17,26 @@
 #- name: Disable swap
 #  command: swapoff -a
 
-#- name: Install iptables
+- name: Install required packages
-#  package:
+  package:
-#      name:
+      name:
-#          #- containerd
+          #- containerd
-#          - iptables
+          #- iptables
-#      state: latest
+          # For Longhorn:
+          - nfs-common
+          - open-iscsi
+      state: latest
 
 -  import_tasks: ./prerequisites/containerd.yml
 
+- name: Gather interface-name
+  set_fact:
+    interface: "{{ kubernetes.ipPool.nodeIp_interface | replace('-', '_') }}"
+
 - name: Getting nodeIp-data from interface
   set_fact:
-    nodeip_ipv4: "{{ ansible_facts[ kubernetes.ipPool.nodeIp_interface ].ipv4.address }}"
+    nodeip_ipv4: "{{ ansible_facts[ interface ].ipv4.address }}"
-    nodeip_ipv6: "{{ ansible_facts[ kubernetes.ipPool.nodeIp_interface ].ipv6[0].address }}"
+    nodeip_ipv6: "{{ ansible_facts[ interface ].ipv6[0].address if ansible_facts[ interface ].ipv6 is defined }}"
 
 - name: Run handlers to reload configurations
   meta: flush_handlers

kubernetes/templates/k3s/agent/config.yaml.jinja2

@@ -1,7 +1,18 @@
-server: https://{{ kubernetes.control_plane.dns_name }}:6443
+server: https://{{ hostvars[groups['kubernetes'][0]]['nodeip_ipv4'] }}:6443
-token: {{ kubernetes.token }}
+token: '{{ kubernetes.token }}'
 
+{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
 node-ip: {{ nodeip_ipv4 }},{{ nodeip_ipv6 }} 
+{% else %}
+node-ip: {{ nodeip_ipv4 }}
+{% endif %}
 
-# FIXME: Workaround for bug in Kubernetes 1.24/1.25 ignoring node IPv6 addresses
+## Label
-kubelet-arg: "--node-ip=0.0.0.0"
+# Region & DC
+node-label:
+{% if region is defined %}
+  - topology.kubernetes.io/region={{ region }}
+{% endif %}
+{% if zone is defined %}
+  - topology.kubernetes.io/zone={{ zone }}
+{% endif %}

kubernetes/templates/k3s/server/config.yaml.jinja2

@@ -1,23 +1,49 @@
 ## Base ##
 {% if inventory_hostname == groups['kubernetes'][0] %}
+# Initialize with internal etcd
 cluster-init: true
 {% else %}
-server: https://{{ groups['kubernetes'][0] }}:6443
+server: https://{{ hostvars[groups['kubernetes'][0]]['nodeip_ipv4'] }}:6443
 {% endif %}
 
-token: {{ kubernetes.token }}
+token: '{{ kubernetes.token }}'
 tls-san:
   - {{ kubernetes.control_plane.dns_name }}
 
 # Networking
+{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
 node-ip: {{ nodeip_ipv4 }},{{ nodeip_ipv6 }}
 cluster-cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }},{{ kubernetes.ipPool.ipv6.cluster_cidr }}
 service-cidr: {{ kubernetes.ipPool.ipv4.service_cidr }},{{ kubernetes.ipPool.ipv6.service_cidr }}  
+{% else %}
+node-ip: {{ nodeip_ipv4 }}
+cluster-cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }}
+service-cidr: {{ kubernetes.ipPool.ipv4.service_cidr }}
+{% endif %}
 
 egress-selector-mode: disabled
 
 # Network-plugin
+{% if kubernetes.network.plugin == "flannel" %}
 flannel-backend: vxlan
+{% else %}
+disable-network-policy: true
+flannel-backend: none
+{% endif %}
+
+# Ingress-plugin
+{% if kubernetes.ingress_controller != "traefik-ingress" %}
+disable: traefik
+{% endif %}
+
+## Label
+# Region & DC
+node-label:
+{% if region is defined %}
+  - topology.kubernetes.io/region={{ region }}
+{% endif %}
+{% if zone is defined %}
+  - topology.kubernetes.io/zone={{ zone }}
+{% endif %}
 
-# FIXME: Workaround for bug in Kubernetes 1.24/1.25 ignoring node IPv6 addresses
+{{ kubernetes.config_extra | to_yaml }}
-kubelet-arg: "--node-ip=0.0.0.0"

kubernetes/templates/k3s/server/network-plugin/calico/custom-ressource.yml.jinja2

@@ -0,0 +1,34 @@
+# This section includes base Calico installation configuration.
+# For more information, see: https://projectcalico.docs.tigera.io/master/reference/installation/api#operator.tigera.io/v1.Installation
+apiVersion: operator.tigera.io/v1
+kind: Installation
+metadata:
+  name: default
+spec:
+  # Configures Calico networking.
+  calicoNetwork:
+    # Note: The ipPools section cannot be modified post-install.
+    ipPools:
+    - blockSize: 26
+      cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }}
+      encapsulation: None
+      natOutgoing: Enabled
+      nodeSelector: all()
+
+{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
+    - blockSize: 122
+      cidr: {{ kubernetes.ipPool.ipv6.cluster_cidr }}
+      encapsulation: None
+      natOutgoing: Enabled
+      nodeSelector: all()
+{% endif %}
+
+---
+
+# This section configures the Calico API server.
+# For more information, see: https://projectcalico.docs.tigera.io/master/reference/installation/api#operator.tigera.io/v1.APIServer
+apiVersion: operator.tigera.io/v1
+kind: APIServer 
+metadata: 
+  name: default 
+spec: {}

kubernetes/templates/k3s/server/network-plugin/calico/routingtabletowg.yml.jinja2

@@ -0,0 +1,45 @@
+# https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: routingtabletowg
+  namespace: calico-system
+  labels:
+    app: routingtabletowg
+spec:
+  selector:
+    matchLabels:
+      app: routingtabletowg
+  template:
+    metadata:
+      labels:
+        app: routingtabletowg
+    spec:
+      tolerations:
+      # this toleration is to have the daemonset runnable on master nodes
+      # remove it if your masters can't run pods
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      hostNetwork: true
+      containers:
+        - name: routingtabletowg
+          image: "ruakij/routingtabletowg:0.2.0"
+          env:
+            - name: INTERFACE
+              value: {{ kubernetes.ipPool.nodeIp_interface }}
+            - name: FILTER_PROTOCOL
+              value: bird
+            - name: PERIODIC_SYNC
+              value: '300'
+          securityContext:
+            capabilities:
+              add:
+                - NET_ADMIN
+          resources:
+            requests:
+              cpu: 10m
+              memory: 10Mi
+            limits:
+              cpu: 20m
+              memory: 20Mi
+---

nftables/defaults/nftables.yml

@@ -0,0 +1,29 @@
+nftables:
+  # Rules to add
+  #  Handled as templates
+  #  Creates separate files for each entry.
+  # The identifier is necessary for ansible to be able to merge the keys (when 'hash_behaviour = merge')
+  #  rule-ids have to be unique across files and raw
+  rules:
+    # Files with Rules to add
+    files:
+      #'<group_identifier>': '<relative-location>'
+      #'<group_identifier>':
+      #  main: <relative-location>
+      #  '<identifier>': '<relative-location>'
+
+    # Rules to add
+    raw:
+      #'<group_identifier>': '<content>'
+      #'<group_identifier>':
+      #  main: <content>
+      #  '<identifier>': '<content>'
+
+  # Decides if /etc/nftables.conf is applied or separate files which have changed
+  #  Separate changes require the files to be self-tyding to not end up with duplicate rules
+  #  e.g.
+  #   table ip mytable
+  #   flush table ip mytable
+  #   delete table ip mytable
+  #   table ip mytable {} ...
+  apply_global: false

nftables/tasks/apply-files.yml

@@ -0,0 +1,8 @@
+- name: Load group rules
+  command: "nft -f /etc/nftables/ansible-managed/{{ item }}.nft"
+  loop: "{{ combined_rules | list }}"
+  when: not nftables.apply_global
+
+- name: Load global rule file
+  command: "nft -f /etc/nftables.nft"
+  when: nftables.apply_global

nftables/tasks/deploy-rules/main.yml

@@ -0,0 +1,11 @@
+- name: Deploying group files
+  include_tasks: ./per-group-template-file.yml
+  with_items:
+    - "{{ nftables.rules.files | list }}"
+
+- name: Deploying group raw-files
+  include_tasks: ./per-group-template.yml
+  with_items:
+    - "{{ nftables.rules.raw | list }}"
+
+- include_tasks: ./remove-files.yml

nftables/tasks/deploy-rules/per-group-template-file.yml

@@ -0,0 +1,51 @@
+- set_fact:
+    group_identifier: "{{ item }}"
+    value: "{{ nftables.rules.files[item] }}"
+  when: "item is defined"
+
+  #'<group_identifier>': '<relative-location>'
+- block:
+  - name: Create main rule file
+    template:
+      src: "{{ value }}"
+      dest: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+  when: value is string
+
+  #'<group_identifier>':
+  #  main: <relative-location>
+  #  '<identifier>': '<relative-location>'
+- block:
+  - set_fact:
+      items: "{{ nftables.rules.files[item] }}"
+    
+  - block:
+    - name: Create main rule file
+      template:
+        src: "{{ items['main'] }}"
+        dest: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+
+    - name: Include rule files
+      lineinfile:
+        path: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+        regexp: "include\\s+(\"|')\\/etc\\/nftables\\/ansible-managed\\/{{ group_identifier }}\\/.*$"
+        line: 'include "/etc/nftables/ansible-managed/{{ group_identifier }}/*.nft"'
+    when: items['main'] is defined
+
+  - name: Create group folder
+    file:
+      path: "/etc/nftables/ansible-managed/{{ group_identifier }}/"
+      state: directory
+    when: items|length > 0
+
+  - set_fact:
+      test: "{{ items | dict2items | selectattr('key', 'ne', 'main') }}"
+
+  - name: Create included rule files
+    template:
+      src: "{{ fileItem.value }}"
+      dest: "/etc/nftables/ansible-managed/{{ group_identifier }}/{{ fileItem.key }}.nft"
+    loop: "{{ items | dict2items | selectattr('key', 'ne', 'main') }}"
+    loop_control:
+      loop_var: fileItem
+
+  when: value is mapping

nftables/tasks/deploy-rules/per-group-template.yml

@@ -0,0 +1,48 @@
+- set_fact:
+    group_identifier: "{{ item }}"
+    value: "{{ nftables.rules.raw[item] }}"
+  when: "item is defined"
+
+  #'<group_identifier>': '<content>'
+- block:
+  - name: Create main rule file
+    copy:
+      content: "{{ value }}"
+      dest: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+  when: value is string
+
+  #'<group_identifier>':
+  #  main: <content>
+  #  '<identifier>': '<content>'
+- block:
+  - set_fact:
+      items: "{{ nftables.rules.raw[item] }}"
+  
+  - block:
+    - name: Create main rule file
+      copy:
+        content: "{{ items['main'] }}"
+        dest: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+
+    - name: Include rule files
+      lineinfile:
+        path: "/etc/nftables/ansible-managed/{{ group_identifier }}.nft"
+        regexp: "include\\s+(\"|')\\/etc\\/nftables\\/ansible-managed\\/{{ group_identifier }}\\/.*$"
+        line: 'include "/etc/nftables/ansible-managed/{{ group_identifier }}/*.nft"'
+    when: items['main'] is defined
+
+  - name: Create group folder
+    file:
+      path: "/etc/nftables/ansible-managed/{{ group_identifier }}/"
+      state: directory
+    when: items|length > 0
+
+  - name: Create included rule files
+    copy:
+      content: "{{ included_item.value }}"
+      dest: "/etc/nftables/ansible-managed/{{ group_identifier }}/{{ included_item.key }}.nft"
+    loop: "{{ items | dict2items | selectattr('key', 'ne', 'main') }}"
+    loop_control:
+      loop_var: included_item
+
+  when: value is mapping

nftables/tasks/install-package.yml

@@ -0,0 +1,4 @@
+- name: Install Packages
+  package:
+    name:
+      - nftables

nftables/tasks/main.yml

@@ -0,0 +1,7 @@
+- import_tasks: ./prerequisites.yml
+
+- import_tasks: ./setup-packages.yml
+
+- import_tasks: ./deploy-rules/main.yml
+
+- import_tasks: ./apply-files.yml

nftables/tasks/prerequisites.yml

@@ -0,0 +1,13 @@
+# Defaults if missing
+- name: Set defaults if missing
+  set_fact:
+    nftables:
+      rules:
+        files: "{{ nftables.rules.files | default({}) | combine({}) }}"
+        raw: "{{ nftables.rules.raw | default({}) | combine({}) }}"
+    combined_rules: "{{ nftables.rules.raw | combine(nftables.rules.files, recursive=true) }}"
+
+#- name: Check items for consistency
+#  assert:
+#    that: "{{ nftables.rules.files.values() | length }} + {{ nftables.rules.raw.values() | length }} == {{ combined_rules.values() | length }}"
+#    fail_msg: "files and raw rules share the same identifier"

nftables/tasks/remove-files.yml

@@ -0,0 +1,21 @@
+- name: Handle removed group files
+  block:
+  - find:
+      paths: /etc/nftables/ansible-managed/
+      file_type: 'any'
+      excludes: '{% for item in combined_rules %}{{ item }},{{ item }}.nft,{% endfor %}'
+      depth: 1
+    register: removeFiles
+
+  - file:
+      path: "{{ fileItem.path }}"
+      state: absent
+    loop: "{{ removeFiles.files }}"
+    loop_control:
+      label: "{{ fileItem.path }}"
+      loop_var: fileItem
+
+- name: Handle removed included files per group
+  include_tasks: ./remove-per-group.yml
+  with_items:
+  - "{{ combined_rules | list }}"

nftables/tasks/remove-per-group.yml

@@ -0,0 +1,20 @@
+- set_fact:
+    group_identifier: "{{ item }}"
+    group_items: "{{ combined_rules[item] }}"
+
+- block:
+  - find:
+      paths: "/etc/nftables/ansible-managed/{{ group_identifier }}/"
+      file_type: 'any'
+      excludes: '{% for item in group_items %}{{ item }}.nft,{% endfor %}'
+    register: removeFiles
+
+  - file:
+      path: "{{ fileItem.path }}"
+      state: absent
+    loop: "{{ removeFiles.files }}"
+    loop_control:
+      label: "{{ fileItem.path }}"
+      loop_var: fileItem
+
+  when: group_items is mapping

nftables/tasks/setup-packages.yml

@@ -0,0 +1,15 @@
+- name: Install nftables
+  package:
+    name:
+      - nftables
+
+- name: Create /etc/nftables/ansible-managed
+  file:
+    path: /etc/nftables/ansible-managed
+    state: directory
+
+- name: Include files in /etc/nftables/ansible-managed/ from /etc/nftables.conf
+  blockinfile:
+    path: /etc/nftables.conf
+    marker: "# {mark} ANSIBLE MANAGED BLOCK - nftables"
+    content: 'include "/etc/nftables/ansible-managed/*.nft"'

wireguard-ipv6-converter/defaults/wireguard-ipv6-converter.yml

@@ -0,0 +1,12 @@
+wireguard_ipv6_converter:
+  version: latest
+
+  # see https://github.com/Ruakij/wg-ipv6-converter#31-environment
+  setup:
+    interface: wg0
+    #ipv6_format: fc12::%02x%02x:%02x%02x/%d
+    #filter_prefix: 100.100
+    #recheck_interval: 60s
+
+  service:
+    #bindTo: netbird.service

wireguard-ipv6-converter/tasks/deploy.yml

@@ -0,0 +1,11 @@
+- name: Get architecture
+  set_fact:
+    arch: "{{ 'amd64' if ansible_architecture == 'x86_64' else 'arm64' }}"
+    versionUri: "{% if wireguard_ipv6_converter.version == 'latest' %}latest/download{% else %}download/{{ wireguard_ipv6_converter.version }}{% endif %}"
+
+- name: Download binary
+  get_url:
+    url: https://github.com/Ruakij/wg-ipv6-converter/releases/{{ versionUri }}/wg-ipv6-converter_{{ arch }}
+    dest: /usr/local/bin/wg-ipv6-converter
+    mode: "744"
+  register: deployDownload

wireguard-ipv6-converter/tasks/main.yml

@@ -0,0 +1,3 @@
+- import_tasks: ./deploy.yml
+
+- import_tasks: ./setup-service.yml

wireguard-ipv6-converter/tasks/setup-service.yml

@@ -0,0 +1,27 @@
+- name: Deploy service
+  ansible.builtin.template:
+    src: wg-ipv6-conv.service.jinja2
+    dest: /etc/systemd/system/wg-ipv6-converter_{{ wireguard_ipv6_converter.setup.interface }}.service
+  register: serviceFile
+
+- name: Enable service
+  ansible.builtin.service:
+    name: wg-ipv6-converter_{{ wireguard_ipv6_converter.setup.interface }}
+    daemon-reload: true
+    enabled: true
+
+- name: Start service if interface exists already
+  ansible.builtin.service:
+    name: wg-ipv6-converter_{{ wireguard_ipv6_converter.setup.interface }}
+    state: "{{ 'restarted' if deployDownload.changed or serviceFile.changed else 'started' }}"
+  register: service
+  when: "wireguard_ipv6_converter.setup.interface in ansible_interfaces"
+
+- name: Pause for 5s to wait for program to have run
+  ansible.builtin.pause:
+    seconds: 5
+  when: "service.changed"
+
+- name: Gather facts to get changes
+  ansible.builtin.gather_facts:
+  when: "service.changed"

wireguard-ipv6-converter/templates/wg-ipv6-conv.service.jinja2

@@ -0,0 +1,29 @@
+[Unit]
+Description=WireGuard IPv6 converter for {{ wireguard_ipv6_converter.setup.interface }}
+{% if wireguard_ipv6_converter.service.bindTo is defined %}
+BindsTo={{ wireguard_ipv6_converter.service.bindTo }}
+After={{ wireguard_ipv6_converter.service.bindTo }}
+{% endif %}
+
+[Service]
+Type=simple
+{% if wireguard_ipv6_converter.service.bindTo is defined %}
+ExecStartPre=/bin/sleep 10
+{% endif %}
+ExecStart=/usr/local/bin/wg-ipv6-converter
+Restart=always
+RestartSec=30
+
+Environment="INTERFACE={{ wireguard_ipv6_converter.setup.interface }}"
+{% if wireguard_ipv6_converter.setup.ipv6_format is defined %}
+Environment="IPV6_FORMAT={{ wireguard_ipv6_converter.setup.ipv6_format }}"
+{% endif %}
+{% if wireguard_ipv6_converter.setup.filter_prefix is defined %}
+Environment="FILTER_PREFIX={{ wireguard_ipv6_converter.setup.filter_prefix }}"
+{% endif %}
+{% if wireguard_ipv6_converter.setup.recheck_interval is defined %}
+Environment="RECHECK_INTERVAL={{ wireguard_ipv6_converter.setup.recheck_interval }}"
+{% endif %}
+
+[Install]
+WantedBy=multi-user.target