---
- name: "enable ipv4 forwarding"
  ansible.posix.sysctl:
    name: "net.ipv4.ip_forward"
    value: "1"
    sysctl_file: "/etc/sysctl.d/local.conf"
    reload: true

- name: "enable ipv6 forwarding"
  ansible.posix.sysctl:
    name: "net.ipv6.conf.all.forwarding"
    value: "1"
    sysctl_file: "/etc/sysctl.d/local.conf"
    reload: true

- name: "keep ipv6 addresses on link down"
  ansible.posix.sysctl:
    name: "net.ipv6.conf.all.keep_addr_on_down"
    value: "1"
    sysctl_file: "/etc/sysctl.d/local.conf"
    reload: true

- name: "create network directory hierarchy"
  ansible.builtin.file:
    path: "{{ system_etc_root_directory }}/{{ item }}"
    state: "directory"
    mode: 0755
  loop:
    - "network"
    - "network/utils"
    - "network/interfaces"

- name: "ifupdown script"
  ansible.builtin.template:
    src: "./ifupdown.sh"
    dest: "{{ system_etc_root_directory }}/network/utils/ifupdown.sh"
    mode: 0755

- name: "symlink ifupdown script to /etc/network"
  ansible.builtin.file:
    src: "{{ system_etc_root_directory }}/network/utils/ifupdown.sh"
    dest: "/etc/network/{{ item }}/the-nine-worlds"
    state: "link"
  loop:
    - "if-pre-up.d"
    - "if-up.d"
    - "if-down.d"
    - "if-post-down.d"

- name: "ensure bridge-utils is not installed"
  ansible.builtin.apt:
    name: "bridge-utils"
    state: "absent"
    purge: true