[Bug 2070434] Re: Configurate a IPv6 only and IPv4 disabled networking by netplan

[Lukas Märdian]

I'm closing this ticket in favour of the support request (question)
linked from the comment above.

** Changed in: netplan.io (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/2070434

Title:
  Configurate a IPv6 only and IPv4 disabled networking by netplan

Status in netplan.io package in Ubuntu:
  Invalid

Bug description:
  Hi all,

  We want to set up an IPv6-only network in a lab, and some Ubuntu ( release >=18.04) needs to be configured according to the networking requirements. I found a Netplan doc about disabling ipv6 by editing the Netplan YAML file:
  https://github.com/canonical/netplan/blob/main/doc/netplan-tutorial.md#editing-netplan-yaml-files-to-disable-ipv6
  ===
  When you finish, the whole configuration in second-interface.yaml should look like this:

  network:
    version: 2
    ethernets:
      enp6s0:
        dhcp4: true
        accept-ra: false
        link-local: []
  ===
   can I use the same way to disable IPv4? e.g.
  network:
    version: 2
    ethernets:
      eth0:
        dhcp4: false
        dhcp6: true
        accept-ra: false
        link-local: [ipv6]

  Or are there other ways to disable ipv4 on Ubuntu?

  In addition, Ubuntu 18.04 uses ifupdown with /etc/network/interfaces to configure the networking
  e.g.
  ===
  iface lo inet loopback
  auto lo

  auto eth0
  iface eth0 inet manual
  iface eth0 inet6 dhcp
  netmask 16
  accept_ra 1
  autoconf 1
  ===
  Can I add 'iface eth0 inet manual' in this file to disable IPv4?
  Thanks,

  Thanks,

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