Ubuntu
netplan.io package

Netplan on-link does not work for IPv6

Bug #1785493 reported by Jan Vanhercke
22
This bug affects 4 people
Affects Status Importance Assigned to Milestone
netplan.io (Ubuntu)
Fix Released
High
Unassigned

Bug Description

An IPv6 on-link route configuration has no effect.

network:
    version: 2
    ethernets:
        ens3:
            addresses:
                - fd00::1/128
            routes:
                - to: ::/0
                  via: fd00::2
                  on-link: true

Similar configuration for IPv4 works perfectly

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in netplan.io (Ubuntu):
status: New → Confirmed
Mathieu Trudel-Lapierre (cyphermox)
Changed in netplan.io (Ubuntu):
status: Confirmed → Triaged
importance: Undecided → High
Revision history for this message
michacassola (michacassola) wrote :

Hey Mathieu, when will this bug be fixed, it's been quite some time. Thanks!

Revision history for this message
Ryan Young (rayoung) wrote :

Fixed in Ubuntu 20.04! You just need to add a link-scope route for your gateway, as documented: https://netplan.io/examples/#reaching-a-directly-connected-gateway

network:
  ethernets:
    ens3:
      dhcp4: true
      addresses: [ "2602:ff75:7:34fd::/128" ]
      routes:
        - to: "2602:ff75:7::1/128"
          scope: link
        - to: "::/0"
          via: "2602:ff75:7::1"
          on-link: true
  version: 2

Changed in netplan.io (Ubuntu):
status: Triaged → Fix Released
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