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Fix lost IPv6 connectivity on old Debian Buster images when migrating to routed IP

Reviewed on 22 January 2024Published on 22 January 2024

On older Debian Buster images, the installed custom version of cloud-init may interfere with the IPv6 connectivity when the Instance has been transitioned to use routed IP. This may be avoided by installing a newer version of cloud-init prior to the migration to routed IP. The procedure is also valid to recover connectivity for an Instance already using routed IP. The procedure to install the newer cloud-init is as follows:

  • Install the new debian-stable PPA. The URL of the PPA may be configured to use the noble series. Make sure that you replace it with bionic in the URL.
rm -f /etc/apt/sources.list.d/scaleway-ubuntu-stable-bionic.list
add-apt-repository ppa:scaleway/debian-staging
vi /etc/apt/sources.list.d/scaleway-ubuntu-debian-staging-noble.list
Replace `noble` with `bionic`

Following this change, a new version of scaleway-ecosystem and cloud-init may be installed. It is important to clean the previous cloud-init data as the new version contains a structure that may cause a failure of cloud-init at the next boot.

apt update
apt -y install scaleway-ecosystem cloud-init
cloud-init clean

Reboot the Instance for your changes to be taken into effect.

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