Tracked in Github Issues as https://github.com/canonical/cloud- init/issues/3997
** Bug watch added: github.com/canonical/cloud-init/issues #3997 https://github.com/canonical/cloud-init/issues/3997 ** Changed in: cloud-init Status: Triaged => Expired -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to cloud-init. https://bugs.launchpad.net/bugs/1980877 Title: v1 network render to netplan does not render IPv6 global nameserver address Status in cloud-init: Expired Bug description: cloud-init v 22.2: Example config with subnet `type: ipv6_slaac` doesn't render any nameserver information in config /etc/netplan/50-cloud-init.yaml when global nameserver is provided. Steps to reproduce: cat > network-config <<EOF version: 1 config: - type: physical name: eth0 mac_address: '06:70:c5:13:04:1e' subnets: - type: ipv6_slaac - type: nameserver address: - '2a03:7900:2:0:31:3:104:161' search: - 'demo.de' EOF PYTHONPATH=. python3 -m cloudinit.cmd.main devel net-convert --network-data=network-config --kind=yaml -D ubuntu -O netplan -d outputd # ACTUAL OUTPUT - lacks nameserver $ cat outputd/etc/netplan/50-cloud-init.yaml # This file is generated from information provided by the datasource. Changes # to it will not persist across an instance reboot. To disable cloud-init's # network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: {config: disabled} network: version: 2 ethernets: eth0: dhcp6: true match: macaddress: 06:70:c5:13:04:1e set-name: eth0 It may be that this isn't a bug because ipv6_slaac doesn't provide DNS information and requires that the a separate https://www.networkacademy.io/ccna/ipv6/stateless-dhcpv6 server is running on the network backplane that the node can separately contact to get DNS info. Currently cloud-init netplan renderer only applies global nameserfver information to subnets which contain an "addresses" config directive an no nameserver" directive. https://github.com/canonical/cloud-init/blob/main/cloudinit/net/netplan.py#L421-L422 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1980877/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp