This bug is believed to be fixed in cloud-init in version 18.3. If this
is still a problem for you, please make a comment and set the state back
to New
Thank you.
** Changed in: cloud-init
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1749717
Title:
OpenStack datasource does not read network data
Status in cloud-init:
Fix Released
Bug description:
I'm using Openstack on Mitaka version. My projects use prefix
delegation to get IPv6 configuration and a common IPv4 DHCP. IPv4
addresses and configurations are working well. But for IPv6 my
instances just get the address, probably via RA of neutron. I'm
looking for a way to get other informations like that on dhcpv6 (name
servers, for example).
My subnet configuration is --ipv6_ra_mode dhcpv6-stateless
--ipv6_address_mode dhcpv6-stateless. I'm using Ubuntu Cloud Image
16.04 LTS.
Addresses are well generated and VMs have connectivity. But, dhcpv6
requests are not sent. We need that VMs request other information
(like nameservers) from dhcpv6 on boot. I've tested manually after
boot and it works.
I've seen that the file /etc/network/interfaces.d/50-cloud-init.cfg is
generated at boot time. Its content is:
---
# This file is generated from information provided by
# the datasource. Changes to it will not persist across an instance.
# 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}
auto lo
iface lo inet loopback
auto ens3
iface ens3 inet dhcp
---
To do what I'm thinking I just need to put these other lines in this
configuration file:
---
iface ens3 inet6 auto
pre-up sleep 5
dhcp 1
---
This was tested, running dhcpv6 manually. Sleep 5 is due a Ubuntu bug
and 'dhcp 1' indicates that information should be obtained from dhcpv6
server.
Is there some way to do cloud-init read that the subnet is configured
as dhcpv6 and then generate a configuration file as that? It's just
necessary that cloud-init launch the dhcpv6 client.
Thank you!
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