** Changed in: oslo.utils
Status: In Progress => Fix Released
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/2073894
Title:
IPv6 dns nameservers described with their scope on the IP are not
supported
Status in neutron:
Fix Released
Status in oslo.utils:
Fix Released
Bug description:
When updating a port, we sometimes need to check dns nameserver ips.
When this happens, if the DNS resolver file (resolv.conf) includes an
address with scope like fe80::5054:ff:fe96:8af7%eth2, oslo_utils
is_valid_ipv6 detects this as valid ipv6 input, but netaddr will raise
an exception since this is not strictly just the IPv6 address, and
therefore the port update fails with a raised exception and the port
is deleted.
On a normal scenario, this means that the metadata port cannot be
spawned and therefore no VMs can be properly configured using
metadata.
[resolv.conf example]
# Generated by NetworkManager
nameserver 10.0.0.1
nameserver fe80::5054:ff:fe96:8af7%eth2
nameserver 2620:52:0:13b8::fe
This was found on an environment using Train, but affects every
version.
100% Reproducible, just need to try to spawn a VM on an environment
with the resolv.conf similar to the example.
Traceback found on controller logs:
https://paste.opendev.org/show/bzqgpsJRifX0uovHw5nJ/
From the compute logs we see the metadata port was deleted after the
exception:
2024-07-18 04:38:06.036 49524 DEBUG
networking_ovn.agent.metadata.agent [-] There is no metadata port for
network 75b73d16-cb05-42d1-84c5-19eccf3a252d or it has no MAC or IP
addresses configured, tearing the namespace down if needed
_get_provision_params /usr/lib/python3.6/site-
packages/networking_ovn/agent/metadata/agent.py:474
To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/2073894/+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
