openstack neutron – Fail to load radvd.service – Router advertisement daemon for IPv6

I’m facing this issue while setting up the neutron, it leading the OpenStack router not working. Below is output from journalctl -xe.

Subject: A start job for unit radvd.service has begun execution
Defined-By: systemd Support: http://www.ubuntu.com/support

A start job for unit radvd.service has begun execution.

The job identifier is 5471. Jan 28 13:28:10 controller radvd[30829]:
can’t open /etc/radvd.conf: No such file or directory Jan 28 13:28:10
controller radvd[30829]: Insecure file permissions, but continuing
anyway Jan 28 13:28:10 controller radvd[30829]: exiting, failed to
read config file Jan 28 13:28:10 controller systemd[1]: radvd.service:
Control process exited, code=exited, status=1/FAILURE Subject: Unit
process exited Defined-By: systemd Support:
http://www.ubuntu.com/support

An ExecStartPre= process belonging to unit radvd.service has exited.

The process’ exit code is ‘exited’ and its exit status is 1. Jan 28
13:28:10 controller systemd[1]: radvd.service: Failed with result
‘exit-code’. Subject: Unit failed Defined-By: systemd Support:
http://www.ubuntu.com/support

The unit radvd.service has entered the ‘failed’ state with result
‘exit-code’. Jan 28 13:28:10 controller systemd[1]: Failed to start
Router advertisement daemon for IPv6. Subject: A start job for unit
radvd.service has failed Defined-By: systemd Support:
http://www.ubuntu.com/support

A start job for unit radvd.service has finished with a failure.

The job identifier is 5471 and the job result is failed. Jan 28
13:28:12 controller multipathd[655]: sda: add missing path Jan 28
13:28:12 controller multipathd[655]: sda: failed to get udev uid:
Invalid argument Jan 28 13:28:12 controller multipathd[655]: sda:
failed to get sysfs uid: Invalid argument Jan 28 13:28:12 controller
multipathd[655]: sda: failed to get sgio uid: No such file or
directory