Network automatically dropped on lxd containers on a node

I’m facing a weird issue. On one of my nodes all the lxd containers lost their IPV4 and IPV6 info and I am unable to access internet from within the containers.

Everything was working smoothly till an hour ago. Please advice on what to do.

I had attached a network to my container and I attached it again but it still has no network info or access.

For now I have created a new network and added it to profile to make it work. It’s working now…
But it’s weird why the network interface goes blank suddenly. It has happened in past as well. Any suggestions would help