Bridging stop working after power outage

I run Docker on Ubuntu server which is working on Odroid (ARM) and never had bigger issues. Recently I had power outage in home and when systemp backup I realised that all my containers stop communicated with external network.

I checked if ip forwarding is turned on and it is. I flushed iptables to allow docker service to reapply setup. Reinstalled docker service as well. Unfortunately nothing helps.

Bridge administrator shows that all is fine (I think):

$ brctl show
bridge name	bridge id		STP enabled	interfaces
docker0		8000.0242963f101b	no		vetha51a119


# ip route dev docker0  proto kernel  scope link  src 

What I discovered is that all start working when I run tcpdump on bridge0 interface which put this interface in promiscuous mode.

Anyone had some similar issues or have a clue how to bite it ?