Test flow:

• Setup with two compute nodes
• To create one vm instance on each compute
  • D1
  vm:10.0.123.4 DHCP: 10.0.123.2
  • D2
  vm:10.0.123.3
• Setting the floating ip for 2nd vm instance: 10.64.112.3
• Reset OVS on d1, capture rules before and after the reset;

Issue: missed rules for local group, for example DHCP & vm instance in the table=21 are missed (i.e. 10.0.0.123.4 and 10.0.123.2)
Result: no response on ping (I’ve tried to ping from d2 to 10.0.123.4 before and after reset)

Аfter initial analysis looks there is a race between the external group installation (group table) and the missing rules installation (which output to these groups) that after the restart.

The rules and log are attached.
Note: happened twice out of 10 attempts.