How to eliminate blocking traffic between instances inside virtual vxlan?

To eliminate traffic blocking between instances inside virtual vxlan, you need to enable the native firewall openvswitch instead of hybrid.

To do this, on the compute node, specify:

[securitygroup]
firewall_driver = openvswitch

Next, clear iptables:

iptables -F

Restart the agent:

systemctl restart neutron-openvswitch-agent