Comment 17 for bug 1760047

Hi all, I am also experiencing same kind of issue. I am using latest neutron code

root@ctrl3:~# neutron-dhcp-agent --version
neutron-dhcp-agent 14.0.0.0b1
14.0.0~b1~git2019013137.7484700deb-0ubuntu1~cloud0

But the funny part is mine is not a busy environment. I have 3 ctrls and 5 compute nodes. When i try to launch a vm it may fail. But if i restart the dhcp agents while a vm spawns , then the port gets DHCP provisining completed.

I think there is a problem with network cache in my case.

Can any one explain how does network cache works in the agent case?