Ephemeral External IP address is not renewed when it should have

[rumai]

Hi,

Based on the documentation of ephemeral IP addresses, I know that an ephemeral IP address should be released on termination of resource unless it's reserved.
With that being I would like to take advantage of using ephemeral external IP addresses, but after some tests I see that a vm that had been created after the previous one's termination takes the same external IP address.
Also couldn't figure out any release time of ephemeral external IP address, as it gives me the same external IP address which I used and terminated an instance from previous day.

I am sure that I have no reserved IP addresses that can potentially use on my vm's.

Could you help me to understand if this is an expected behaviour by design or is there any solution to use make vm get a new ephemeral external IP address which will be different from the previous one?

thanks.