Error when removing static IP pool from vcloud external network

Hello all

We are facing an issue when trying to remove one ip pool from external network in vCloud Director 5.1.

Let's say that the name of the external network is "Internet" and two ranges of public IP addresses

are assigned to that network are:

72.130.233.90 - 72..130.233.93

and

72.130.233.101 - 72.130.233.126

Now, when trying to remove the first one, I'm getting this kind of error message:

"Operation: Updated Network 'Internet' (9548300f-7830-4f03-2e1b-c0ab1d8334f2)"

"Details: The following IP addresses are already being used: /72.130.233.90."

and process fails.

It seems that something is still holding that public IP address but there should be none.

Has anybody faced same issue and do you know, where we can see what is actually holding

that IP? When selecting "show ip allocations" it's not shown in the list.

Whole vCloud director is recently upgraded from 1.5 to 5.1

br, Sampo