I know that we can create a hierarchy within IPAM to allow for overlapping IP addresses. However, we support multiple customer networks where the addresses can easily overlap with each other and the polling of the DHCP server may be in separate Customer networks. I'm looking for the Polling Engine (where there is a dedicated polling engine for the customer) or even better a Custom field (such as the customer name) to be the hierarchy definition. There is also the need for the hierarchy not just to be about the DHCP servers as each customer may have a separate set of fixed IP address ranges.