Hi @mrigoulot,
In the domain advanced settings, there is an option called "Build L2 Topology" - (Filter DHCP Entries).
This option will help to remove the single MAC entry that has multiple IP addresses in one IP table.
The logic is only applied for unknown end systems that are not discovered in the NetBrain Domain.
This logic is typically designed for wireless users in order to maintain L2 topology accuracy when wireless users are roaming in the corporate IP network.
The logic is applied based on VLAN Group.
If you find abnormal deletions in one IP table in a specific use case, please reach out to support@netbraintech.com. We will collect one IP table data for analysis.
Best Regards,
Michael Ye