This could be handled programmatically in Lansweeper a couple of different ways.
1. WMIERROR will report the scan error as follows: WMIERROR DNS redirected to <NODE> but expected computer <CLUSTENAME>
2. Probably the easiest way would be to query the Cluster Account description field in Active Directory for the entry “Failover cluster virtual network name account”, and excluding it from scans this way.
Clusters come and go in our environment, having to manage manual exclusion lists is not very efficient or practical.