Batch interfaces should allow for diagnostic tags per failover node, just like UniInt based interfaces. Currently, there is no differentiation between the diagnostic tags for the primary failover node versus the backup failover node. The Location3 field is used to hold the failover ID of UniInt based interfaces so that there is a unique set of tags per failover node, however for some bizarre reason the Location3 field for batch interfaces stores the diagnostic tag index even though the diagnostic tag pointer exists in the ExDesc field. While not all diagnostics tags may be of interest for the backup node, some such as the heartbeat most definitely are.