Duplicate lines in DHCP lease history files

[#1]

Hello,

I am trying to extract the current active DHCP leases from 25 members and switched to downloading the lease history files using WAPI (querying for lease objects) after I noticed this was taking way too long. I am extracting these files by first retrieving the list of members and then downloading the lease history files afterward, by specifying each member in separate calls. I am seeing that there is a huge number of duplicate lines (95%) in the resulting CSV files.

Should these lease history files contain so many duplicate lines?

[#2]

If you're using DHCP Failover, there are two appliances that hold leases for each client.  Each lease will show up in an export, and they look identical except that the owner is different for each.