This may not be your issue but it sounds like something i have seen a long time ago, just throwing this out there. At one time a default behaior was , whatever host name the unit had when it first checked into DHCP it would then retain , even if you changed it. The fix was to disable DHCP option 12. Currently this would go in advanced settings in WMS as DHCPOptionsRemap=yes DisableOption12=yes .. Research first to see thats your problem. I think if you clear a units DHCP lease.. then change name and this new name is now the one it keeps reverting to.. that may signal its your issue.