Hi.
RSP discovery does device name lookup by default.
You are able to disable it by turning on [Bypass name lookup] option.
The option is available in [Add Host(s)] GUI.
The option is off by default.
For hostname (in alarm), NAS probe also does device name lookup by default.
You are able to disable it by turning off [Use Default Name-Resolution. DNS, WINS etc.] option.
The option is on by default.
The option is [Name Services] > [Properties] in NAS probe GUI.
Regards,
Yu