Hostname Detection

Hi everyone,
I’m using the open-source version of OpenVAS, and I’m trying to get hostnames as part of my vulnerability scans. However, I’m only seeing IP addresses in the results. Is there a specific setting I need to enable to get OpenVAS to detect and display hostnames, not just IPs?

I’ve noticed that if I run scans with only TCP, no hostnames are detected at all. But if I include both “IANA TCP and top 100 Nmap UDP,” then some hostnames are detected. Additionally, I always set Reverse lookup unify and Only reverse lookup to NO.

Does anyone know why hostnames aren’t detected with TCP scans, but they are with UDP?
Any help on how to consistently resolve hostnames in the scan results would be much appreciated!

Thanks!

up please anyone