DHCP search suffix - possible to turn off?

[dphonov2]

Hi All,

Services --> DHCP4 says if I leave the field blank, it will use system settings.

If I go to system settings, I can't leave it blank.

My question is, how do I hand out IP's only - and not include a search domain or dns suffix list?

Edit: the backstory is I'm seeing clients request a FQDN over DNS such as x.y.z but end up tacking on x.y.z.my.local.domain