I set everything to use TFTP smart proxy provisioning. I followed guides and documentation I found. I already made it happen 1 year ago so I knew it was possible.
The "interface" tab in a new host definition is new since my last try.
About the 3 checkboxes in this interface tab I only checked the last two ones.
I had no success.
Finaly I checked the first one, "managed" and tftp works now. By "work" I mean forman starts to download netboot images from the repo I defined in Installation media.

I open this issue because this first checkbox "managed" explicitely talk about DHCP and DNS... and in my situation I do not use them.

Sorry if I am wrong!

And really thanks for this amazing job you do with Foreman ! My use of it is massive Linux Desktops deployement on bare-metal.

Seb from New-caledonia