Hi @martincom 

Thanks for posting in our business forum.

Do you know if there is a vendor supporting this? Please let me know and paste the related setup/config link as a reference.

AFAIK, RFC does not say the DHCP server can do this. If you can provide something else for me, that would be greatly appreciated.

  @martincom  I've utilized D-Link products that do.  I'll see if I can find one and post a screen shot of the configuration page that provides this functionality.