Draytek Telnet Command 1.11 - Manual (Page 29)

Telnet Command Reference Guide V1.1 23
2.4.16 ip dmz (for 2700/2950 series only)
Specify MAC address of certain device as the DMZ host.
ip dmz [mac]
Syntax Description
mac It means the MAC address of the device that you want to specify.
Example
>ip dmz ?
% ip dmz , now : 00-00-00-00-00-00
> ip dmz 11-22-33-44-55-66
> ip dmz ?
% ip dmz , now : 11-22-33-44-55-66
>