Reference Manualsetd - set the NAT32 Domain Name
SYNOPSIS
setd [name]DESCRIPTION
When invoked with no argument, setd prints the current DNS domain. When invoked with one argument, setd sets the current DNS domain to name.NOTESThe altered setting is not recorded in any netcfg file or in the Windows Registry. To make the setting permanent, the command should be placed in file startup.
NAT32 determines the Domain Name at startup by extracting the appropriate value from the Windows Registry. If Windows has no notion of a Domain Name, then neither will NAT32.SEE ALSODomain Names assigned by Windows DHCP are not stored in the Windows Registry.
netcfg startup