The value of vRtrIfDHCPRelayRemoteId specifies what information goes
into the remote-id suboption in the DHCP Relay packet. If the
value of this object is set to 'none', the remote-id suboption is
left blank. If the value of this object is set to 'mac',
the MAC address of the remote end is encoded in the suboption. If the
value of the object is set to 'remote-id', vRtrIfDHCPRelayRemoteIdStr
will be the remote-id.