The format of the circuit ID suboption of DHCP
option 82.
'hex' is the hex format.
'ascii' is the ascii format.
'undefine' is the undefine format.
If the value of hpnicfDhcpRelay2IfOpt82CIDMode is
'normal', the value of this object is set to 'hex'
automatically and cannot be set to 'undefine'.
If the value of hpnicfDhcpRelay2IfOpt82CIDMode is
'verbose', the default value of this object is 'undefine'.
If the value of hpnicfDhcpRelay2IfOpt82CIDMode is
'userDefine', the value of this object is set to
'ascii' automatically and cannot be set to other value.
The SET operation of this object must be with the SET
operation of hpnicfDhcpRelay2IfOpt82CIDMode.