Property of DHCP relay option 82 verbose format.
The value can be set by user only when the value
of h3cDHCPROption82IfFormat is set with 'verbose'.
If the value of h3cDHCPROption82IfFormat is
'normal', the value is automatically set with
'invalid'. the value can not be set with 'invalid'
by user.
'mac' indicates the option 82 verbose format is
filled in with the mac of DHCP relay input
interface. If the value of h3cDHCPROption82IfFormat
is set with 'verbose', the value is automatically
set with 'mac'.
'sysname' indicates the option 82 verbose format
is filled in with the name of the DHCP relay.
'userdefine' indicates the option 82 verbose format
is filled in with the string defined by user.
If the value is set with 'userdefine', the value of
h3cDHCPROption82IfUsrDefString must be set
simultaneously.