This flag indicates whether DHCP vendor specific
configurations are enabled for this interface
or not.
Setting this flag to 'enabled' (the default)
results in sending 'Vendor Class Identifier'(VCI)
to DHCP server and requesting vendor specific
configurations from DHCP servers for this
interface. Refer to RFC 2132 for more details.
Setting this flag to 'disabled' results in not
sending VCI to DHCP server and not requesting
vendor specific configurations from DHCP servers.