Indicates the VLAN-based DHCPv6 option function.
Options:
1. enable(1) -indicates that the DHCPv6 option 18 and optin 37 function are enabled.
2. disable(2) -indicates that the DHCPv6 option 18 and optin 37 function are disabled.
This leaf is optional for creating a VLAN service profile.
The global DHCPv6 option function can be configured in hwDhcpv6OptionStatus
of HUAWEI-DHCPV6-RELAY-MIB. The final status of the DHCPv6 option
function is determined by its global-level switch and VLAN-level switch.
The DHCPv6 option function of a VLAN is enabled only when
the switches at both levels are enabled.