The value of tDhcp6FilterParamsOptionMatch specifies the criteria that the DHCP6 option must match to trigger this filter entry. The value present(1) specifies that the DHCP6 option must be present, the value absent(2) specifies that the DHCP6 option must be absent. In these cases tDhcp6FilterParamsOptionValue will be reset to an empty string. A value string(3), string-exact(4), string-invert(5), string-exact-invert(6), hex(7), hex-exact(8), hex-invert(9) or hex-exact-invert(10) requires an octet string to be present in tDhcp6FilterParamsOptionValue to match against.