This object indicates the field selected corresponding the condition.
The value (0) indicates that the field is classified by destination MAC.
The value (1) indicates that the field is classified by source MAC.
The value (2) indicates that the field is classified by ethernet user priority.
The value (3) indicates that the field is classified by VLAN ID.
The value (4) indicates that the field is classified by ETH type.
The value (5) indicates that the field is classified by destination IPv4 address.
The value (6) indicates that the field is classified by source IPv4 address.
The value (7) indicates that the field is classified by IP protocol type.
The value (8) indicates that the field is classified by IPv4 DSCP.
The value (9) indicates that the field is classified by IPv6 DSCP.
The value (10) indicates that the field is classified by source port of layer 4 protocol.
The value (11) indicates that the field is classified by destination port of layer 4 protocol.
The value (12) indicates that the field is classified by IP version.
The value (13) indicates that the field is classified by IPv6 flow label.
The value (14) indicates that the field is classified by destination IPv6 address.
The value (15) indicates that the field is classified by source IPv6 address.
The value (16) indicates that the field is classified by prefix of destination IPv6 address.
The value (17) indicates that the field is classified by prefix of source IPv6 address.
The value (18) indicates that the field is classified by IPv6 next header.