2009-06-02 2009-08-24 0-127 Specification Required 128-255 First Come First Served 0 Invalid Value 1 Destination Prefix 2 Source Prefix 3 IP Protocol 4 Port 5 Destination port 6 Source port 7 ICMP type 8 ICMP code 9 TCP flags 10 Packet length 11 DSCP 12 Fragment 13-255 Unassigned