This identifies the PFE notification type for this row's stats.
Below is a description of each notification type:
1. illegal Packets with invalid notification type.
2. unclassified Packets that did not have a key lookup
performed on them.
3. option Packets which have L3 options present.
4. nextHop Packets that are destined to the host.
5. discard Used when a discarded packet is sent to the
route processor.
6. sample Unused.
7. redirect This is used when a packet is being sent out
on the interface it came in on.
8. dontFragment This is used that a packet needs to be
fragmented but the DF (don't fragment) bit
is set.
9. cfdf When an MTU exceeded indication is
triggered by the CF chip and the packet has
DF (don't fragment) set.
10. poison Packets that resolved to a poisoned next
hop index.
11. unknown Packets of unknown notification type.
12. specialMemPkt Packets with special memory pkt type notification used in diagnostics.
13. autoconfig Packets with autoconfig PFE notification type used for dynamic VLANs.
14. reject Packets of reject PFE notification type.