>How do I determine how large the queue is for fragmented IP packets 
>on my system? Is that number changeable?

	sysctl MIB net.inet.ip.maxfragpackets is the maximum allowable
	reassembly queue size (counted by # of original packets, i guess).
	to get the current queue size, you need to use kmem to see
	variable "ip_nfragpackets" (sys/netinet/ip_input.c).

itojun