question concerned with dynamic rules

[Igor Popov]

	Hi all,
I have a question concerned with dynamic rules, say I have such rules:
	ipfw check-state
	ipfw allow udp from me to any out keep-state
	
if ttl of my packet will be zero on some router in path, it sends me icmp 
error message ttl exceeded. Does last rule create dynamic rule that permit 
icmp error message? My experience with traceroute shows that a such rule is 
not created.

But with such rules:
	ipfw check-state
	ipfw allow udp from me to any out keep-state
	ipfw allow icmp from any to me icmptype 3,4,11,12 in
traceroute works.

-- 
The truth is what is; what should be is a dirty lie.
		-- Lenny Bruce