Logging when max-src-states hit

[Daniel Hamlin <hamlin_(_at_)_rose-hulman_(_dot_)_edu>]

Is there a way to generate a log when a connection is denied due to a 
host exhausting it's max-src-states?

For example, this rule limits my computer to 10 connections:

pass out log quick on $ext_if from <my IP> to any keep state 
(max-src-states 10)

During testing, I was limited to 10 connections, as expected.  I would 
like to be able to log when the subsequent connections are dropped, for 
troubleshooting and tuning purposes.  I am able to get general src-state 
statistics, but nothing specific to indicate that a connection between 
two hosts was dropped because the max-src-states had been exhausted.

pfctl -vsS is useful to see how many states are currenlty active per 
host, but I hate to run this command periodically in a polling-type 
fashion to figure out whether or not my max-src-states is high enough.

I've searched MARC (max-src-states) but didn't find anything applicable.

Thanks for any info/pointers.

Dan Hamlin