From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Hagood <david.hagood@gmail.com>
Subject: How to interpret time stamps in xt_recent?
Date: Fri, 02 May 2014 06:21:14 -0500
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I am trying to use the xt_recent netfilter under Linux 3.11 to implement 
a more reactive firewall. I want to be able to review when the most 
recent packet in any blocklist came in, but I don't know how to convert 
the last_seen and oldest_pkt fields into anything meaningful.

What exactly are these values representing? How can I convert them to a 
wall-clock time?