title: Is iptables thread safe?
body: <p>This seems to me to be a basic question, but google and SO fail to give me an answer. As the title says, is iptables thread safe? If I have multiple processes making calls to iptables, should I create a lock for myself?</p>
  
  <p>There seems to be some threads from 2009 querying if netfilter is thread-safe, with no solid resolution. I'm loathe to go check the actual code</p>