/lib/firewalld/icmptypes/ Current File: //lib/firewalld/icmptypes/source-quench.xml

<?xml version="1.0" encoding="utf-8"?>
<icmptype>
  <short>Source Quench</short>
  <description>This error message is generated to tell a host to reduce the pace at which it is sending packets.</description>
  <destination ipv4="yes"/>
</icmptype>