1#@!#!123s

: / proc / self / root / lib / firewalld / icmptypes /

Filename : host-unknown.xml

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<?xml version="1.0" encoding="utf-8"?>
<icmptype>
  <short>Host Unknown</short>
  <description>This error message is sent if the destination host is unknown.</description>
  <destination ipv4="yes"/>
  <destination ipv6="no"/>
</icmptype>