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: / usr / lib / firewalld / icmptypes /

Filename : unknown-header-type.xml

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<?xml version="1.0" encoding="utf-8"?>
<icmptype>
  <short>Unknown Header Type</short>
  <description>This error message is sent if an unrecognized Next Header type encountered.</description>
  <destination ipv4="no"/>
  <destination ipv6="yes"/>
</icmptype>