gentoo-overlay/net-analyzer/vnstat/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>netmon</herd>
<longdescription>
  vnStat is a network traffic monitor for Linux that keeps a log of daily
  network traffic for the selected interface(s). vnStat isn't a packet sniffer.
  The traffic information is analyzed from the /proc filesystem. That way vnStat
  can be used even without root permissions.
</longdescription>
</pkgmetadata>