gentoo-overlay/sys-apps/iproute2/metadata.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'>
<pkgmetadata>
<herd>base-system</herd>
<use>
	<flag name='berkdb'>build programs that use berkdb (just arpd)</flag>
	<flag name='iptables'>include support for iptables filtering</flag>
	<flag name='minimal'>only install ip and tc programs</flag>
</use>
</pkgmetadata>