According to devmanual section on IUSE[1], '-' IUSE prefix is only good
for overriding repo-level USE settings (profiles/package.use), which we
don't have in Gentoo.
[1]: https://devmanual.gentoo.org/eclass-reference/ebuild/
Package-Manager: Portage-2.3.3, Repoman-2.3.1
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 ~ia64 ppc x86"
-IUSE="dbi doc json mysql nfacct +nfct +nflog pcap postgres sqlite -ulog"
+IUSE="dbi doc json mysql nfacct +nfct +nflog pcap postgres sqlite ulog"
RDEPEND="
|| ( net-firewall/iptables net-firewall/nftables )