<<< packages_pkgcheck_scan >>>
    NonexistentBlocker: version 4.9.0: nonexistent blocker RDEPEND="!<net-dns/pdns-2.9.20-r1": no matches in repo history
    NonexistentBlocker: version 4.9.1: nonexistent blocker RDEPEND="!<net-dns/pdns-2.9.20-r1": no matches in repo history
<<< open bugs >>>
  https://bugs.gentoo.org/485198 net-dns/pdns-recursor_-_Improved_chroot_support
  https://bugs.gentoo.org/866219 &lt;net-dns/pdns-recursor-3.7.2:_DoS_when_protobuf_logging_is_enabled