We should filter the state (and other attributes) before shipping the data over DBus to systemctl.
Patch proposed on mailing list: http://lists.freedesktop.org/archives/systemd-devel/2014-April/018950.html
Fixed in master: http://cgit.freedesktop.org/systemd/systemd/commit/?id=cdc06ed7b6120c1049305fa7033f228ee9d86043
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