[knot-dns-users] preserve case in labels?

Hi, we're using knot DNS (2.0.2) on one of our primaries, to balance out "BIND is used everywhere". So far, we're quite happy, but today I got a complaint from our hostmaster team - triggered by a warning from DENIC that "our SOA records are inconsistent". Turns out they are, if you look at uppercase/lowercase... $ dig +short @ns.space.net space.net soa ns.space.net. hostmaster.space.net. 2016040601 28800 3600 864000 1800 $ dig +short @ns3.dns.space.net space.net soa ns.Space.Net. hostmaster.Space.Net. 2016040601 28800 3600 864000 1800 first one is knot, second is BIND, and the "mixed case" spelling is what the zone master (hidden primary) is distributing. (I understand that DNS is not case-significant, but we're using upper case in DNS labels because we like it that way...) Looking at labels inside the zone (dig axfr) shows that knot is lowercasing *everything*, not only the SOA records. So, I started looking whether there is a switch that can change knot's behaviour to just leave the labels alone, and do not lowercase everything. Google did not find anything, neither did "man knotd" or "man knot.conf". So, is there a hidden switch or compile-time feature to achieve this? thanks in advance, Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279