[knot-dns-users] Cannot use unknown RRtypes in Knot?

Greetings. This seems a bit odd. I have a zone file with: ===== $TTL 6 test79.example.com. IN SOA foo.example.com. dns.test79.example.com. ( 201209150 5m 1m 2w 5m ) test79.example.com. IN NS foo.example.com. test79.example.com. IN TYPE79 \# 4 deadface ===== Trying to compile it gives: ===== Parsing file '/home/dns/Files/foo.conf', origin 'test79.example.com.' ... /home/dns/Files/foo.conf:4: error: bad unknown RDATA Parser finished with error, not dumping the zone! error: Compilation of 'test79.example.com.' failed, knot-zcompile return code was '1' ===== This zone file works fine in BIND, NSD, and PowerDNS. It seems that either Knot cannot use the standard mechanism for defining unknown RRtypes (RFC 3597), or it maybe has a different syntax. Clues are appreciated. --Paul Hoffman