bind10-devel-20120119 recurrent RRSIG query warnings

[Spain, Dr. Jeffry A.]

I'm running a bind10-devel-20120119 server configured as a slave and receiving DNSSEC-signed zone data from a bind9.9.0rc4 server. About every four hours, I see ten pairs of log messages like the following in the bind10 server's log:

2012-02-24 03:36:50.926 DEBUG [b10-auth.datasrc] DATASRC_QUERY_PROCESS processing query 'jaspain.net./RRSIG' in the 'IN' class
2012-02-24 03:36:50.927 WARN  [b10-auth.datasrc] DATASRC_QUERY_RRSIG unable to answer RRSIG query @@Missing placeholder %1 for 'jaspain.net.'@@

The warning messages seem to have some improper parameter substitution obscuring their meaning. What is the significance of this, if any? Thanks.

Jeffry A. Spain
Network Administrator
Cincinnati Country Day School