The suggested fix of adding a line to the dnssec-tools.conf file zonefile-parser Net::DNS::ZoneFile
cannot be right. After re-starting rollerd, and waiting an hour, this message is printed out: zonefile parser Net::DNS::ZoneFile not usable; using default parser Net::DNS::ZoneFile::Fast at /usr/share/perl5/Net/DNS/SEC/Tools/dnssectools.pm line 364. However, unlike before, at least this time, rollerd did not crash after that first hour, so ... ??? -- Linas