HotSaNIC 0.5.0-pre5 on Debian Sarge, module networks
If hosts specified by their host name instead of IP, the RRD
database names include IPs instead of host names (int192.168.0.
1.rrd). Diagrams.pl expects database names in form (int<host
name specified in settings>.rrd) and thus reports no database.
This bug does not occure in ping module (which might have had
the same problem, i guess).