# interval in minutes to connect to Red Hat Network. Any value below 20
# will result in blacklisting of the IP address.
This makes one think that it's technically possible to set $INTERVAL below
20, but source inspection reveals that it has a hard coded limit to 20
minutes in rhsnd.
an errata release of up2date will address the comment; additionally a config
file /etc/sysconfig/rhn/rhnsd has been added where you can edit the INTERVAL
value without touching the init script.