>  flow-tools-0.68-alt2.0	Requires	python-base
> +flow-tools-0.68-alt2.0	Requires	python2.4(getopt)
> +flow-tools-0.68-alt2.0	Requires	python2.4(os)
> +flow-tools-0.68-alt2.0	Requires	python2.4(rrdtool)
> +flow-tools-0.68-alt2.0	Requires	python2.4(string)
>  flow-tools-0.68-alt2.0	Requires	rtld(GNU_HASH)

Зависимость на python2.4(rrdtool) правильная.

$ rpmpeek flow-tools-0.68-alt2.0.i586.rpm grep -r rrdtool ./usr/bin
./usr/bin/flow-rpt2rrd:import rrdtool
./usr/bin/flow-rpt2rrd:      rrdtool.create(rrdFile, *rrdParams)
./usr/bin/flow-rpt2rrd:    rrdtool.update(rrdFile,update)
./usr/bin/flow-log2rrd:import rrdtool
./usr/bin/flow-log2rrd:        rrdtool.create(rrdFile, '--start', str(int(tv['now']) - 300),
./usr/bin/flow-log2rrd:        rrdtool.create(rrdFile, '--start', str(int(tv['now']) - 300),
./usr/bin/flow-log2rrd:  rrdtool.update(rrdFile, update)
$