tc qdisc add root dev $qossettings{'RED_DEV'} fq_codel >/dev/null 2>&1
tc qdisc del dev $qossettings{'IMQ_DEV'} root >/dev/null 2>&1
tc qdisc add root dev $qossettings{'RED_DEV'} fq_codel >/dev/null 2>&1
tc qdisc del dev $qossettings{'IMQ_DEV'} root >/dev/null 2>&1