Zrobiłem to tak (inaczej nie dawało efektu)
<global>
iface inet ppp0 auto
iface local eth0 30.0.0.0/24
do not shape local ppp0 auto with 30.0.0.0
do not shape local 30.0.0.1/24 with 30.0.0.2/24
do not shape local 30.0.0.2/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.3/24
do not shape local 30.0.0.3/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.4/24
do not shape local 30.0.0.4/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.5/24
do not shape local 30.0.0.5/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.6/24
do not shape local 30.0.0.6/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.7/24
do not shape local 30.0.0.7/24 with 30.0.0.1/24
do not shape local 30.0.0.1/24 with 30.0.0.8/24
do not shape local 30.0.0.8/24 with 30.0.0.1/24
shape router true low 8kbps ceil 14kbps prio 2
stats unit kbps dump 5c file /var/www/nsstats.txt
resolve hostname false
method mark
reload 3s
</global>