Setting upload bandwidth limit for an user account

# Setting upload bandwidth limit for an user.
# This user is only for the purpose of uploading stuff to YouTube.
# The purpose of this is to not inhibit normal web browsing / watching YouTube videos
# while another video is being uploaded.

iptables -t mangle -F OUTPUT
iptables -t mangle -A OUTPUT -p tcp -m owner --uid-owner yt_upload -j MARK --set-mark 10
ip6tables -t mangle -F OUTPUT
ip6tables -t mangle -A OUTPUT -p tcp -m owner --uid-owner yt_upload -j MARK --set-mark 10

# Configuration: Set device interface name and bandwidth limit.
i=br0
s=400kbit

tc qdisc del dev $i root
tc qdisc replace dev $i root handle 1: htb default 30
tc class replace dev $i parent 1: classid 1:1   htb rate $s burst 5k
tc class replace dev $i parent 1:1 classid 1:10 htb rate $s ceil $s
tc qdisc replace dev $i parent 1:10 handle 10:  sfq perturb 10
tc filter add dev $i parent 1:0 prio 0 protocol ip   handle 10 fw flowid 1:10
tc filter add dev $i parent 1:0 prio 0 protocol ipv6 handle 10 fw flowid 1:10