[Box Backup] Bandwidth throttling

[Achim]

Good afternoon:

I was wondering how Box Backup users have implemented bandwidth throttling:
do you do it on the client side or the server side? Since different clients
will have different uplinks, a per-client configuration seems more sensible
to me.

As Ben stated in February 2005 on the topic: "It's on my list. However, I
suggest dealing with it using pf style tools or on the firewall/router for
now." [1]. Is there a known-good way to integrate with Box Backup, or is it
perhaps possible to add something like rsync's "limit-rate" parameter to
the client configurations?

Thanks in advance, Achim

PS: I found the following options for bandwith throttling:

1/ Trickle is a portable lightweight userspace bandwidth shaper. It can run
in collaborative mode (together with trickled) or in stand alone mode.
http://monkey.org/~marius/pages/?page=trickle

2/ Netbrake is an utility to limit the bandwidth used by a process. It does
not require to modify the kernel, nor to be root in order to work.
http://www.hping.org/netbrake/

3/ OpenBSD's Class Based Queueing (CBQ) 
http://www.openbsd.org/faq/pf/queueing.html

4/ System-specific firewall settings

[1]
<http://lists.warhead.org.uk/pipermail/boxbackup/2005-February/001143.html>