Cannot start traffic shaping script from /etc/ppp/ip-up

[AlterEgo]

After connectiing to the internet (rp-pppoe), I automagically start a firewall script, a dyndns update and a traffic shaping script, using /etc/ppp/ip-up.

The firewall en dyndns-script work nicely, therefore ip-up in itself is OK.
The traffic shaping script is certainly started from ip-up (I inserted a 'play wav-file' as last line into the script as a checkpoint), but it does not function: tc -s -d class ls dev ppp0 returns nothing.

When I run the script from the command prompt after the ppp connection is up, as works beautifully, and tc -s -d class ls dev ppp0 gives the desired output.

What's going on here

[sieter]

maybe that´s too easy, but is it possible that $PATH is not set
within your script?

maybe that helps:

#!/bin/bash
#Example config for an adsl link with 1024Kbit downstream and 128Kbit upstream

export PATH=/sbin:/usr/sbin

---zip------

[AlterEgo]

Thanks for the suggestion, but the path is fine.
Also all modules are loaded correctly.

And still it's not loading from /etc/ppp/ip-up.

Help !