On Fri, 05 May 2006 11:08:23 -0400
George Nychis [off-list ref] wrote:

Hi,

I need help finding this patch that Stephen made.

He sent me a patch, but i do not think its related to the patch that
solved this problem.  I will include the patch he did forward to me at
the bottom.

However here is the problem, i even rtied his misspelling of change :)

thorium-ini 15849-tests # tc qdisc add dev ath0 root handle 1:0 netem
drop 0%
thorium-ini 15849-tests # tc qdisc add dev ath0 parent 1:1 handle 10:
xcp capacity 54Mbit limit 500
thorium-ini 15849-tests # tc qdisc change dev ath0 root handle 1:0 netem
drop 1%
RTNETLINK answers: Invalid argument

The problem was you are giving handle 1:0 so the change request was
going to xcp. And xcp doesn't understand netem rtnetlink message.

You want to do:
# tc qdisc change dev ath0 root netem drop 1%