[LARTC] RED to use ECN (or work at all?)

[Daniel Schaffrath <daniel.schaffrath@mac.com>]

Dear Community,

sorry for the somewhat dumb question.  Maybe someone has any pointer  
to how to setup the RED queue to mark pakets with ECN. In particular  
what are appropriate parameter settings for limit, min, max, etc.
All my trials end up with either "RTNETLINK answers: Invalid  
argument", although the command line (at least for me) looks fine in  
regard to what is said on the man page.
"tc qdisc replace dev lo red limit 10kb min 2kb max 8kb avpkt 1000  
burst 12 ecn" being one such example.
I am using kernel version 2.6.16.29 and the most recent iproute2  
package.
Thanks in advance,
Daniel

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