After digging, strace´ing ... etc I found that the common error with eg.:
# tc qdisc add dev eth0 handle ffff: ingress
RTNETLINK answers: No such file or directory
is due to *iproute2* tool default configuration (and most iproute precompiled
packages) in addition to correct kernel setup.
You must change in
iproute2/Config:
TC_CONFIG_DIFFSERV=y
and recompile, etc ...
Regards...
--Juanjo
