In modern Poky the facade is gone and the data dictionary needs
to be accessed directly. This commit is catching up with it. It
was build tested on dora as well. I have not checked if it is
changing the checksums of a dora build.
Yocto is now using iproute2 4.4 and the tools we packaged into
the main package are now available as extra packages and we can
just drop our extension for master.