Is there any reason why DEBUG_LEVEL should always return 0? Or am I
reading the documentation incorrectly?
This is not yet working - it requires a inter-node protocol changes, and
we didn't want to do that during stable series.
Interstingly, we forgot about it and it doesn't work in 2.1~rc either.
We need to fix this, thanks for the reminder!
Initial protocol changes submitted, the remaining client bits that will
allow this to work will probably land in 2.1.1.
The remaining bits were just committed, will be indeed in 2.1.1.