[SR-Users] reply when drop() in branch route

[Juha Heinanen]

Daniel-Constantin Mierla writes:

 > I think the codes are taken from error.h now, at least for this 
 > particular case is E_CFG, which is -6 -- on the idea that error code was 
 > triggered by cfg action. Andrei should confirm whether is error.h 
 > driving the codes or not with the new tm. However, k 1.5 codes don't
 > apply.

then it would be good to document the current list in t_relay()
README.  i'll add this request to the tracker.

-- juha