[sr-dev] t_relay with param is unknown

[Juha Heinanen]

Andrei Pelinescu-Onciul writes:

 > No, if t_relay() returns negative, the failure route is not executed
 > (since the transaction was not created in the first place).

so do we have the same problem as in k that if udp destination is
unreachable, but packet can be sent out, failure route is executed, but
if tcp destination is unreachable, failure route is not executed?

-- juha