3.1.5.1.1 Route Check Session
At this point, the message received has been correlated back to a Route Check Session object.
The Per-Route Check Session Handshake Response timer MUST be reset.
The End Time field MUST be set to the current system time plus 400 milliseconds after which the route check experiment is expected to end.
The Next Send Time field MUST be set to 0.
Finally, the Per-Route Check Session Resend timer MUST be enabled and set to fire immediately.