Since 13.14.0 we no longer receive UNREACHABLE or Lagged message.
We do still receive Reachable and Registered (just not unreachable or lagged).
The following is set:
We know devices are going unreachable, as they show as unknown in sip show peers.
There is just no logging on these two events.
NOTICE logging is enabled, as confirmed by receiving the Reachable and Registered events.