It appears that it is possible to have a stale SCTP connection
and this added LOGL_NOTICE and the VTY interface might help to
identify this situation in the future (the mean time of failure
is about five month).
This new interface allows to have multiple linksets, msc
connections and ways to connect those in one instance of
the osmo-stp. Forbid to reset linksets without an app.
This should avoid us getting an error as we are sending the
SLTM too fast. In one way this makes sense, on the other hand
we already have too many states and should remove some variables
This change allows to run multiple links over the same SCTP
connection or multiple SCTP connections. It does not yet
support fail over handling or load balancing but that seems
possible now.
We want to be able to support multiple links over different SCTP
connection and in the future also over the same connection. This
is the first step to separate the SCTP connection handling from the
link handling inside these messages.