* A network node can be connected to at most eight links.

* The receiver window in the RMTP API is specified in bytes.

* An RMTP receiver knows the SAPs of the RAP server of
a network node, and of the one or more RMTP senders of that
node.

* An announcement for a multicast session is only removed
(by a RAP server) after the session has started.

* The announcement of a RAP server always fits in one DNP
packet.

* An RMTP receiver will not attempt to join a group after
the corresponding multicast session has started.

* When a network node is "rebooted", it will be given 
a configuration file that describes correctly at least the
current neighboors of that node.

* The RMTP sequence numbers should be 32-bit wide. 

* The unicast address 0 is reserved for special purposes 
(by your code), and it will never appear in the configuration
file as the address of a node.

* A checksum should identify errors in RAP and RMTP packets
that can also happen in the DNP header, i.e., the checksum 
should cover the entire DNP packet.