[CA] [CA11] Navionics charts not available on second MFD

[CABrouwers]

I made a number of tests and believe if it could be a software bug.

1. I have established that the two MFDs are properly networked. a. If i try to select the master on either I can see them both. b. They share waypoints, routes, and tracks. c. if I manually disconnect the network cable, an error message on the slave warns me it has lost connection with the master.

2. I discovered two ways to force the slave to discover and display the maps available on the master: By rebooting the slave while the master is on or by disconnecting and reconnecting the network cable.

3. My hypothesis is that what happens is the following; when is switch on the power to the navigation system, both MFDs start concurrently; at some point, the slave looks for maps on the master but the master is not ready yet. The slave, however, does make any new attempt again until it is rebooted or the network is reconnected. (the data exchange protocol might be different in the details but similar in essence)

4. It looks to me it could be a software bug. I don't see a hardware explanation for the behavior and it started occurring after I upgrade the software.