Lack of resources on reception of ShutDown indication from TCP/IP stack

In case the encapsulation task receives a shutdown indication (0x0314) (triggered by for example unplugging the ethernet cable) from the TCP/IP stack, it can happen that the connection end points, which handle the opened sockets, are not properly de-initialized so that they remain in a state where they cannot be used anymore. This can lead to a situation where the device is not able to communicate on the network anymore.

In addition, when having 64 connections open (Scanner) it can happen that the firmware runs out of packet for a short time due to many connection indications and transport abort indications.