Option to be informed about IP address change (notification).

The stack can inform the host application, if the IP address has changed. In case, the application
requires this information, the application can combine the two services ‘Socket Poll service’ and ‘Get
Interface Addresses service’.
Using the Socket Poll service, the application will be aware about changes of the IP address. To
accomplish this, the Poll service offers a specific socket handle: SOCK_HANDLE_IPV4CHANGE
(0xF000). After the application receives the information about the change of the IP address, the
application can read the current IP address using the Get Interface Addresses service.
This mechanism and both services ‘Socket Poll’ and ‘Get Interface Addresses’ are described in the
Socket API manual.

Note: This option is availabe through communication channel 1
„Network Service Channel“ of the dual-port memory.