The member function bringup() of class ThreadInterface redefines
parameter stack's default value to IPV6_STACK from the inherited default value
DEFAULT_STACK (in Interface).
The default value will be resolved statically, not by dispatch, so this
can cause confusion.
Similar arguments apply to LoWPANNDInterface and WisunInterface.
Added support for external RADIUS server configuration to Wi-SUN Border Router.
Added configuration functions and .json configuration options for:
- external RADIUS server IPv6 address
- RADIUS shared secret.
- RADIUS client retry trickle timer configuration. This can be used to set how fast
the RADIUS client retries Access-Request messages to RADIUS server in case reply
from server is not received.
```
connectivity
├── netsocket
├── lwipstack
├── nanostack
│ ├── mbed_lib.json // nanostack-interface's mbed_lib.json
│ ├── include
│ │ └── nanostack // headers from features/netsocket/nanostack-interface
│ ├── source // sources from features/netsocket/nanostack-interface
│ ├── coap-service // used by Thread only - deprecate?
│ ├── mbed-mesh-api
│ ├── nanostack-hal-mbed-cmsis-rtos // HAL porting layer for Nanostack on mbed with CMSIS-RTOS
│ ├── sal-stack-nanostack
│ └── sal-stack-nanostack-eventloop
├── cellular // previously in features/cellular/framework/
├── ...
```
This PR is a part of a wider \connectivity refactoring and implements the above new directory structure for \nanostack.