NBNS performs the same function as LLMNR,
but using UDP broadcast packets
instead of multi cast packets. Browsers normally only attempt to use
NBNS after attempts to use LLMNR have failed.
must be set to 1 in FreeRTOSIPConfig.h for NBNS to be
enabled. As with LLMNR, the application writer must provide the
xApplicationDNSQueryHook() callback function which takes a
character pointer as a parameter and returns pdTRUE if the
name passed into the function matches a name used to identify the node.