The getnodeadd function returns the local node's DECnet address.
#include <ws2dnet.h>
struct dn_naddr FAR *WSAAPI getnodeadd(void);
The function returns the address of a static dn_naddr structure containing the local node's DECnet address. Applications should copy this data before issuing another getnodeadd call. If DECnet is not installed, it returns a NULL pointer