Address Format Constants
You identify each AppleTalk address structure by using a specific constant to indicate which address type you want to use. The permitted constants and their values are listed here:
enum { AF_ATALK_DDP = 0x0100, /* DDP address type */ AF_ATALK_DDPNBP = 0x0101, /* DDPNBP address type */ AF_ATALK_NBP = 0x0102, /* NBP address type */ AF_ATALK_MNODE = 0x0103 /* multinode address type */ };