* Protocol field values.
*/
#define PPP_IP 0x21 /* Internet Protocol */
+#define PPP_AT 0x29 /* AppleTalk Protocol */
#define PPP_IPX 0x2b /* IPX protocol */
#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
#define PPP_COMP 0xfd /* compressed packet */
#define PPP_IPCP 0x8021 /* IP Control Protocol */
+#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
#define PPP_IPXCP 0x802b /* IPX Control Protocol */
#define PPP_CCP 0x80fd /* Compression Control Protocol */
#define PPP_LCP 0xc021 /* Link Control Protocol */