ppp: handle LCP DiscardReq

accel-pppd/ppp/ppp_fsm.h

@@ -15,6 +15,7 @@ typedef enum {FSM_Initial=0,FSM_Starting,FSM_Closed,FSM_Stopped,FSM_Closing,FSM_
 #define PROTOREJ	8	/* Code Reject */
 #define ECHOREQ		9	/* Echo Request */
 #define ECHOREP		10	/* Echo Reply */
+#define DISCARDREQ	11	/* Discard Request */
 #define	IDENT		  12	/* Identification */
 
 struct ppp_t;

accel-pppd/ppp/ppp_lcp.c

@@ -862,6 +862,10 @@ static void lcp_recv(struct ppp_handler_t*h)
 				log_ppp_info2("recv [LCP ProtoRej id=%x <%04x>]\n", hdr->id, ntohs(*(uint16_t*)(hdr + 1)));
 			ppp_recv_proto_rej(lcp->ppp, ntohs(*(uint16_t *)(hdr + 1)));
 			break;
+		case DISCARDREQ:
+			if (conf_ppp_verbose)
+				log_ppp_info2("recv [LCP DiscardReq id=%x <magic %08x>]\n", hdr->id, ntohl(*(uint32_t*)(hdr + 1)));
+			break;
 		case IDENT:
 			if (conf_ppp_verbose) {
 				term_msg = _strndup((char*)(hdr + 1) + 4, ntohs(hdr->len) - 4 - 4);