diff -Nru eicon-linux-0.5a/usermode/pppoeci.c eicon-linux-0.5b/usermode/pppoeci.c
--- eicon-linux-0.5a/usermode/pppoeci.c	Fri May 24 22:16:49 2002
+++ eicon-linux-0.5b/usermode/pppoeci.c	Mon Jun 10 20:11:58 2002
@@ -91,6 +91,9 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <pthread.h>
+#include <linux/if_tun.h>
+#include <linux/if.h>
+
 
 /* my USB library */
 #include "pusb.h"
@@ -147,6 +150,7 @@
 int gfdout;
 int g_fdin;
 
+
 #define CRC32_REMAINDER CBF43926
 #define CRC32_INITIAL 0xffffffff
 
@@ -305,8 +309,17 @@
 
 	for(;;) {
 
-		do {
-			r = read(fd, ppp_buf, sizeof(ppp_buf));
+		do {	ppp_buf[0]=0xaa;
+			ppp_buf[1]=0xaa;
+			ppp_buf[2]=0x03;
+			ppp_buf[3]=0x00;
+			ppp_buf[4]=0x80;
+			ppp_buf[5]=0xc2;
+			ppp_buf[6]=0x00;
+			ppp_buf[7]=0x07;
+			ppp_buf[8]=0x00;
+			ppp_buf[9]=0x00;
+			r = read(fd, ppp_buf + 10, sizeof(ppp_buf));
 		} while(r < 0 && errno == EINTR);
 
 		if(r < 0)
@@ -320,17 +333,17 @@
 		if(verbose>1) {
 			print_time();
 			printf(" Read from ppp, len = %d\n", r);
-			dump(ppp_buf, r);
+			dump(ppp_buf, r + 10);
 		}
 
 		if(r <= 0)
 			return r;
 
-		/* supress leading 2 bytes */
+		/* don't supress leading 2 bytes */
 
 		if(syncHDLC) {
 
-			if(r < 3)
+			if(r < 1)
 			{
 				print_time();
 				printf(" Read from ppp short on data, r=%d => ignored\n", r);
@@ -344,10 +357,10 @@
 				continue;
 			}
 
-			*buf = ppp_buf + 2;
-			*n = r - 2;
+			*buf = ppp_buf;
+			*n = r + 10;
 
-			return(r - 2);
+			return(r + 10);
 
 		}
 		else
@@ -373,20 +386,17 @@
 	int retries = 0;
 
 	if(syncHDLC) {
-		ppp_buf[0] = 0xff;	//FRAME_ADDR;
-		ppp_buf[1] = 0x03;	//FRAME_CTRL;
-
-		memcpy(ppp_buf + 2, buf, n);
+		memcpy(ppp_buf, buf + 10, n - 10 );
 
 		if(verbose>1) {
 			print_time();
-			printf(" writing to ppp, len = %d\n", n + 2);
-			dump(ppp_buf, n + 2);
+			printf(" writing to ppp, len = %d\n", n);
+			dump(ppp_buf, n - 10);
 		}
 
 	retry:
 
-		if((r = write(fd, ppp_buf, n + 2)) < 0) {
+		if((r = write(fd, ppp_buf, n - 10)) < 0) {
 
 			/*
 			* We sometimes run out of mbufs doing simultaneous
@@ -497,15 +507,13 @@
 	unsigned int crc1, crc2;
 
 	if(vpi != my_vpi || vci != my_vci) {
-/*
-		if(verbose) {
+			if(verbose){
 			printf("< pid=%d > ", this_process);
 			print_time();
 			printf(" vpi.vci mismatch (%d/%d instead of %d/%d) ... ignored!\n",
 				 vpi, vci, my_vpi, my_vci);
 			dump(cell_buf, CELL_DATA);
-		}
-*/
+			}
 		return(0);
 	
 	}
@@ -1094,11 +1102,36 @@
 	exit (-1);
 }
 
+
+int tap_open(char *dev)
+{
+    struct ifreq ifr;
+    int fd, err;
+
+    if( (fd = open("/dev/net/tun", O_RDWR | O_SYNC)) < 0 )
+       return -1;
+
+    memset(&ifr, 0, sizeof(ifr));
+    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+    if( *dev )
+       strncpy(ifr.ifr_name, dev, IFNAMSIZ);
+
+    if( (err = ioctl(fd, TUNSETIFF, (void *) &ifr)) < 0 ){
+       close(fd);
+       return err;
+    }
+    strcpy(dev, ifr.ifr_name);
+    return fd;
+}
+
+
+
 int main(int argc, char *argv[])
 {
 	const char *logfile = "/tmp/pppoa2.log";
 	int   fdin, fdout, log;
 	int   i;
+	char dev[20]="";
 
 	this_process = getpid();
 	log = 0;
@@ -1127,9 +1160,8 @@
 	if(verbose)
 		fprintf(stderr, "Using vpi.vci=%d.%d\n", my_vpi, my_vci);
 
-	/*Duplicate in and out fd*/
-	fdin  = dup(0);
-	fdout = dup(1);
+	/*in and out fd assigned to tap device*/
+	fdin  = fdout = tap_open(dev);
 
 	/*
 	* If the verbosity level is greater than 0
@@ -1243,7 +1275,7 @@
 	*/
 
 	if(isatty(fdin)) {
-/*#undef N_HDLC*/
+#undef N_HDLC
 #ifdef N_HDLC
 		int disc = N_HDLC;