diff -Naur -X exclude-files ac_cur/arch/um/drivers/ethertap_user.c ac/arch/um/drivers/ethertap_user.c
--- ac_cur/arch/um/drivers/ethertap_user.c	Tue Oct 30 18:27:12 2001
+++ ac/arch/um/drivers/ethertap_user.c	Sat Nov  3 00:02:29 2001
@@ -37,6 +37,7 @@
 	int control_remote;
 	int control_me;
 	int err;
+	char *output;
 };
 
 struct addr_change {
@@ -44,47 +45,43 @@
 	unsigned char addr[4];
 };
 
-static void etap_open_addr(unsigned char *addr, void *arg)
+static void etap_change(int op, unsigned char *addr, int fd)
 {
-	int fd = *((int *) arg);
 	struct addr_change change;
+	char *output;
 
-	change.what = ADD_ADDR;
+	change.what = op;
 	memcpy(change.addr, addr, sizeof(change.addr));
 	if(write(fd, &change, sizeof(change)) != sizeof(change))
-		printk("etap_add_addr - request failed, errno = %d\n",
+		printk("etap_change - request failed, errno = %d\n",
 		       errno);
+	if(!read_output(fd, &output)) printk("%s", output);
 }
 
-static void etap_close_addr(unsigned char *addr, void *arg)
+static void etap_open_addr(unsigned char *addr, void *arg)
 {
-	int fd = *((int *) arg);
-	struct addr_change change;
+	etap_change(ADD_ADDR, addr, *((int *) arg));
+}
 
-	change.what = DEL_ADDR;
-	memcpy(change.addr, addr, sizeof(change.addr));
-	if(write(fd, &change, sizeof(change)) != sizeof(change))
-		printk("etap_close_addr - request failed, errno = %d\n",
-		       errno);
+static void etap_close_addr(unsigned char *addr, void *arg)
+{
+	etap_change(DEL_ADDR, addr, *((int *) arg));
 }
 
 static void etap_tramp(void *arg)
 {
 	struct etap_open_data *data = arg;
-	int pid, status, n;
+	int pid, status;
 	char version_buf[sizeof("nnnnn\0")];
 	char data_fd_buf[sizeof("nnnnnn\0")];
-	char control_fd_buf[sizeof("nnnnnn\0")];
-	char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")], c;
+	char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
 	char *setup_args[] = { "uml_net", version_buf, "ethertap", data->name,
-			       data_fd_buf, control_fd_buf, gate_buf, NULL };
+			       data_fd_buf, gate_buf, NULL };
 	char *nosetup_args[] = { "uml_net", version_buf, "ethertap", 
-				 data->name, data_fd_buf, control_fd_buf, 
-				 NULL };
-	char **args;
+				 data->name, data_fd_buf, NULL };
+	char **args, c;
 
 	sprintf(data_fd_buf, "%d", data->data_remote);
-	sprintf(control_fd_buf, "%d", data->control_remote);
 	sprintf(version_buf, "%d", UML_NET_VERSION);
 	if(data->gate != NULL){
 		strcpy(gate_buf, data->gate);
@@ -93,30 +90,34 @@
 	else args = nosetup_args;
 	data->err = 0;
 	if((pid = fork()) == 0){
-		char zero = 0; /* XXX Not necessary */
-
+		dup2(data->control_remote, 1);
 		close(data->data_me);
 		close(data->control_me);
 		execvp(args[0], args);
 		printk("Exec of '%s' failed - errno = %d\n", args[0], errno);
-		write(data->control_remote, &zero, sizeof(zero));
-		exit(errno);
+		exit(1);
 	}
 	else if(pid < 0) data->err = errno;
 	close(data->data_remote);
 	close(data->control_remote);
-	n = read(data->control_me, &c, sizeof(c));
-	if(n != sizeof(c)){
-		printk("etap_open - failed to read response from helper : "
-		       "return = %d, errno = %d\n", n, errno);
+	if(read(data->control_me, &c, sizeof(c)) != sizeof(c)){
+		printk("etap_tramp : read of status failed, errno = %d\n",
+		       errno);
+		data->err = EINVAL;
+		return;
+	}
+	if(c != 1){
+		printk("etap_tramp : uml_net failed\n");
+		data->err = EINVAL;
 		if(waitpid(pid, &status, 0) < 0) data->err = errno;
 		else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1)){
 			printk("uml_net didn't exit with status 1\n");
-			data->err = EINVAL;
 		}
-		else data->err = EINVAL;
+		return;
 	}
-	else if(c != 1) data->err = EINVAL;
+	data->output = NULL;
+	if(read_output(data->control_me, &data->output))
+		data->err = EINVAL;
 }
 
 static int etap_open(void *data)
@@ -146,6 +147,10 @@
 	
 	tap_data.gate = pri->gate_addr;
 	tracing_cb(etap_tramp, &tap_data);
+	if(tap_data.output){
+		printk("%s", tap_data.output);
+		kfree(tap_data.output);
+	}
 	if(tap_data.err != 0){
 		printk("etap_tramp failed - errno = %d\n", tap_data.err);
 		return(-tap_data.err);
@@ -164,7 +169,9 @@
 	close(fd);
 	shutdown(pri->data_fd, SHUT_RDWR);
 	close(pri->data_fd);
+	pri->data_fd = -1;
 	close(pri->control_fd);
+	pri->control_fd = -1;
 }
 
 int etap_user_read(int fd, void *buf, int len, struct ethertap_data *pri)
diff -Naur -X exclude-files ac_cur/arch/um/drivers/net_user.c ac/arch/um/drivers/net_user.c
--- ac_cur/arch/um/drivers/net_user.c	Tue Oct 30 18:27:12 2001
+++ ac/arch/um/drivers/net_user.c	Sat Nov  3 00:02:29 2001
@@ -4,9 +4,11 @@
  */
 
 #include <stddef.h>
+#include <unistd.h>
 #include <stdio.h>
 #include <errno.h>
 #include "user.h"
+#include "user_util.h"
 #include "net_user.h"
 
 int tap_open_common(void *dev, int hw_setup, char *gate_addr)
@@ -49,6 +51,28 @@
 		ether[0] = 0xfe;
 		ether[1] = 0xfd;
 		set_ether_mac(dev, ether);
+	}
+	return(0);
+}
+
+int read_output(int fd, char **output_out)
+{
+	int n;
+	
+	if(read(fd, &n, sizeof(n)) != sizeof(n)){
+		printk("read_output - read of length failed, errno = %d\n",
+		       errno);
+		return(-1);
+	}
+	if((*output_out = um_kmalloc(n)) == NULL){
+		printk("read_output - kmalloc failed\n");
+		return(-1);
+	}
+	if(read(fd, *output_out, n) != n){
+		printk("read_output - read of data failed, errno = %d\n",
+		       errno);
+		kfree(*output_out);
+		return(-1);
 	}
 	return(0);
 }
diff -Naur -X exclude-files ac_cur/arch/um/drivers/net_user.h ac/arch/um/drivers/net_user.h
--- ac_cur/arch/um/drivers/net_user.h	Tue Oct 30 18:27:12 2001
+++ ac/arch/um/drivers/net_user.h	Sat Nov  3 00:02:29 2001
@@ -6,7 +6,7 @@
 #define ETH_HEADER_OTHER (14)
 #define ETH_MAX_PACKET (1500)
 
-#define UML_NET_VERSION (2)
+#define UML_NET_VERSION (3)
 
 struct net_user_info {
 	void (*init)(void *, void *);
@@ -28,6 +28,8 @@
 extern void free_output_buffer(void *buffer);
 
 extern int tap_open_common(void *dev, int hw_setup, char *gate_addr);
+
+extern int read_output(int fd, char **output_out);
 
 #endif
 
diff -Naur -X exclude-files ac_cur/arch/um/drivers/slip_user.c ac/arch/um/drivers/slip_user.c
--- ac_cur/arch/um/drivers/slip_user.c	Tue Oct 30 18:27:12 2001
+++ ac/arch/um/drivers/slip_user.c	Sat Nov  3 00:02:29 2001
@@ -55,21 +55,32 @@
 struct slip_tramp_data {
 	char **args;
 	int err;
+	char *output;
 };
 
 void slip_tramp(void *arg)
 {
 	struct slip_tramp_data *data = arg;
 	char **argv = data->args;
-	int status, pid;
+	int status, pid, fds[2];
 
 	data->err = 0;
+	data->output = NULL;
+	if(pipe(fds) != 0){
+		perror("slip_tramp : pipe failed");
+		data->err = EINVAL;
+		return;
+	}
 	if((pid = fork()) == 0){
+		dup2(fds[1], 1);
+		close(fds[0]);
 		execvp(argv[0], argv);
 		exit(errno);
 	}
 	else if(pid < 0) data->err = errno;
 	else {
+		close(fds[1]);
+		read_output(fds[0], &data->output);
 		if(waitpid(pid, &status, 0) < 0) data->err = errno;
 		else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)){
 			printk("'%s' didn't exit with status 0\n", argv[0]);
@@ -108,6 +119,10 @@
 		strcpy(gate_buf, pri->gate_addr);
 		slip_data.args = argv;
 		tracing_cb(slip_tramp, &slip_data);
+		if(slip_data.output != NULL){
+			printk("%s", slip_data.output);
+			kfree(slip_data.output);
+		}
 		if(slip_data.err != 0){
 			printk("slip_tramp failed - errno = %d\n", 
 			       slip_data.err);
@@ -137,7 +152,7 @@
 	struct slip_tramp_data slip_data;
 	char fd_buf[sizeof("nnnnnn\0")], addr_buf[sizeof("nnn.nnn.nnn.nnn\0")];
 	char version_buf[sizeof("nnnnn\0")];
-	char *argv[] = { "uml_net", "slip", version_buf, "down", fd_buf, 
+	char *argv[] = { "uml_net", version_buf, "slip", "down", fd_buf, 
 			 addr_buf, NULL };
 
 	sprintf(version_buf, "%d", UML_NET_VERSION);
@@ -145,6 +160,10 @@
 	dev_ip_addr(pri->dev, addr_buf, NULL);
 	slip_data.args = argv;
 	tracing_cb(slip_tramp, &slip_data);
+	if(slip_data.output != NULL){
+		printk("%s", slip_data.output);
+		kfree(slip_data.output);
+	}
 	if(slip_data.err != 0)
 		printk("slip_tramp failed - errno = %d\n", slip_data.err);
 	close(fd);
diff -Naur -X exclude-files ac_cur/arch/um/drivers/tuntap_user.c ac/arch/um/drivers/tuntap_user.c
--- ac_cur/arch/um/drivers/tuntap_user.c	Tue Oct 30 18:27:12 2001
+++ ac/arch/um/drivers/tuntap_user.c	Sat Nov  3 00:02:29 2001
@@ -43,8 +43,7 @@
 {
 	struct tuntap_open_data *data = arg;
 	char version_buf[sizeof("nnnnn\0")];
-	char fd_buf[sizeof("nnnnnn\0")];
-	char *args[] = { "uml_net", version_buf, "tuntap", "up", "", fd_buf,
+	char *args[] = { "uml_net", version_buf, "tuntap", "up", "",
 			 data->gate, NULL };
 	char buf[CMSG_SPACE(sizeof(data->data_fd))];
 	struct msghdr msg;
@@ -53,9 +52,9 @@
 	int pid, n;
 
 	sprintf(version_buf, "%d", UML_NET_VERSION);
-	sprintf(fd_buf, "%d", data->remote);
 	data->err = 0;
 	if((pid = fork()) == 0){
+		dup2(data->remote, 1);
 		close(data->me);
 		execvp(args[0], args);
 		printk("Exec of '%s' failed - errno = %d\n", args[0], errno);
@@ -107,22 +106,32 @@
 	char *dev;
 	char *what;
 	char *address;
+	char *output;
 };
 
 static void tuntap_change_tramp(void *arg)
 {
-	int pid;
+	int pid, fds[2];
 	struct tuntap_change_data *data = arg;
 	char version[sizeof("nnnnn\0")];
 	char *argv[] = { "uml_net", version, "tuntap", data->what, data->dev, 
 			 data->address, NULL };
 
 	sprintf(version, "%d", UML_NET_VERSION);
+	if(pipe(fds) < 0){
+		printk("tuntap_change_tramp - pipe failed, errno = %d\n",
+		       errno);
+		return;
+	}
 	if((pid = fork()) == 0){
+		dup2(fds[1], 1);
+		close(fds[0]);
 		execvp(argv[0], argv);
 		printk("Exec of '%s' failed - errno = %d\n", argv[0], errno);
 		exit(1);		
-	}	
+	}
+	close(fds[1]);
+	if(read_output(fds[0], &data->output)) data->output = NULL;
 	waitpid(pid, NULL, 0);
 }
 
@@ -135,7 +144,11 @@
 	data.what = what;
 	sprintf(addr_buf, "%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
 	data.address = addr_buf;
-	tracing_cb(tuntap_change_tramp, &data);	
+	tracing_cb(tuntap_change_tramp, &data);
+	if(data.output != NULL){
+		printk("%s", data.output);
+		kfree(data.output);
+	}
 }
 
 static void tuntap_open_addr(unsigned char *addr, void *arg)