diff --git a/src/tests/kits/net/new_stack/ethernet/ethernet.c b/src/tests/kits/net/new_stack/ethernet/ethernet.c
index c5b70f8895..19c016ccea 100644
--- a/src/tests/kits/net/new_stack/ethernet/ethernet.c
+++ b/src/tests/kits/net/new_stack/ethernet/ethernet.c
@@ -27,6 +27,7 @@ enum {
 typedef struct ethernet_interface {
 	ifnet_t ifnet;
 	int 	fd;
+	int		max_frame_size;
 } ethernet_interface;
 
 #define	ETHER_ADDR_LEN	6	/* Ethernet address length		*/
@@ -44,6 +45,7 @@ typedef struct        ether_addr {
 } ether_addr_t; 
 
 status_t	lookup_devices(char *root, void *cookie);
+status_t 	register_device(const char *path, void *cookie);
 status_t 	std_ops(int32 op, ...);
 
 struct net_interface_module_info nimi;
@@ -87,6 +89,7 @@ status_t send(ifnet_t *iface, net_data *data)
 	if (!data)
 		return B_ERROR;
 
+	// TODO!
 	return B_OK;
 }
 
@@ -128,7 +131,18 @@ status_t get_hardware_address(ifnet_t *iface, net_interface_hwaddr *hwaddr) { re
 status_t get_multicast_addresses(ifnet_t *iface, net_interface_hwaddr **hwaddr, int nb_addresses) { return -1; }
 status_t set_multicast_addresses(ifnet_t *iface, net_interface_hwaddr *hwaddr, int nb_addresses) { return -1; }
 	
-status_t set_mtu(ifnet_t *iface, uint32 mtu)  { return -1; }
+status_t set_mtu(ifnet_t *iface, uint32 mtu)
+{
+	ethernet_interface *ei = (ethernet_interface *) iface;
+
+	if (mtu > ei->max_frame_size)
+		// hardware constraint always win!
+		mtu = ei->max_frame_size;
+		
+	ei->ifnet.if_mtu = mtu;
+	return B_OK;
+}
+
 status_t set_promiscuous(ifnet_t *iface, bool enable) { return -1; }
 status_t set_media(ifnet_t *iface, uint32 media)  { return -1; }
 
@@ -141,7 +155,6 @@ status_t lookup_devices(char *root, void *cookie)
 	struct stat st;
 	char path[1024];
 	status_t status;
-	int fd;
 
 	dir = opendir(root);
 	if (!dir) {
@@ -165,76 +178,11 @@ status_t lookup_devices(char *root, void *cookie)
 		if (S_ISDIR(st.st_mode))
 			status = lookup_devices(path, cookie);
 		else if (S_ISCHR(st.st_mode)) {	// char device = driver!
-			ifnet_t *iface;
-			ethernet_interface *ei;
-			int frame_size;
-			ether_addr_t mac_address;
-	
 			if (strcmp(de->d_name, "stack") == 0 ||	// OBOS stack driver
 				strcmp(de->d_name, "api") == 0)		// BONE stack driver
 				continue;	// skip pseudo-entries
-		
-			fd = open(path, O_RDWR);
-			if (fd < B_OK) {
-				printf("ethernet: Unable to open(%s) -> %d [%s]. Skipping...\n", path,
-					fd, strerror(fd));
-				status = fd;
-				continue;
-			};
-			
-			// Init the network card
-			status = ioctl(fd, ETHER_INIT, NULL, 0);
-			if (status < B_OK) {
-				printf("ethernet: Failed to init %s: %ld [%s]. Skipping...\n", path,
-					status, strerror(status));
-				close(fd);
-				continue;
-			};
-			
-			// get the MAC address...
-			status = ioctl(fd, ETHER_GETADDR, &mac_address, 6);
-			if (status < B_OK) {
-				printf("ethernet: Failed to get %s MAC address: %ld [%s]. Skipping...\n",
-					path, status, strerror(status));
-				close(fd);
-				continue;
-			};
-			
-			
-			// Try to determine the MTU to use
-			status = ioctl(fd, ETHER_GETFRAMESIZE, &frame_size, sizeof(frame_size));
-			if (status < B_OK) {
-				frame_size = ETHERMTU;
-				printf("ethernet: %s device don't support IF_GETFRAMESIZE; defaulting to %d\n",
-				       path, frame_size);
-			};
 
-			printf("ethernet: interface '%s':\n"
-						"\tMAC address: %02x:%02x:%02x:%02x:%02x:%02x\n"
-						"\tMTU:         %d bytes\n",
-					path,
-					mac_address.byte[0], mac_address.byte[1],
-					mac_address.byte[2], mac_address.byte[3],
-					mac_address.byte[4], mac_address.byte[5], frame_size);
-			
-
-
-			ei = (ethernet_interface *) malloc(sizeof(*ei));
-			if (!ei)
-				break;		
-
-			ei->fd = fd;
-
-			iface = &ei->ifnet;
-
-			iface->if_name 	= strdup(path);
-			iface->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
-			iface->if_type 	= 0x20;
-			iface->if_mtu 	= frame_size;
-			
-			iface->module = &nimi;
-			
-			status = g_stack->register_interface(iface);
+			status = register_device(path, cookie);
 		};
 	};
 	
@@ -243,6 +191,78 @@ status_t lookup_devices(char *root, void *cookie)
 	return status;
 }
 
+
+status_t register_device(const char *path, void *cookie)
+{
+	ifnet_t *iface;
+	ethernet_interface *ei;
+	int frame_size;
+	ether_addr_t mac_address;
+	int fd;
+	status_t status;
+	
+	fd = open(path, O_RDWR);
+	if (fd < B_OK) {
+		printf("ethernet: Unable to open(%s) -> %d [%s]. Skipping...\n", path,
+			fd, strerror(fd));
+		return fd;
+	};
+				
+	// Init the network card
+	status = ioctl(fd, ETHER_INIT, NULL, 0);
+	if (status < B_OK) {
+		printf("ethernet: Failed to init %s: %ld [%s]. Skipping...\n", path,
+				status, strerror(status));
+		close(fd);
+		return status;
+	};
+			
+	// get the MAC address...
+	status = ioctl(fd, ETHER_GETADDR, &mac_address, 6);
+	if (status < B_OK) {
+		printf("ethernet: Failed to get %s MAC address: %ld [%s]. Skipping...\n",
+			path, status, strerror(status));
+		close(fd);
+		return status;
+	};
+			
+	// Try to determine the MTU to use
+	status = ioctl(fd, ETHER_GETFRAMESIZE, &frame_size, sizeof(frame_size));
+	if (status < B_OK) {
+		frame_size = ETHERMTU;
+		printf("ethernet: %s device don't support IF_GETFRAMESIZE; defaulting to %d\n",
+		       path, frame_size);
+	};
+
+	printf("ethernet: interface '%s':\n"
+				"\tMAC address: %02x:%02x:%02x:%02x:%02x:%02x\n"
+				"\tMTU:         %d bytes\n",
+			path,
+			mac_address.byte[0], mac_address.byte[1],
+			mac_address.byte[2], mac_address.byte[3],
+			mac_address.byte[4], mac_address.byte[5], frame_size);
+
+	ei = (ethernet_interface *) malloc(sizeof(*ei));
+	if (!ei) {
+		close(fd);
+		return B_NO_MEMORY;
+	};
+
+	ei->fd = fd;
+	ei->max_frame_size = frame_size;
+
+	iface = &ei->ifnet;
+
+	iface->if_name 	= strdup(path);
+	iface->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
+	iface->if_type 	= 0x20; // IFT_ETHER;
+	iface->if_mtu 	= frame_size;
+			
+	iface->module = &nimi;
+			
+	return g_stack->register_interface(iface);
+}
+
 // #pragma mark -
 
 status_t std_ops(int32 op, ...)