diff --git a/libnozzle/tests/nozzle_test.c b/libnozzle/tests/nozzle_test.c
index 0f5ba31a..2800f48b 100644
--- a/libnozzle/tests/nozzle_test.c
+++ b/libnozzle/tests/nozzle_test.c
@@ -1,1355 +1,1353 @@
 /*
  * Copyright (C) 2010-2017 Red Hat, Inc.  All rights reserved.
  *
  * Author: Fabio M. Di Nitto <fabbione@kronosnet.org>
  *
  * This software licensed under GPL-2.0+, LGPL-2.0+
  */
 
 #include "config.h"
 
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <errno.h>
 #include <ifaddrs.h>
 #include <stdint.h>
 #include <limits.h>
 #include <sys/socket.h>
 #include <net/ethernet.h>
 
 #ifdef KNET_LINUX
 #include <linux/if_tun.h>
 #include <netinet/ether.h>
 #endif
 #ifdef KNET_BSD
 #include <net/if_dl.h>
 #endif
 
 #include "libnozzle.h"
 #include "internals.h"
 
 char testipv4_1[1024];
 char testipv4_2[1024];
 char testipv6_1[1024];
 char testipv6_2[1024];
 /*
  * use this one to randomize knet interface name
  * for named creation test
  */
 uint8_t randombyte = 0;
 
 static int is_if_in_system(char *name)
 {
 	struct ifaddrs *ifap = NULL;
 	struct ifaddrs *ifa;
 	int found = 0;
 
 	if (getifaddrs(&ifap) < 0) {
 		printf("Unable to get interface list.\n");
 		return -1;
 	}
 
 	ifa = ifap;
 
 	while (ifa) {
 		if (!strncmp(name, ifa->ifa_name, IFNAMSIZ)) {
 			found = 1;
 			break;
 		}
 		ifa=ifa->ifa_next;
 	}
 
 	freeifaddrs(ifap);
 	return found;
 }
 
 static int test_iface(char *name, size_t size, const char *updownpath)
 {
 	nozzle_t nozzle;
 
 	nozzle=nozzle_open(name, size, updownpath);
 	if (!nozzle) {
 		printf("Unable to open knet.\n");
 		return -1;
 	}
 	printf("Created interface: %s\n", name);
 
 	if (is_if_in_system(name) > 0) {
 		printf("Found interface %s on the system\n", name);
 	} else {
 		printf("Unable to find interface %s on the system\n", name);
 	}
 
 	if (!nozzle_get_handle_by_name(name)) {
 		printf("Unable to find interface %s in nozzle db\n", name);
 	} else {
 		printf("Found interface %s in nozzle db\n", name);
 	}
 
 	nozzle_close(nozzle);
 
 	if (is_if_in_system(name) == 0)
 		printf("Successfully removed interface %s from the system\n", name);
 
 	return 0;
 }
 
 static int check_nozzle_open_close(void)
 {
 	char device_name[2*IFNAMSIZ];
 	char fakepath[PATH_MAX];
 	size_t size = IFNAMSIZ;
 
 	memset(device_name, 0, sizeof(device_name));
 
 	printf("Creating random nozzle interface:\n");
 	if (test_iface(device_name, size,  NULL) < 0) {
 		printf("Unable to create random interface\n");
 		return -1;
 	}
 
 #ifdef KNET_LINUX
 	printf("Creating kronostest%u nozzle interface:\n", randombyte);
 	snprintf(device_name, IFNAMSIZ, "kronostest%u", randombyte);
 	if (test_iface(device_name, size, NULL) < 0) {
 		printf("Unable to create kronostest%u interface\n", randombyte);
 		return -1;
 	}
 #endif
 #ifdef KNET_BSD
 	printf("Creating tap%u nozzle interface:\n", randombyte);
 	snprintf(device_name, IFNAMSIZ, "tap%u", randombyte);
 	if (test_iface(device_name, size, NULL) < 0) {
 		printf("Unable to create tap%u interface\n", randombyte);
 		return -1;
 	}
 
 	printf("Creating kronostest%u nozzle interface:\n", randombyte);
 	snprintf(device_name, IFNAMSIZ, "kronostest%u", randombyte);
 	if (test_iface(device_name, size, NULL) == 0) {
 		printf("BSD should not accept kronostest%u interface\n", randombyte);
 		return -1;
 	}
 #endif
 
 	printf("Testing ERROR conditions\n");
 
 	printf("Testing dev == NULL\n");
 	errno=0;
 	if ((test_iface(NULL, size, NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_open sanity checks\n");
 		return -1;
 	}
 
 	printf("Testing size < IFNAMSIZ\n");
 	errno=0;
 	if ((test_iface(device_name, 1, NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_open sanity checks\n");
 		return -1;
 	}
 
 	printf("Testing device_name size > IFNAMSIZ\n");
 	errno=0;
 	strcpy(device_name, "abcdefghilmnopqrstuvwz");
 	if ((test_iface(device_name, IFNAMSIZ, NULL) >= 0) || (errno != E2BIG)) {
 		printf("Something is wrong in nozzle_open sanity checks\n");
 		return -1;
 	}
 
 	printf("Testing updown path != abs\n");
 	errno=0;
 
 	memset(device_name, 0, IFNAMSIZ);
 	if ((test_iface(device_name, IFNAMSIZ, "foo")  >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_open sanity checks\n");
 		return -1;
 	}
 
 	memset(fakepath, 0, PATH_MAX);
 	memset(fakepath, '/', PATH_MAX - 2);
 
 	printf("Testing updown path > PATH_MAX\n");
 	errno=0;
 
 	memset(device_name, 0, IFNAMSIZ);
 	if ((test_iface(device_name, IFNAMSIZ, fakepath)  >= 0) || (errno != E2BIG)) {
 		printf("Something is wrong in nozzle_open sanity checks\n");
 		return -1;
 	}
 
 	return 0;
 }
 
 static int check_knet_multi_eth(void)
 {
 	char device_name1[IFNAMSIZ];
 	char device_name2[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	int err=0;
 	nozzle_t nozzle1 = NULL;
 	nozzle_t nozzle2 = NULL;
 
 	printf("Testing multiple knet interface instances\n");
 
 	memset(device_name1, 0, size);
 	memset(device_name2, 0, size);
 
 	nozzle1 = nozzle_open(device_name1, size, NULL);
 	if (!nozzle1) {
 		printf("Unable to init %s\n", device_name1);
 		err = -1;
 		goto out_clean;
 	}
 
 	if (is_if_in_system(device_name1) > 0) {
 		printf("Found interface %s on the system\n", device_name1);
 	} else {
 		printf("Unable to find interface %s on the system\n", device_name1);
 	}
 
 	nozzle2 = nozzle_open(device_name2, size, NULL);
 	if (!nozzle2) {
 		printf("Unable to init %s\n", device_name2);
 		err = -1;
 		goto out_clean;
 	}
 
 	if (is_if_in_system(device_name2) > 0) {
 		printf("Found interface %s on the system\n", device_name2);
 	} else {
 		printf("Unable to find interface %s on the system\n", device_name2);
 	}
 
 	if (nozzle1) {
 		nozzle_close(nozzle1);
 	}
 
 	if (nozzle2) {
 		nozzle_close(nozzle2);
 	}
 
 	printf("Testing error conditions\n");
 
 	printf("Open same device twice\n");
 
 	memset(device_name1, 0, size);
 
 	nozzle1 = nozzle_open(device_name1, size, NULL);
 	if (!nozzle1) {
 		printf("Unable to init %s\n", device_name1);
 		err = -1;
 		goto out_clean;
 	}
 
 	if (is_if_in_system(device_name1) > 0) {
 		printf("Found interface %s on the system\n", device_name1);
 	} else {
 		printf("Unable to find interface %s on the system\n", device_name1);
 	}
 
 	nozzle2 = nozzle_open(device_name1, size, NULL);
 	if (nozzle2) {
 		printf("We were able to init 2 interfaces with the same name!\n");
 		err = -1;
 		goto out_clean;
 	}
 
 out_clean:
 	if (nozzle1) {
 		nozzle_close(nozzle1);
 	}
 
 	if (nozzle2) {
 		nozzle_close(nozzle2);
 	}
 
 	return err;
 }
 
 static int check_knet_mtu(void)
 {
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	int err=0;
 	nozzle_t nozzle;
 	char *error_string = NULL;
 
 	int current_mtu = 0;
 	int expected_mtu = 1500;
 
 	printf("Testing get/set MTU\n");
 
 	memset(device_name, 0, size);
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Comparing default MTU\n");
 	current_mtu = nozzle_get_mtu(nozzle);
 	if (current_mtu < 0) {
 		printf("Unable to get MTU\n");
 		err = -1;
 		goto out_clean;
 	}
 	if (current_mtu != expected_mtu) {
 		printf("current mtu [%d] does not match expected default [%d]\n", current_mtu, expected_mtu);
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Setting MTU to 9000\n");
 	expected_mtu = 9000;
 	if (nozzle_set_mtu(nozzle, expected_mtu, &error_string) < 0) {
 		printf("Unable to set MTU to %d\n", expected_mtu);
 		if (error_string) {
 			printf("error: %s\n", error_string);
 			free(error_string);
 		}
 		err = -1;
 		goto out_clean;
 	}
 
 	current_mtu = nozzle_get_mtu(nozzle);
 	if (current_mtu < 0) {
 		printf("Unable to get MTU\n");
 		err = -1;
 		goto out_clean;
 	}
 	if (current_mtu != expected_mtu) {
 		printf("current mtu [%d] does not match expected value [%d]\n", current_mtu, expected_mtu);
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Testing ERROR conditions\n");
 
 	printf("Passing empty struct to get_mtu\n");
 	if (nozzle_get_mtu(NULL) > 0) {
 		printf("Something is wrong in nozzle_get_mtu sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Passing empty struct to set_mtu\n");
 	if (nozzle_set_mtu(NULL, 1500, &error_string) == 0) {
 		printf("Something is wrong in nozzle_set_mtu sanity checks\n");
 		if (error_string) {
 			printf("error: %s\n", error_string);
 			free(error_string);
 		}
 		err = -1;
 		goto out_clean;
 	}
 
 out_clean:
 	if (nozzle) {
 		nozzle_close(nozzle);
 	}
 
 	return err;
 }
 
 static int check_knet_mtu_ipv6(void)
 {
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	char verifycmd[1024];
 	int err=0;
 	nozzle_t nozzle;
 	char *error_string = NULL;
 
 	printf("Testing get/set MTU with IPv6 address\n");
 
 	memset(device_name, 0, size);
 
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Adding ip: %s/64\n", testipv6_1);
 
 	err = nozzle_add_ip(nozzle, testipv6_1, "64", &error_string);
 	if (error_string) {
 		printf("add ipv6 output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to assign IP address\n");
 		err=-1;
-		sleep(30);
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Setting MTU to 1200\n");
 	if (nozzle_set_mtu(nozzle, 1200, &error_string) < 0) {
 		printf("Unable to set MTU to 1200\n");
 		if (error_string) {
 			printf("error: %s\n", error_string);
 			free(error_string);
 		}
 		err = -1;
 		goto out_clean;
 	}
 
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 #ifdef KNET_LINUX
 	if (!err) {
 #endif
 #ifdef KNET_BSD
 	if (err) {
 #endif
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Adding ip: %s/64\n", testipv6_2);
 	err = nozzle_add_ip(nozzle, testipv6_2, "64", &error_string);
 	if (error_string) {
 		printf("add ipv6 output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_2);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_2);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Restoring MTU to default\n");
 	if (nozzle_reset_mtu(nozzle, &error_string) < 0) {
 		printf("Unable to reset mtu\n");
 		if (error_string) {
 			printf("error: %s\n", error_string);
 			free(error_string);
 		}
 		err = -1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_2);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_2);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 out_clean:
 	if (nozzle) {
 		nozzle_close(nozzle);
 	}
 
 	return err;
 }
 
 static int check_knet_mac(void)
 {
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	int err=0;
 	nozzle_t nozzle;
 	char *current_mac = NULL, *temp_mac = NULL, *err_mac = NULL;
 	struct ether_addr *cur_mac, *tmp_mac;
 
 	printf("Testing get/set MAC\n");
 
 	memset(device_name, 0, size);
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Get current MAC\n");
 
 	if (nozzle_get_mac(nozzle, &current_mac) < 0) {
 		printf("Unable to get current MAC address.\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Current MAC: %s\n", current_mac);
 
 	printf("Setting MAC: 00:01:01:01:01:01\n");
 
 	if (nozzle_set_mac(nozzle, "00:01:01:01:01:01") < 0) {
 		printf("Unable to set current MAC address.\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	if (nozzle_get_mac(nozzle, &temp_mac) < 0) {
 		printf("Unable to get current MAC address.\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Current MAC: %s\n", temp_mac);
 
 	cur_mac = ether_aton(current_mac);
 	tmp_mac = ether_aton(temp_mac);
 
 	printf("Comparing MAC addresses\n");
 	if (memcmp(cur_mac, tmp_mac, sizeof(struct ether_addr))) {
 		printf("Mac addresses are not the same?!\n");
 		err = -1;
-		sleep(20);
 		goto out_clean;
 	}
 
 	printf("Testing ERROR conditions\n");
 
 	printf("Pass NULL to get_mac (pass1)\n");
 	errno = 0;
 	if ((nozzle_get_mac(NULL, &err_mac) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_get_mac sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Pass NULL to get_mac (pass2)\n");
 	errno = 0;
 	if ((nozzle_get_mac(nozzle, NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_get_mac sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Pass NULL to set_mac (pass1)\n");
 	errno = 0;
 	if ((nozzle_set_mac(nozzle, NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_set_mac sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Pass NULL to set_mac (pass2)\n");
 	errno = 0;
 	if ((nozzle_set_mac(NULL, err_mac) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_set_mac sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 out_clean:
 	if (err_mac) {
 		printf("Something managed to set err_mac!\n");
 		err = -1;
 		free(err_mac);
 	}
 
 	if (current_mac)
 		free(current_mac);
 	if (temp_mac)
 		free(temp_mac);
 
 	if (nozzle) {
 		nozzle_close(nozzle);
 	}
 
 	return err;
 }
 
 static int check_nozzle_execute_bin_sh_command(void)
 {
 	int err = 0;
 	char command[4096];
 	char *error_string = NULL;
 
 	memset(command, 0, sizeof(command));
 
 	printf("Testing execute_bin_sh_command\n");
 
 	printf("command true\n");
 
 	err = execute_bin_sh_command("true", &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to execute true ?!?!\n");
 		goto out_clean;
 	}
 
 	printf("Testing ERROR conditions\n");
 
 	printf("command false\n");
 
 	err = execute_bin_sh_command("false", &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Can we really execute false successfully?!?!\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("command that outputs to stdout (enforcing redirect)\n");
 
 	err = execute_bin_sh_command("grep -h 2>&1", &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Can we really execute grep -h successfully?!?\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("command that outputs to stderr\n");
 	err = execute_bin_sh_command("grep -h", &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Can we really execute grep -h successfully?!?\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("empty command\n");
 	err = execute_bin_sh_command(NULL, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Can we really execute (nil) successfully?!?!\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("empty error\n");
 	err = execute_bin_sh_command("true", NULL);
 	if (!err) {
 		printf("Check EINVAL filter for no error_string!\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	err = 0;
 
 out_clean:
 
 	return err;
 }
 
 static int check_knet_up_down(void)
 {
 	char verifycmd[1024];
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	int err=0;
 	nozzle_t nozzle;
 	char *error_string = NULL;
 
 	printf("Testing interface up/down\n");
 
 	memset(device_name, 0, size);
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Put the interface up\n");
 
 	err = nozzle_set_up(nozzle);
 	if (err < 0) {
 		printf("Unable to set interface up\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q UP", nozzle->name);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q UP", nozzle->name);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to verify inteface UP\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Put the interface down\n");
 
 	err = nozzle_set_down(nozzle);
 	if (err < 0) {
 		printf("Unable to put the interface down\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q UP", nozzle->name);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q UP", nozzle->name);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Unable to verify inteface DOWN\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	nozzle_close(nozzle);
 
 	printf("Testing interface pre-up/up/down/post-down (exec errors)\n");
 
 	memset(device_name, 0, size);
 	nozzle = nozzle_open(device_name, size, ABSBUILDDIR "/nozzle_updown_bad");
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Put the interface up\n");
 
 	err = nozzle_run_updown(nozzle, NOZZLE_PREUP, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_PREUP error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("preup output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	err = nozzle_set_up(nozzle);
 	if (err < 0) {
 		printf("Unable to put the interface up\n");
 		err = -1;
 		goto out_clean;
 	}
 	err = nozzle_run_updown(nozzle, NOZZLE_UP, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_UP error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("up output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 
 	printf("Put the interface down\n");
 
 	err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_DOWN error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("down output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	err = nozzle_set_down(nozzle);
 	if (err < 0) {
 		printf("Unable to put the interface down\n");
 		err = -1;
 		goto out_clean;
 	}
 	err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_POSTDOWN error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("postdown output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 
 	nozzle_close(nozzle);
 
 	printf("Testing interface pre-up/up/down/post-down\n");
 
 	memset(device_name, 0, size);
 
 	nozzle = nozzle_open(device_name, size, ABSBUILDDIR "/nozzle_updown_good");
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Put the interface up\n");
 
 	err = nozzle_run_updown(nozzle, NOZZLE_PREUP, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_PREUP error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("preup output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	err = nozzle_set_up(nozzle);
 	if (err < 0) {
 		printf("Unable to put the interface up\n");
 		err = -1;
 		goto out_clean;
 	}
 	err = nozzle_run_updown(nozzle, NOZZLE_UP, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_UP error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("up output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 
 	printf("Put the interface down\n");
 
 	err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_DOWN error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("down output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	err = nozzle_set_down(nozzle);
 	if (err < 0) {
 		printf("Unable to put the interface down\n");
 		err = -1;
 		goto out_clean;
 	}
 	err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_string);
 	if (err) {
 		printf("nozzle_run_updown NOZZLE_POSTDOWN error: %s\n", strerror(errno));
 	}
 	if (error_string) {
 		printf("postdown output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 
 	nozzle_close(nozzle);
 
 	printf("Test ERROR conditions\n");
 
 	printf("Pass NULL to nozzle set_up\n");
 	err = 0;
 	errno = 0;
 	if ((nozzle_set_up(NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_set_up sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 	printf("Pass NULL to nozzle set_down\n");
 	errno = 0;
 	if ((nozzle_set_down(NULL) >= 0) || (errno != EINVAL)) {
 		printf("Something is wrong in nozzle_set_down sanity checks\n");
 		err = -1;
 		goto out_clean;
 	}
 
 out_clean:
 	nozzle_close(nozzle);
 
 	return err;
 }
 
 static int check_knet_close_leak(void)
 {
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	int err=0;
 	nozzle_t nozzle;
 	char *error_string = NULL;
 
 	printf("Testing close leak (needs valgrind)\n");
 
 	memset(device_name, 0, size);
 
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Adding ip: %s/24\n", testipv4_1);
 
 	err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string);
 	if (error_string) {
 		printf("add ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Adding ip: %s/24\n", testipv4_2);
 
 	err = nozzle_add_ip(nozzle, testipv4_2, "24", &error_string);
 	if (error_string) {
 		printf("add ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 out_clean:
 	nozzle_close(nozzle);
 
 	return err;
 }
 
 static int check_knet_set_del_ip(void)
 {
 	char device_name[IFNAMSIZ];
 	size_t size = IFNAMSIZ;
 	char verifycmd[1024];
 	int err=0;
 	nozzle_t nozzle;
 	char *ip_list = NULL;
 	int ip_list_entries = 0, i, offset = 0;
 	char *error_string = NULL;
 
 	printf("Testing interface add/remove ip\n");
 
 	memset(device_name, 0, size);
 
 	nozzle = nozzle_open(device_name, size, NULL);
 	if (!nozzle) {
 		printf("Unable to init %s\n", device_name);
 		return -1;
 	}
 
 	printf("Adding ip: %s/24\n", testipv4_1);
 
 	err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string);
 	if (error_string) {
 		printf("add ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Adding ip: %s/24\n", testipv4_2);
 
 	err = nozzle_add_ip(nozzle, testipv4_2, "24", &error_string);
 	if (error_string) {
 		printf("add ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Adding duplicate ip: %s/24\n", testipv4_1);
 
 	err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string);
 	if (error_string) {
 		printf("add ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to find IP address in libnozzle db\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Checking ip: %s/24\n", testipv4_1);
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv4_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Get ip list from libnozzle:\n");
 
 	if (nozzle_get_ips(nozzle, &ip_list, &ip_list_entries) < 0) {
 		printf("Not enough mem?\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	if (ip_list_entries != 2) {
 		printf("Didn't get enough ip back from libnozzle?\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	for (i = 1; i <= ip_list_entries; i++) {
 		printf("Found IP %s %s in libnozzle db\n", ip_list + offset, ip_list + offset + strlen(ip_list + offset) + 1);
 		offset = offset + strlen(ip_list) + 1;
 		offset = offset + strlen(ip_list + offset) + 1;
 	}
 
 	free(ip_list);
 
 	printf("Deleting ip: %s/24\n", testipv4_1);
 
 	err = nozzle_del_ip(nozzle, testipv4_1, "24", &error_string);
 	if (error_string) {
 		printf("del ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to delete IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Deleting ip: %s/24\n", testipv4_2);
 
 	err = nozzle_del_ip(nozzle, testipv4_2, "24", &error_string);
 	if (error_string) {
 		printf("del ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to delete IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Deleting again ip: %s/24\n", testipv4_1);
 
 	err = nozzle_del_ip(nozzle, testipv4_1, "24", &error_string);
 	if (error_string) {
 		printf("del ip output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to delete IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv4_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Adding ip: %s/64\n", testipv6_1);
 
 	err = nozzle_add_ip(nozzle, testipv6_1, "64", &error_string);
 	if (error_string) {
 		printf("add ipv6 output: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err < 0) {
 		printf("Unable to assign IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	printf("Deleting ip: %s/64\n", testipv6_1);
 
 	err = nozzle_del_ip(nozzle, testipv6_1, "64", &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (err) {
 		printf("Unable to delete IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 	memset(verifycmd, 0, sizeof(verifycmd));
 	snprintf(verifycmd, sizeof(verifycmd)-1,
 #ifdef KNET_LINUX
 		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
 #endif
 #ifdef KNET_BSD
 		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
 #endif
 	err = execute_bin_sh_command(verifycmd, &error_string);
 	if (error_string) {
 		printf("Error string: %s\n", error_string);
 		free(error_string);
 		error_string = NULL;
 	}
 	if (!err) {
 		printf("Unable to verify IP address\n");
 		err=-1;
 		goto out_clean;
 	}
 
 out_clean:
 	nozzle_close(nozzle);
 
 	return err;
 }
 
 static void make_local_ips(void)
 {
 	pid_t mypid;
 	uint8_t *pid;
 	uint8_t i;
 
 	if (sizeof(pid_t) < 4) {
 		printf("pid_t is smaller than 4 bytes?\n");
 		exit(77);
 	}
 
 	memset(testipv4_1, 0, sizeof(testipv4_1));
 	memset(testipv4_2, 0, sizeof(testipv4_2));
 	memset(testipv6_1, 0, sizeof(testipv6_1));
 	memset(testipv6_2, 0, sizeof(testipv6_2));
 
 	mypid = getpid();
 	pid = (uint8_t *)&mypid;
 
 	for (i = 0; i < sizeof(pid_t); i++) {
 		if (pid[i] == 0) {
 			pid[i] = 128;
 		}
 	}
 
 	randombyte = pid[1];
 
 	snprintf(testipv4_1,
 		 sizeof(testipv4_1) - 1,
 		 "127.%u.%u.%u",
 		 pid[1],
 		 pid[2],
 		 pid[0]);
 
 	snprintf(testipv4_2,
 		 sizeof(testipv4_2) - 1,
 		 "127.%u.%d.%u",
 		 pid[1],
 		 pid[2]+1,
 		 pid[0]);
 
 	snprintf(testipv6_1,
 		 sizeof(testipv6_1) - 1,
 		 "fd%x:%x%x::1",
 		 pid[1],
 		 pid[2],
 		 pid[0]);
 
 	snprintf(testipv6_2,
 		 sizeof(testipv6_2) - 1,
 		 "fd%x:%x%x:1::1",
 		 pid[1],
 		 pid[2],
 		 pid[0]);
 }
 
 int main(void)
 {
 	if (geteuid() != 0) {
 		printf("This test requires root privileges\n");
 		exit(77);
 	}
 
 	make_local_ips();
 
 	if (check_nozzle_open_close() < 0)
 		return -1;
 
 	if (check_knet_multi_eth() < 0)
 		return -1;
 
 	if (check_knet_mtu() < 0)
 		return -1;
 
 	if (check_knet_mtu_ipv6() < 0)
 		return -1;
 
 	if (check_knet_mac() < 0)
 		return -1;
 
 	if (check_nozzle_execute_bin_sh_command() < 0)
 		return -1;
 
 	if (check_knet_up_down() < 0)
 		return -1;
 
 	if (check_knet_set_del_ip() < 0)
 		return -1;
 
 	if (check_knet_close_leak() < 0)
 		return -1;
 
 	return 0;
 }