// https://syzkaller.appspot.com/bug?id=912f70e859dfffd2533b7cfcd2c71e0dd6f71e9d
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/if_arp.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/uio.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <stdint.h>
#include <string.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static void vsnprintf_check(char* str, size_t size, const char* format,
                            va_list args)
{
  int rv;

  rv = vsnprintf(str, size, format, args);
  if (rv < 0)
    fail("tun: snprintf failed");
  if ((size_t)rv >= size)
    fail("tun: string '%s...' doesn't fit into buffer", str);
}

static void snprintf_check(char* str, size_t size, const char* format, ...)
{
  va_list args;

  va_start(args, format);
  vsnprintf_check(str, size, format, args);
  va_end(args);
}

#define COMMAND_MAX_LEN 128
#define PATH_PREFIX                                                            \
  "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin "
#define PATH_PREFIX_LEN (sizeof(PATH_PREFIX) - 1)

static void execute_command(bool panic, const char* format, ...)
{
  va_list args;
  char command[PATH_PREFIX_LEN + COMMAND_MAX_LEN];
  int rv;

  va_start(args, format);
  memcpy(command, PATH_PREFIX, PATH_PREFIX_LEN);
  vsnprintf_check(command + PATH_PREFIX_LEN, COMMAND_MAX_LEN, format, args);
  rv = system(command);
  if (panic && rv != 0)
    fail("tun: command \"%s\" failed with code %d", &command[0], rv);

  va_end(args);
}

static int tunfd = -1;
static int tun_frags_enabled;

#define SYZ_TUN_MAX_PACKET_SIZE 1000

#define MAX_PIDS 32
#define ADDR_MAX_LEN 32

#define LOCAL_MAC "aa:aa:aa:aa:%02hx:aa"
#define REMOTE_MAC "aa:aa:aa:aa:%02hx:bb"

#define LOCAL_IPV4 "172.20.%d.170"
#define REMOTE_IPV4 "172.20.%d.187"

#define LOCAL_IPV6 "fe80::%02hx:aa"
#define REMOTE_IPV6 "fe80::%02hx:bb"

#define IFF_NAPI 0x0010
#define IFF_NAPI_FRAGS 0x0020

static void initialize_tun(int id)
{
  if (id >= MAX_PIDS)
    fail("tun: no more than %d executors", MAX_PIDS);

  tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
  if (tunfd == -1) {
    printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n");
    printf("otherwise fuzzing or reproducing might not work as intended\n");
    return;
  }

  char iface[IFNAMSIZ];
  snprintf_check(iface, sizeof(iface), "syz%d", id);

  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, iface, IFNAMSIZ);
  ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
    if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0)
      fail("tun: ioctl(TUNSETIFF) failed");
  }
  if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0)
    fail("tun: ioctl(TUNGETIFF) failed");
  tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0;

  char local_mac[ADDR_MAX_LEN];
  snprintf_check(local_mac, sizeof(local_mac), LOCAL_MAC, id);
  char remote_mac[ADDR_MAX_LEN];
  snprintf_check(remote_mac, sizeof(remote_mac), REMOTE_MAC, id);

  char local_ipv4[ADDR_MAX_LEN];
  snprintf_check(local_ipv4, sizeof(local_ipv4), LOCAL_IPV4, id);
  char remote_ipv4[ADDR_MAX_LEN];
  snprintf_check(remote_ipv4, sizeof(remote_ipv4), REMOTE_IPV4, id);

  char local_ipv6[ADDR_MAX_LEN];
  snprintf_check(local_ipv6, sizeof(local_ipv6), LOCAL_IPV6, id);
  char remote_ipv6[ADDR_MAX_LEN];
  snprintf_check(remote_ipv6, sizeof(remote_ipv6), REMOTE_IPV6, id);

  execute_command(1, "sysctl -w net.ipv6.conf.%s.accept_dad=0", iface);

  execute_command(1, "sysctl -w net.ipv6.conf.%s.router_solicitations=0",
                  iface);

  execute_command(1, "ip link set dev %s address %s", iface, local_mac);
  execute_command(1, "ip addr add %s/24 dev %s", local_ipv4, iface);
  execute_command(1, "ip -6 addr add %s/120 dev %s", local_ipv6, iface);
  execute_command(1, "ip neigh add %s lladdr %s dev %s nud permanent",
                  remote_ipv4, remote_mac, iface);
  execute_command(1, "ip -6 neigh add %s lladdr %s dev %s nud permanent",
                  remote_ipv6, remote_mac, iface);
  execute_command(1, "ip link set dev %s up", iface);
}

#define DEV_IPV4 "172.20.%d.%d"
#define DEV_IPV6 "fe80::%02hx:%02hx"
#define DEV_MAC "aa:aa:aa:aa:%02hx:%02hx"

static void initialize_netdevices(int id)
{
  unsigned i;
  const char* devtypes[] = {"ip6gretap", "bridge", "vcan"};
  const char* devnames[] = {"lo",       "sit0",    "bridge0", "vcan0",
                            "tunl0",    "gre0",    "gretap0", "ip_vti0",
                            "ip6_vti0", "ip6tnl0", "ip6gre0", "ip6gretap0",
                            "erspan0"};

  for (i = 0; i < sizeof(devtypes) / (sizeof(devtypes[0])); i++)
    execute_command(0, "ip link add dev %s0 type %s", devtypes[i], devtypes[i]);
  for (i = 0; i < sizeof(devnames) / (sizeof(devnames[0])); i++) {
    char addr[ADDR_MAX_LEN];
    snprintf_check(addr, sizeof(addr), DEV_IPV4, id, id + 10);
    execute_command(0, "ip -4 addr add %s/24 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_IPV6, id, id + 10);
    execute_command(0, "ip -6 addr add %s/120 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_MAC, id, id + 10);
    execute_command(0, "ip link set dev %s address %s", devnames[i], addr);
    execute_command(0, "ip link set dev %s up", devnames[i]);
  }
}

static void setup_tun(uint64_t pid, bool enable_tun)
{
  if (enable_tun) {
    initialize_tun(pid);
    initialize_netdevices(pid);
  }
}

long r[2];
void loop()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  r[0] = syscall(__NR_socket, 2, 6, 0);
  syscall(__NR_setsockopt, r[0], 0, 0x2f, 0x208e8000, 0);
  r[1] = syscall(__NR_socket, 2, 0x803, 2);
  memcpy((void*)0x20002000, "\x6e\x61\x74\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00",
         32);
  *(uint32_t*)0x20002020 = 0x1b;
  *(uint32_t*)0x20002024 = 4;
  *(uint32_t*)0x20002028 = 0x2a0;
  *(uint32_t*)0x2000202c = 0;
  *(uint32_t*)0x20002030 = 0;
  *(uint32_t*)0x20002034 = -1;
  *(uint32_t*)0x20002038 = 0;
  *(uint32_t*)0x2000203c = 0;
  *(uint32_t*)0x20002040 = 0;
  *(uint32_t*)0x20002044 = 0;
  *(uint32_t*)0x20002048 = -1;
  *(uint32_t*)0x2000204c = 0;
  *(uint32_t*)0x20002050 = 0;
  *(uint32_t*)0x20002054 = 4;
  *(uint64_t*)0x20002058 = 0x20003000;
  *(uint8_t*)0x20002060 = 0;
  *(uint8_t*)0x20002061 = 0;
  *(uint8_t*)0x20002062 = 0;
  *(uint8_t*)0x20002063 = 0;
  *(uint8_t*)0x20002064 = 0;
  *(uint8_t*)0x20002065 = 0;
  *(uint8_t*)0x20002066 = 0;
  *(uint8_t*)0x20002067 = 0;
  *(uint8_t*)0x20002068 = 0;
  *(uint8_t*)0x20002069 = 0;
  *(uint8_t*)0x2000206a = 0;
  *(uint8_t*)0x2000206b = 0;
  *(uint8_t*)0x2000206c = 0;
  *(uint8_t*)0x2000206d = 0;
  *(uint8_t*)0x2000206e = 0;
  *(uint8_t*)0x2000206f = 0;
  *(uint8_t*)0x20002070 = 0;
  *(uint8_t*)0x20002071 = 0;
  *(uint8_t*)0x20002072 = 0;
  *(uint8_t*)0x20002073 = 0;
  *(uint8_t*)0x20002074 = 0;
  *(uint8_t*)0x20002075 = 0;
  *(uint8_t*)0x20002076 = 0;
  *(uint8_t*)0x20002077 = 0;
  *(uint8_t*)0x20002078 = 0;
  *(uint8_t*)0x20002079 = 0;
  *(uint8_t*)0x2000207a = 0;
  *(uint8_t*)0x2000207b = 0;
  *(uint8_t*)0x2000207c = 0;
  *(uint8_t*)0x2000207d = 0;
  *(uint8_t*)0x2000207e = 0;
  *(uint8_t*)0x2000207f = 0;
  *(uint8_t*)0x20002080 = 0;
  *(uint8_t*)0x20002081 = 0;
  *(uint8_t*)0x20002082 = 0;
  *(uint8_t*)0x20002083 = 0;
  *(uint8_t*)0x20002084 = 0;
  *(uint8_t*)0x20002085 = 0;
  *(uint8_t*)0x20002086 = 0;
  *(uint8_t*)0x20002087 = 0;
  *(uint8_t*)0x20002088 = 0;
  *(uint8_t*)0x20002089 = 0;
  *(uint8_t*)0x2000208a = 0;
  *(uint8_t*)0x2000208b = 0;
  *(uint8_t*)0x2000208c = 0;
  *(uint8_t*)0x2000208d = 0;
  *(uint8_t*)0x2000208e = 0;
  *(uint8_t*)0x2000208f = 0;
  *(uint8_t*)0x20002090 = 0;
  *(uint8_t*)0x20002091 = 0;
  *(uint8_t*)0x20002092 = 0;
  *(uint8_t*)0x20002093 = 0;
  *(uint8_t*)0x20002094 = 0;
  *(uint8_t*)0x20002095 = 0;
  *(uint8_t*)0x20002096 = 0;
  *(uint8_t*)0x20002097 = 0;
  *(uint8_t*)0x20002098 = 0;
  *(uint8_t*)0x20002099 = 0;
  *(uint8_t*)0x2000209a = 0;
  *(uint8_t*)0x2000209b = 0;
  *(uint8_t*)0x2000209c = 0;
  *(uint8_t*)0x2000209d = 0;
  *(uint8_t*)0x2000209e = 0;
  *(uint8_t*)0x2000209f = 0;
  *(uint8_t*)0x200020a0 = 0;
  *(uint8_t*)0x200020a1 = 0;
  *(uint8_t*)0x200020a2 = 0;
  *(uint8_t*)0x200020a3 = 0;
  *(uint8_t*)0x200020a4 = 0;
  *(uint8_t*)0x200020a5 = 0;
  *(uint8_t*)0x200020a6 = 0;
  *(uint8_t*)0x200020a7 = 0;
  *(uint8_t*)0x200020a8 = 0;
  *(uint8_t*)0x200020a9 = 0;
  *(uint8_t*)0x200020aa = 0;
  *(uint8_t*)0x200020ab = 0;
  *(uint8_t*)0x200020ac = 0;
  *(uint8_t*)0x200020ad = 0;
  *(uint8_t*)0x200020ae = 0;
  *(uint8_t*)0x200020af = 0;
  *(uint8_t*)0x200020b0 = 0;
  *(uint8_t*)0x200020b1 = 0;
  *(uint8_t*)0x200020b2 = 0;
  *(uint8_t*)0x200020b3 = 0;
  *(uint32_t*)0x200020b4 = 0;
  *(uint16_t*)0x200020b8 = 0x70;
  *(uint16_t*)0x200020ba = 0x98;
  *(uint32_t*)0x200020bc = 0;
  *(uint64_t*)0x200020c0 = 0;
  *(uint64_t*)0x200020c8 = 0;
  *(uint16_t*)0x200020d0 = 0x28;
  memcpy((void*)0x200020d2, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x200020ef = 0;
  *(uint32_t*)0x200020f0 = 0xfffffffe;
  *(uint32_t*)0x200020f8 = htobe32(-1);
  *(uint8_t*)0x200020fc = 0xac;
  *(uint8_t*)0x200020fd = 0x14;
  *(uint8_t*)0x200020fe = 0;
  *(uint8_t*)0x200020ff = 0xaa;
  *(uint32_t*)0x20002100 = htobe32(0);
  *(uint32_t*)0x20002104 = htobe32(0);
  memcpy((void*)0x20002108,
         "\x69\x70\x36\x67\x72\x65\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  memcpy((void*)0x20002118,
         "\x76\x63\x61\x6e\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  *(uint8_t*)0x20002128 = 0;
  *(uint8_t*)0x20002129 = 0;
  *(uint8_t*)0x2000212a = 0;
  *(uint8_t*)0x2000212b = 0;
  *(uint8_t*)0x2000212c = 0;
  *(uint8_t*)0x2000212d = 0;
  *(uint8_t*)0x2000212e = 0;
  *(uint8_t*)0x2000212f = 0;
  *(uint8_t*)0x20002130 = 0;
  *(uint8_t*)0x20002131 = 0;
  *(uint8_t*)0x20002132 = 0;
  *(uint8_t*)0x20002133 = 0;
  *(uint8_t*)0x20002134 = 0;
  *(uint8_t*)0x20002135 = 0;
  *(uint8_t*)0x20002136 = 0;
  *(uint8_t*)0x20002137 = 0;
  *(uint8_t*)0x20002138 = 0;
  *(uint8_t*)0x20002139 = 0;
  *(uint8_t*)0x2000213a = 0;
  *(uint8_t*)0x2000213b = 0;
  *(uint8_t*)0x2000213c = 0;
  *(uint8_t*)0x2000213d = 0;
  *(uint8_t*)0x2000213e = 0;
  *(uint8_t*)0x2000213f = 0;
  *(uint8_t*)0x20002140 = 0;
  *(uint8_t*)0x20002141 = 0;
  *(uint8_t*)0x20002142 = 0;
  *(uint8_t*)0x20002143 = 0;
  *(uint8_t*)0x20002144 = 0;
  *(uint8_t*)0x20002145 = 0;
  *(uint8_t*)0x20002146 = 0;
  *(uint8_t*)0x20002147 = 0;
  *(uint16_t*)0x20002148 = 0;
  *(uint8_t*)0x2000214a = 0;
  *(uint8_t*)0x2000214b = 0;
  *(uint32_t*)0x2000214c = 0;
  *(uint16_t*)0x20002150 = 0x70;
  *(uint16_t*)0x20002152 = 0xa8;
  *(uint32_t*)0x20002154 = 0;
  *(uint64_t*)0x20002158 = 0;
  *(uint64_t*)0x20002160 = 0;
  *(uint16_t*)0x20002168 = 0x38;
  memcpy((void*)0x2000216a, "\x53\x4e\x41\x54\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x20002187 = 0;
  *(uint32_t*)0x20002188 = 1;
  *(uint32_t*)0x2000218c = 0;
  *(uint32_t*)0x20002190 = htobe32(0xe0000002);
  *(uint32_t*)0x20002194 = htobe32(0xe0000001);
  *(uint16_t*)0x20002198 = 0;
  *(uint16_t*)0x2000219a = 0;
  *(uint8_t*)0x200021a0 = 0;
  *(uint8_t*)0x200021a1 = 0;
  *(uint8_t*)0x200021a2 = 0;
  *(uint8_t*)0x200021a3 = 0;
  *(uint8_t*)0x200021a4 = 0;
  *(uint8_t*)0x200021a5 = 0;
  *(uint8_t*)0x200021a6 = 0;
  *(uint8_t*)0x200021a7 = 0;
  *(uint8_t*)0x200021a8 = 0;
  *(uint8_t*)0x200021a9 = 0;
  *(uint8_t*)0x200021aa = 0;
  *(uint8_t*)0x200021ab = 0;
  *(uint8_t*)0x200021ac = 0;
  *(uint8_t*)0x200021ad = 0;
  *(uint8_t*)0x200021ae = 0;
  *(uint8_t*)0x200021af = 0;
  *(uint8_t*)0x200021b0 = 0;
  *(uint8_t*)0x200021b1 = 0;
  *(uint8_t*)0x200021b2 = 0;
  *(uint8_t*)0x200021b3 = 0;
  *(uint8_t*)0x200021b4 = 0;
  *(uint8_t*)0x200021b5 = 0;
  *(uint8_t*)0x200021b6 = 0;
  *(uint8_t*)0x200021b7 = 0;
  *(uint8_t*)0x200021b8 = 0;
  *(uint8_t*)0x200021b9 = 0;
  *(uint8_t*)0x200021ba = 0;
  *(uint8_t*)0x200021bb = 0;
  *(uint8_t*)0x200021bc = 0;
  *(uint8_t*)0x200021bd = 0;
  *(uint8_t*)0x200021be = 0;
  *(uint8_t*)0x200021bf = 0;
  *(uint8_t*)0x200021c0 = 0;
  *(uint8_t*)0x200021c1 = 0;
  *(uint8_t*)0x200021c2 = 0;
  *(uint8_t*)0x200021c3 = 0;
  *(uint8_t*)0x200021c4 = 0;
  *(uint8_t*)0x200021c5 = 0;
  *(uint8_t*)0x200021c6 = 0;
  *(uint8_t*)0x200021c7 = 0;
  *(uint8_t*)0x200021c8 = 0;
  *(uint8_t*)0x200021c9 = 0;
  *(uint8_t*)0x200021ca = 0;
  *(uint8_t*)0x200021cb = 0;
  *(uint8_t*)0x200021cc = 0;
  *(uint8_t*)0x200021cd = 0;
  *(uint8_t*)0x200021ce = 0;
  *(uint8_t*)0x200021cf = 0;
  *(uint8_t*)0x200021d0 = 0;
  *(uint8_t*)0x200021d1 = 0;
  *(uint8_t*)0x200021d2 = 0;
  *(uint8_t*)0x200021d3 = 0;
  *(uint8_t*)0x200021d4 = 0;
  *(uint8_t*)0x200021d5 = 0;
  *(uint8_t*)0x200021d6 = 0;
  *(uint8_t*)0x200021d7 = 0;
  *(uint8_t*)0x200021d8 = 0;
  *(uint8_t*)0x200021d9 = 0;
  *(uint8_t*)0x200021da = 0;
  *(uint8_t*)0x200021db = 0;
  *(uint8_t*)0x200021dc = 0;
  *(uint8_t*)0x200021dd = 0;
  *(uint8_t*)0x200021de = 0;
  *(uint8_t*)0x200021df = 0;
  *(uint8_t*)0x200021e0 = 0;
  *(uint8_t*)0x200021e1 = 0;
  *(uint8_t*)0x200021e2 = 0;
  *(uint8_t*)0x200021e3 = 0;
  *(uint8_t*)0x200021e4 = 0;
  *(uint8_t*)0x200021e5 = 0;
  *(uint8_t*)0x200021e6 = 0;
  *(uint8_t*)0x200021e7 = 0;
  *(uint8_t*)0x200021e8 = 0;
  *(uint8_t*)0x200021e9 = 0;
  *(uint8_t*)0x200021ea = 0;
  *(uint8_t*)0x200021eb = 0;
  *(uint8_t*)0x200021ec = 0;
  *(uint8_t*)0x200021ed = 0;
  *(uint8_t*)0x200021ee = 0;
  *(uint8_t*)0x200021ef = 0;
  *(uint8_t*)0x200021f0 = 0;
  *(uint8_t*)0x200021f1 = 0;
  *(uint8_t*)0x200021f2 = 0;
  *(uint8_t*)0x200021f3 = 0;
  *(uint32_t*)0x200021f4 = 0;
  *(uint16_t*)0x200021f8 = 0x70;
  *(uint16_t*)0x200021fa = 0xb8;
  *(uint32_t*)0x200021fc = 0;
  *(uint64_t*)0x20002200 = 0;
  *(uint64_t*)0x20002208 = 0;
  *(uint16_t*)0x20002210 = 0x48;
  memcpy((void*)0x20002212, "\x54\x45\x45\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x2000222f = 1;
  *(uint32_t*)0x20002230 = htobe32(0x7f000001);
  *(uint8_t*)0x20002240 = 0x73;
  *(uint8_t*)0x20002241 = 0x79;
  *(uint8_t*)0x20002242 = 0x7a;
  *(uint8_t*)0x20002243 = 0;
  *(uint8_t*)0x20002244 = 0;
  *(uint64_t*)0x20002250 = 0;
  *(uint32_t*)0x20002258 = htobe32(0);
  *(uint32_t*)0x2000225c = htobe32(0x7f000001);
  *(uint32_t*)0x20002260 = htobe32(0);
  *(uint32_t*)0x20002264 = htobe32(0);
  memcpy((void*)0x20002268,
         "\xea\x06\xa2\x8f\x44\x7c\xd3\x66\xb4\xdb\x6f\x4f\x4a\x2d\x3f\x92",
         16);
  *(uint8_t*)0x20002278 = 0x73;
  *(uint8_t*)0x20002279 = 0x79;
  *(uint8_t*)0x2000227a = 0x7a;
  *(uint8_t*)0x2000227b = 0;
  *(uint8_t*)0x2000227c = 0;
  *(uint8_t*)0x20002288 = 0;
  *(uint8_t*)0x20002289 = 0;
  *(uint8_t*)0x2000228a = 0;
  *(uint8_t*)0x2000228b = 0;
  *(uint8_t*)0x2000228c = 0;
  *(uint8_t*)0x2000228d = 0;
  *(uint8_t*)0x2000228e = 0;
  *(uint8_t*)0x2000228f = 0;
  *(uint8_t*)0x20002290 = 0;
  *(uint8_t*)0x20002291 = 0;
  *(uint8_t*)0x20002292 = 0;
  *(uint8_t*)0x20002293 = 0;
  *(uint8_t*)0x20002294 = 0;
  *(uint8_t*)0x20002295 = 0;
  *(uint8_t*)0x20002296 = 0;
  *(uint8_t*)0x20002297 = 0;
  *(uint8_t*)0x20002298 = 0;
  *(uint8_t*)0x20002299 = 0;
  *(uint8_t*)0x2000229a = 0;
  *(uint8_t*)0x2000229b = 0;
  *(uint8_t*)0x2000229c = 0;
  *(uint8_t*)0x2000229d = 0;
  *(uint8_t*)0x2000229e = 0;
  *(uint8_t*)0x2000229f = 0;
  *(uint8_t*)0x200022a0 = 0;
  *(uint8_t*)0x200022a1 = 0;
  *(uint8_t*)0x200022a2 = 0;
  *(uint8_t*)0x200022a3 = 0;
  *(uint8_t*)0x200022a4 = 0;
  *(uint8_t*)0x200022a5 = 0;
  *(uint8_t*)0x200022a6 = 0;
  *(uint8_t*)0x200022a7 = 0;
  *(uint16_t*)0x200022a8 = 0;
  *(uint8_t*)0x200022aa = 0;
  *(uint8_t*)0x200022ab = 0;
  *(uint32_t*)0x200022ac = 0;
  *(uint16_t*)0x200022b0 = 0x70;
  *(uint16_t*)0x200022b2 = 0xa8;
  *(uint32_t*)0x200022b4 = 0;
  *(uint64_t*)0x200022b8 = 0;
  *(uint64_t*)0x200022c0 = 0;
  *(uint16_t*)0x200022c8 = 0x38;
  memcpy((void*)0x200022ca, "\x44\x4e\x41\x54\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x200022e7 = 0;
  *(uint32_t*)0x200022e8 = 1;
  *(uint32_t*)0x200022ec = 0;
  *(uint32_t*)0x200022f0 = htobe32(0xe0000002);
  *(uint32_t*)0x200022f4 = htobe32(0);
  *(uint16_t*)0x200022f8 = 0;
  *(uint16_t*)0x200022fa = 0;
  *(uint64_t*)0x20003000 = 0;
  *(uint64_t*)0x20003008 = 0;
  *(uint64_t*)0x20003010 = 0;
  *(uint64_t*)0x20003018 = 0;
  *(uint64_t*)0x20003020 = 0;
  *(uint64_t*)0x20003028 = 0;
  *(uint64_t*)0x20003030 = 0;
  *(uint64_t*)0x20003038 = 0;
  syscall(__NR_setsockopt, r[1], 0, 0x40, 0x20002000, 0x300);
}

int main()
{
  setup_tun(0, true);
  loop();
  return 0;
}