// 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, 1, 0);
  *(uint32_t*)0x201edffc = 0x23;
  syscall(__NR_getsockopt, r[0], 0, 0x30, 0x209a2000, 0x201edffc);
  r[1] = syscall(__NR_socket, 2, 0x803, 2);
  memcpy((void*)0x2000f000, "\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*)0x2000f020 = 0x1b;
  *(uint32_t*)0x2000f024 = 4;
  *(uint32_t*)0x2000f028 = 0x2a0;
  *(uint32_t*)0x2000f02c = 0;
  *(uint32_t*)0x2000f030 = 0;
  *(uint32_t*)0x2000f034 = -1;
  *(uint32_t*)0x2000f038 = 0;
  *(uint32_t*)0x2000f03c = 0;
  *(uint32_t*)0x2000f040 = 0;
  *(uint32_t*)0x2000f044 = 0;
  *(uint32_t*)0x2000f048 = -1;
  *(uint32_t*)0x2000f04c = 0;
  *(uint32_t*)0x2000f050 = 0;
  *(uint32_t*)0x2000f054 = 4;
  *(uint64_t*)0x2000f058 = 0x20003000;
  *(uint8_t*)0x2000f060 = 0;
  *(uint8_t*)0x2000f061 = 0;
  *(uint8_t*)0x2000f062 = 0;
  *(uint8_t*)0x2000f063 = 0;
  *(uint8_t*)0x2000f064 = 0;
  *(uint8_t*)0x2000f065 = 0;
  *(uint8_t*)0x2000f066 = 0;
  *(uint8_t*)0x2000f067 = 0;
  *(uint8_t*)0x2000f068 = 0;
  *(uint8_t*)0x2000f069 = 0;
  *(uint8_t*)0x2000f06a = 0;
  *(uint8_t*)0x2000f06b = 0;
  *(uint8_t*)0x2000f06c = 0;
  *(uint8_t*)0x2000f06d = 0;
  *(uint8_t*)0x2000f06e = 0;
  *(uint8_t*)0x2000f06f = 0;
  *(uint8_t*)0x2000f070 = 0;
  *(uint8_t*)0x2000f071 = 0;
  *(uint8_t*)0x2000f072 = 0;
  *(uint8_t*)0x2000f073 = 0;
  *(uint8_t*)0x2000f074 = 0;
  *(uint8_t*)0x2000f075 = 0;
  *(uint8_t*)0x2000f076 = 0;
  *(uint8_t*)0x2000f077 = 0;
  *(uint8_t*)0x2000f078 = 0;
  *(uint8_t*)0x2000f079 = 0;
  *(uint8_t*)0x2000f07a = 0;
  *(uint8_t*)0x2000f07b = 0;
  *(uint8_t*)0x2000f07c = 0;
  *(uint8_t*)0x2000f07d = 0;
  *(uint8_t*)0x2000f07e = 0;
  *(uint8_t*)0x2000f07f = 0;
  *(uint8_t*)0x2000f080 = 0;
  *(uint8_t*)0x2000f081 = 0;
  *(uint8_t*)0x2000f082 = 0;
  *(uint8_t*)0x2000f083 = 0;
  *(uint8_t*)0x2000f084 = 0;
  *(uint8_t*)0x2000f085 = 0;
  *(uint8_t*)0x2000f086 = 0;
  *(uint8_t*)0x2000f087 = 0;
  *(uint8_t*)0x2000f088 = 0;
  *(uint8_t*)0x2000f089 = 0;
  *(uint8_t*)0x2000f08a = 0;
  *(uint8_t*)0x2000f08b = 0;
  *(uint8_t*)0x2000f08c = 0;
  *(uint8_t*)0x2000f08d = 0;
  *(uint8_t*)0x2000f08e = 0;
  *(uint8_t*)0x2000f08f = 0;
  *(uint8_t*)0x2000f090 = 0;
  *(uint8_t*)0x2000f091 = 0;
  *(uint8_t*)0x2000f092 = 0;
  *(uint8_t*)0x2000f093 = 0;
  *(uint8_t*)0x2000f094 = 0;
  *(uint8_t*)0x2000f095 = 0;
  *(uint8_t*)0x2000f096 = 0;
  *(uint8_t*)0x2000f097 = 0;
  *(uint8_t*)0x2000f098 = 0;
  *(uint8_t*)0x2000f099 = 0;
  *(uint8_t*)0x2000f09a = 0;
  *(uint8_t*)0x2000f09b = 0;
  *(uint8_t*)0x2000f09c = 0;
  *(uint8_t*)0x2000f09d = 0;
  *(uint8_t*)0x2000f09e = 0;
  *(uint8_t*)0x2000f09f = 0;
  *(uint8_t*)0x2000f0a0 = 0;
  *(uint8_t*)0x2000f0a1 = 0;
  *(uint8_t*)0x2000f0a2 = 0;
  *(uint8_t*)0x2000f0a3 = 0;
  *(uint8_t*)0x2000f0a4 = 0;
  *(uint8_t*)0x2000f0a5 = 0;
  *(uint8_t*)0x2000f0a6 = 0;
  *(uint8_t*)0x2000f0a7 = 0;
  *(uint8_t*)0x2000f0a8 = 0;
  *(uint8_t*)0x2000f0a9 = 0;
  *(uint8_t*)0x2000f0aa = 0;
  *(uint8_t*)0x2000f0ab = 0;
  *(uint8_t*)0x2000f0ac = 0;
  *(uint8_t*)0x2000f0ad = 0;
  *(uint8_t*)0x2000f0ae = 0;
  *(uint8_t*)0x2000f0af = 0;
  *(uint8_t*)0x2000f0b0 = 0;
  *(uint8_t*)0x2000f0b1 = 0;
  *(uint8_t*)0x2000f0b2 = 0;
  *(uint8_t*)0x2000f0b3 = 0;
  *(uint32_t*)0x2000f0b4 = 0;
  *(uint16_t*)0x2000f0b8 = 0x70;
  *(uint16_t*)0x2000f0ba = 0x98;
  *(uint32_t*)0x2000f0bc = 0;
  *(uint64_t*)0x2000f0c0 = 0;
  *(uint64_t*)0x2000f0c8 = 0;
  *(uint16_t*)0x2000f0d0 = 0x28;
  memcpy((void*)0x2000f0d2, "\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*)0x2000f0ef = 0;
  *(uint32_t*)0x2000f0f0 = 0xfffffffe;
  *(uint32_t*)0x2000f0f8 = htobe32(-1);
  *(uint8_t*)0x2000f0fc = 0xac;
  *(uint8_t*)0x2000f0fd = 0x14;
  *(uint8_t*)0x2000f0fe = 0;
  *(uint8_t*)0x2000f0ff = 0xaa;
  *(uint32_t*)0x2000f100 = htobe32(0);
  *(uint32_t*)0x2000f104 = htobe32(0);
  memcpy((void*)0x2000f108,
         "\x69\x70\x36\x67\x72\x65\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  memcpy((void*)0x2000f118,
         "\x76\x63\x61\x6e\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  *(uint8_t*)0x2000f128 = 0;
  *(uint8_t*)0x2000f129 = 0;
  *(uint8_t*)0x2000f12a = 0;
  *(uint8_t*)0x2000f12b = 0;
  *(uint8_t*)0x2000f12c = 0;
  *(uint8_t*)0x2000f12d = 0;
  *(uint8_t*)0x2000f12e = 0;
  *(uint8_t*)0x2000f12f = 0;
  *(uint8_t*)0x2000f130 = 0;
  *(uint8_t*)0x2000f131 = 0;
  *(uint8_t*)0x2000f132 = 0;
  *(uint8_t*)0x2000f133 = 0;
  *(uint8_t*)0x2000f134 = 0;
  *(uint8_t*)0x2000f135 = 0;
  *(uint8_t*)0x2000f136 = 0;
  *(uint8_t*)0x2000f137 = 0;
  *(uint8_t*)0x2000f138 = 0;
  *(uint8_t*)0x2000f139 = 0;
  *(uint8_t*)0x2000f13a = 0;
  *(uint8_t*)0x2000f13b = 0;
  *(uint8_t*)0x2000f13c = 0;
  *(uint8_t*)0x2000f13d = 0;
  *(uint8_t*)0x2000f13e = 0;
  *(uint8_t*)0x2000f13f = 0;
  *(uint8_t*)0x2000f140 = 0;
  *(uint8_t*)0x2000f141 = 0;
  *(uint8_t*)0x2000f142 = 0;
  *(uint8_t*)0x2000f143 = 0;
  *(uint8_t*)0x2000f144 = 0;
  *(uint8_t*)0x2000f145 = 0;
  *(uint8_t*)0x2000f146 = 0;
  *(uint8_t*)0x2000f147 = 0;
  *(uint16_t*)0x2000f148 = 0;
  *(uint8_t*)0x2000f14a = 0;
  *(uint8_t*)0x2000f14b = 0;
  *(uint32_t*)0x2000f14c = 0;
  *(uint16_t*)0x2000f150 = 0x70;
  *(uint16_t*)0x2000f152 = 0xa8;
  *(uint32_t*)0x2000f154 = 0;
  *(uint64_t*)0x2000f158 = 0;
  *(uint64_t*)0x2000f160 = 0;
  *(uint16_t*)0x2000f168 = 0x38;
  memcpy((void*)0x2000f16a, "\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*)0x2000f187 = 0;
  *(uint32_t*)0x2000f188 = 1;
  *(uint32_t*)0x2000f18c = 0;
  *(uint32_t*)0x2000f190 = htobe32(0xe0000002);
  *(uint32_t*)0x2000f194 = htobe32(0xe0000001);
  *(uint16_t*)0x2000f198 = 0;
  *(uint16_t*)0x2000f19a = 0;
  *(uint8_t*)0x2000f1a0 = 0;
  *(uint8_t*)0x2000f1a1 = 0;
  *(uint8_t*)0x2000f1a2 = 0;
  *(uint8_t*)0x2000f1a3 = 0;
  *(uint8_t*)0x2000f1a4 = 0;
  *(uint8_t*)0x2000f1a5 = 0;
  *(uint8_t*)0x2000f1a6 = 0;
  *(uint8_t*)0x2000f1a7 = 0;
  *(uint8_t*)0x2000f1a8 = 0;
  *(uint8_t*)0x2000f1a9 = 0;
  *(uint8_t*)0x2000f1aa = 0;
  *(uint8_t*)0x2000f1ab = 0;
  *(uint8_t*)0x2000f1ac = 0;
  *(uint8_t*)0x2000f1ad = 0;
  *(uint8_t*)0x2000f1ae = 0;
  *(uint8_t*)0x2000f1af = 0;
  *(uint8_t*)0x2000f1b0 = 0;
  *(uint8_t*)0x2000f1b1 = 0;
  *(uint8_t*)0x2000f1b2 = 0;
  *(uint8_t*)0x2000f1b3 = 0;
  *(uint8_t*)0x2000f1b4 = 0;
  *(uint8_t*)0x2000f1b5 = 0;
  *(uint8_t*)0x2000f1b6 = 0;
  *(uint8_t*)0x2000f1b7 = 0;
  *(uint8_t*)0x2000f1b8 = 0;
  *(uint8_t*)0x2000f1b9 = 0;
  *(uint8_t*)0x2000f1ba = 0;
  *(uint8_t*)0x2000f1bb = 0;
  *(uint8_t*)0x2000f1bc = 0;
  *(uint8_t*)0x2000f1bd = 0;
  *(uint8_t*)0x2000f1be = 0;
  *(uint8_t*)0x2000f1bf = 0;
  *(uint8_t*)0x2000f1c0 = 0;
  *(uint8_t*)0x2000f1c1 = 0;
  *(uint8_t*)0x2000f1c2 = 0;
  *(uint8_t*)0x2000f1c3 = 0;
  *(uint8_t*)0x2000f1c4 = 0;
  *(uint8_t*)0x2000f1c5 = 0;
  *(uint8_t*)0x2000f1c6 = 0;
  *(uint8_t*)0x2000f1c7 = 0;
  *(uint8_t*)0x2000f1c8 = 0;
  *(uint8_t*)0x2000f1c9 = 0;
  *(uint8_t*)0x2000f1ca = 0;
  *(uint8_t*)0x2000f1cb = 0;
  *(uint8_t*)0x2000f1cc = 0;
  *(uint8_t*)0x2000f1cd = 0;
  *(uint8_t*)0x2000f1ce = 0;
  *(uint8_t*)0x2000f1cf = 0;
  *(uint8_t*)0x2000f1d0 = 0;
  *(uint8_t*)0x2000f1d1 = 0;
  *(uint8_t*)0x2000f1d2 = 0;
  *(uint8_t*)0x2000f1d3 = 0;
  *(uint8_t*)0x2000f1d4 = 0;
  *(uint8_t*)0x2000f1d5 = 0;
  *(uint8_t*)0x2000f1d6 = 0;
  *(uint8_t*)0x2000f1d7 = 0;
  *(uint8_t*)0x2000f1d8 = 0;
  *(uint8_t*)0x2000f1d9 = 0;
  *(uint8_t*)0x2000f1da = 0;
  *(uint8_t*)0x2000f1db = 0;
  *(uint8_t*)0x2000f1dc = 0;
  *(uint8_t*)0x2000f1dd = 0;
  *(uint8_t*)0x2000f1de = 0;
  *(uint8_t*)0x2000f1df = 0;
  *(uint8_t*)0x2000f1e0 = 0;
  *(uint8_t*)0x2000f1e1 = 0;
  *(uint8_t*)0x2000f1e2 = 0;
  *(uint8_t*)0x2000f1e3 = 0;
  *(uint8_t*)0x2000f1e4 = 0;
  *(uint8_t*)0x2000f1e5 = 0;
  *(uint8_t*)0x2000f1e6 = 0;
  *(uint8_t*)0x2000f1e7 = 0;
  *(uint8_t*)0x2000f1e8 = 0;
  *(uint8_t*)0x2000f1e9 = 0;
  *(uint8_t*)0x2000f1ea = 0;
  *(uint8_t*)0x2000f1eb = 0;
  *(uint8_t*)0x2000f1ec = 0;
  *(uint8_t*)0x2000f1ed = 0;
  *(uint8_t*)0x2000f1ee = 0;
  *(uint8_t*)0x2000f1ef = 0;
  *(uint8_t*)0x2000f1f0 = 0;
  *(uint8_t*)0x2000f1f1 = 0;
  *(uint8_t*)0x2000f1f2 = 0;
  *(uint8_t*)0x2000f1f3 = 0;
  *(uint32_t*)0x2000f1f4 = 0;
  *(uint16_t*)0x2000f1f8 = 0x70;
  *(uint16_t*)0x2000f1fa = 0xb8;
  *(uint32_t*)0x2000f1fc = 0;
  *(uint64_t*)0x2000f200 = 0;
  *(uint64_t*)0x2000f208 = 0;
  *(uint16_t*)0x2000f210 = 0x48;
  memcpy((void*)0x2000f212, "\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*)0x2000f22f = 1;
  *(uint32_t*)0x2000f230 = htobe32(0x7f000001);
  memcpy((void*)0x2000f240,
         "\x69\x70\x36\x74\x6e\x6c\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  *(uint64_t*)0x2000f250 = 0;
  *(uint32_t*)0x2000f258 = htobe32(0);
  *(uint32_t*)0x2000f25c = htobe32(0x7f000001);
  *(uint32_t*)0x2000f260 = htobe32(0);
  *(uint32_t*)0x2000f264 = htobe32(0);
  memcpy((void*)0x2000f268,
         "\xea\x06\xa2\x8f\x44\x7c\xd3\x66\xb4\xdb\x6f\x4f\x4a\x2d\x3f\x92",
         16);
  *(uint8_t*)0x2000f278 = 0x73;
  *(uint8_t*)0x2000f279 = 0x79;
  *(uint8_t*)0x2000f27a = 0x7a;
  *(uint8_t*)0x2000f27b = 0;
  *(uint8_t*)0x2000f27c = 0;
  *(uint8_t*)0x2000f288 = 0;
  *(uint8_t*)0x2000f289 = 0;
  *(uint8_t*)0x2000f28a = 0;
  *(uint8_t*)0x2000f28b = 0;
  *(uint8_t*)0x2000f28c = 0;
  *(uint8_t*)0x2000f28d = 0;
  *(uint8_t*)0x2000f28e = 0;
  *(uint8_t*)0x2000f28f = 0;
  *(uint8_t*)0x2000f290 = 0;
  *(uint8_t*)0x2000f291 = 0;
  *(uint8_t*)0x2000f292 = 0;
  *(uint8_t*)0x2000f293 = 0;
  *(uint8_t*)0x2000f294 = 0;
  *(uint8_t*)0x2000f295 = 0;
  *(uint8_t*)0x2000f296 = 0;
  *(uint8_t*)0x2000f297 = 0;
  *(uint8_t*)0x2000f298 = 0;
  *(uint8_t*)0x2000f299 = 0;
  *(uint8_t*)0x2000f29a = 0;
  *(uint8_t*)0x2000f29b = 0;
  *(uint8_t*)0x2000f29c = 0;
  *(uint8_t*)0x2000f29d = 0;
  *(uint8_t*)0x2000f29e = 0;
  *(uint8_t*)0x2000f29f = 0;
  *(uint8_t*)0x2000f2a0 = 0;
  *(uint8_t*)0x2000f2a1 = 0;
  *(uint8_t*)0x2000f2a2 = 0;
  *(uint8_t*)0x2000f2a3 = 0;
  *(uint8_t*)0x2000f2a4 = 0;
  *(uint8_t*)0x2000f2a5 = 0;
  *(uint8_t*)0x2000f2a6 = 0;
  *(uint8_t*)0x2000f2a7 = 0;
  *(uint16_t*)0x2000f2a8 = 0;
  *(uint8_t*)0x2000f2aa = 0;
  *(uint8_t*)0x2000f2ab = 0;
  *(uint32_t*)0x2000f2ac = 0;
  *(uint16_t*)0x2000f2b0 = 0x70;
  *(uint16_t*)0x2000f2b2 = 0xa8;
  *(uint32_t*)0x2000f2b4 = 0;
  *(uint64_t*)0x2000f2b8 = 0;
  *(uint64_t*)0x2000f2c0 = 0;
  *(uint16_t*)0x2000f2c8 = 0x38;
  memcpy((void*)0x2000f2ca, "\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*)0x2000f2e7 = 0;
  *(uint32_t*)0x2000f2e8 = 1;
  *(uint32_t*)0x2000f2ec = 0;
  *(uint32_t*)0x2000f2f0 = htobe32(0xe0000002);
  *(uint32_t*)0x2000f2f4 = htobe32(0);
  *(uint16_t*)0x2000f2f8 = 0;
  *(uint16_t*)0x2000f2fa = 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, 0x2000f000, 0x300);
}

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