iOS中如何获取wifi的路由器地址

iOS开发中，手机连接wifi，怎么获取wifi或网关的路由器的地址

刚遇到这个问题 http://blog.csdn.net/u010990519/article/details/41677549

转载，或许可以参考，ios设备唯一标识获取策略

iOS中获取网卡mac的代码如下：
#include // Per msqr

#include

#include

#include

#pragma mark MAC addy

// Return the local MAC addy

// Courtesy of FreeBSD hackers email list

// Accidentally munged during previous update. Fixed thanks to mlamb.

• (NSString *) macaddress
  {
  int mib[6];
  size_t len;
  char *buf;
  unsigned char *ptr;
  struct if_msghdr *ifm;
  struct sockaddr_dl *sdl;

  mib[0] = CTL_NET;
  mib1 = AF_ROUTE;
  mib[2] = 0;
  mib[3] = AF_LINK;
  mib[4] = NET_RT_IFLIST;

  if ((mib[5] = if_nametoindex("en0")) == 0) {
  printf("Error: if_nametoindex error/n");
  return NULL;
  }

  if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
  printf("Error: sysctl, take 1/n");
  return NULL;
  }

  if ((buf = malloc(len)) == NULL) {
  printf("Could not allocate memory. error!/n");
  return NULL;
  }

  if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
  printf("Error: sysctl, take 2");
  return NULL;
  }

  ifm = (struct if_msghdr *)buf;
  sdl = (struct sockaddr_dl *)(ifm + 1);
  ptr = (unsigned char *)LLADDR(sdl);
  // NSString *outstring = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
  
  NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
  free(buf);
  return [outstring uppercaseString];
  }

很感兴趣，是不是得查一下路由表相关的东西？