text: //
  //  OSSIPv6PrefixResolver.h
  //
  //  Created by lingkun on 16/5/16.
  //  Edit by zhouzhuo on 16/5/22
  //  Copyright © 2016年 Ali. All rights reserved.
  //
  
  #ifndef AlicloudIPv6PrefixResolver_h
  #define AlicloudIPv6PrefixResolver_h
  #import <Foundation/Foundation.h>
  
  @interface OSSIPv6PrefixResolver : NSObject
  
  + (instancetype)getInstance;
  
  - (void)updateIPv6Prefix;
  
  - (NSString *)convertIPv4toIPv6:(NSString *)ipv4;
  
  @end
  
  #endif /* OSSIPv6PrefixResolver_h */
  