text: #ifndef DLINK_SOFTWARE
  #error do not include it if you do not know what it is
  #endif
  
  
  #ifndef APSON_DRU_UTILS_H
  #define APSON_DRU_UTILS_H
  
  
  #include <net/if.h>
  extern int dru_wait_br_mac(int sock, struct ifreq *ifr, int seconds);
  extern int dru_wait_ifaddr4(int sock4, struct ifreq *ifr, int seconds);
  
  extern int dru_mac_conf_is_allowed(unsigned char mac[6]);
  
  #endif
  