extern const char* ircd_ntoa_r(char* buf, const struct irc_in_addr* addr);
#define ircd_aton(ADDR, STR) ipmask_parse((STR), (ADDR), NULL)
extern int ipmask_parse(const char *in, struct irc_in_addr *mask, unsigned char *bits_ptr);
extern const char* ircd_ntoa_r(char* buf, const struct irc_in_addr* addr);
#define ircd_aton(ADDR, STR) ipmask_parse((STR), (ADDR), NULL)
extern int ipmask_parse(const char *in, struct irc_in_addr *mask, unsigned char *bits_ptr);