NAME

       scan_ip6 - parse an IPv6 number in ASCII representation

SYNTAX

       #include <ip6.h>

       int scan_ip6(const char *src,char ip[16]);

DESCRIPTION

       scan_ip6  parses  an  IPv6  number in RFC1884 ASCII representation from src and writes the
       result into ip. It returns the number of bytes read from src or 0 if the parsing failed.

       scan_ip6 accepts upper and lower case hex letters, it  understands  "::"  compression  and
       partial IPv4 addresses as in "::FFFF:129.144.52.38".

       To  allow  transparent  usage of IPv4 in IPv6 applications, scan_ip6 also understands IPv4
       addresses in dotted-decimal notation and will return an  IPv4-mapped  IPv6  address  (i.e.
       "127.0.0.1" will be parsed as "::FFFF:127.0.0.1".

       Unlike many other IP parsing routines, scan_ip6 does not recognize octal (like 0177.0.0.1)
       or hexadecimal numbers (like 0x7f000001) in the IPv4 part.

EXAMPLE

       #include <str.h>
       #include <ip6.h>

         char buf[]="::1";
         char ip[16];
         if (scan_ip6(buf,ip) != str_len(buf))
           parse_error();

SEE ALSO

       fmt_ip6(3), scan_ip4(3), inet_pton(3)

                                                                                      scan_ip6(3)