.TH scan_ip6 3 .SH NAME scan_ip6 \- parse an IPv6 number in ASCII representation .SH SYNTAX .B #include int \fBscan_ip6\fP(const char *\fIsrc\fR,char \fIip\fR[16]); .SH DESCRIPTION scan_ip6 parses an IPv6 number in RFC1884 ASCII representation from \fIsrc\fR and writes the result into \fIip\fR. It returns the number of bytes read from \fIsrc\fR 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 \fB0177.0.0.1\fR) or hexadecimal numbers (like \fB0x7f000001\fR) in the IPv4 part. .SH EXAMPLE #include .br #include char buf[]="::1"; char ip[16]; if (scan_ip6(buf,ip) != str_len(buf)) parse_error(); .SH "SEE ALSO" fmt_ip6(3), scan_ip4(3), inet_pton(3)