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36 lines
1.0 KiB
Groff
36 lines
1.0 KiB
Groff
21 years ago
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.TH fmt_ip6if 3
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.SH NAME
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fmt_ip6if \- write a formatted ASCII representation of an IPv6 number
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.SH SYNTAX
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.B #include <ip6.h>
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unsigned int \fBfmt_ip6if\fP(char *\fIdest\fR,const char \fIip\fR[16],uint32 \fIscope_id\fR);
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.SH DESCRIPTION
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fmt_ip6if formats an IPv6 number in ASCII representation from \fIip\fR and
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writes the result into \fIdest\fR. It returns the number of bytes
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written.
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fmt_ip6if will apply "::" compression to the output.
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If \fIip\fR is an IPv4-mapped IPv6 address, fmt_ip6if will output the last
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4 bytes as IPv4 number in dotted-decimal notation.
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If \fIdest\fR equals FMT_LEN (i.e. is zero), fmt_ip6if returns the number
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of bytes it would have written.
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fmt_ip6 does not append \\0.
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ip6.h defines the integer IP6_FMT to be big enough to contain every
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possible fmt_ip6 output plus \\0. However, for fmt_ip6if you need to
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add 1 for the '%' and IF_NAMESIZE from <net/if.h> for the interface
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name.
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.SH EXAMPLE
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#include <ip6.h>
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char buf[IP6_FMT];
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char ip[16];
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scope_id sid;
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buf[fmt_ip6if(buf,ip,sid)]=0;
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.SH "SEE ALSO"
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scan_ip6(3), fmt_ip4(3)
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