.fp 5 B
.de Af
.ds ;G \\*(;G\\f\\$1\\$3\\f\\$2
.if !\\$4 .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
..
.de aF
.ie \\$3 .ft \\$1
.el \{\
.ds ;G \&
.nr ;G \\n(.f
.Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
\\*(;G
.ft \\n(;G \}
..
.de L
.aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
..
.de LR
.aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
..
.de RL
.aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
..
.de EX		\" start example
.ta 1i 2i 3i 4i 5i 6i
.PP
.RS 
.PD 0
.ft 5
.nf
..
.de EE		\" end example
.fi
.ft
.PD
.RE
.PP
..
.TH IP6 3
.SH NAME
ip6 \- IP V6 address support
.SH SYNOPSIS
.EX
#include <ip6.h>

char*      fmtip6(unsigned char* addr, int bits);
int        strtoip6(const char* str, char** end, unsigned char* addr, unsigned char* bits);
.EE

.SH DESCRIPTION
.L fmtip6()
formats the IPV6 address
.L addr
with optional prefix bits
.L bits
(0 if not a prefix) into a thread-specific 0-terminated temporary buffer and returns a pointer
to the formatted value.

.PP
.L strtoip6()
converts a formatted IPV6 address from the 0-terminated string
.L str
into a host order IPV6 address in
.L addr
which must be a buffer of at least
.L IP6ADDR
bytes.
If
.L bits
is not 0 then an optional
.BI / bits
(prefix size in bits) is parsed and
.L *bits
is set to the number of prefix bits.
If
.L end
is not 0 then
.L *end
will point to the first unparsed character in
.L str
on return.
0 is returned on success, -1 on failure.

.SH "SEE ALSO"
dss(1)