fmt_ip6if man page on Alpinelinux

fmt_ip6if man page on Alpinelinux

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fmt_ip6if(3)							  fmt_ip6if(3)

NAME
       fmt_ip6if - write a formatted ASCII representation of an IPv6 number

SYNTAX
       #include <ip6.h>

       unsigned int fmt_ip6if(char *dest,const char ip[16],uint32 scope_id);

DESCRIPTION
       fmt_ip6if  formats  an  IPv6 number in ASCII representation from ip and
       writes the result into dest. It returns the number of bytes written.

       fmt_ip6if will apply "::" compression to the output.

       If ip is an IPv4-mapped IPv6 address, fmt_ip6if will output the last  4
       bytes as IPv4 number in dotted-decimal notation.

       If  dest equals FMT_LEN (i.e. is zero), fmt_ip6if returns the number of
       bytes it would have written.

       fmt_ip6 does not append \0.

       ip6.h defines the integer IP6_FMT to be big  enough  to	contain	 every
       possible	 fmt_ip6  output  plus \0.  However, for fmt_ip6if you need to
       add 1 for the '%' and IF_NAMESIZE from  <net/if.h>  for	the  interface
       name.

EXAMPLE
       #include <ip6.h>

	 char buf[IP6_FMT];
	 char ip[16];
	 scope_id sid;
	 buf[fmt_ip6if(buf,ip,sid)]=0;

SEE ALSO
       scan_ip6(3), fmt_ip4(3)

								  fmt_ip6if(3)

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