debian man page for dns_name6_domain

dns_name6_domain(3)					     Library Functions Manual					       dns_name6_domain(3)

NAME
       dns_name6_domain - construct host name for reverse lookup

SYNTAX
       #include <dns.h>

       void dns_name6_domain(char q[DNS_NAME6_DOMAIN],
			    const char* ip[16]);

DESCRIPTION
       dns_name6_domain  is a low-level component of dns_name6.  It converts an IP address such as 4321:0:1:2:3:4:567:89ab into a domain name such
       as b.a.9.8.7.6.5.0.4.0.0.0.3.0.0.0.2.0.0.0.1.0.0.0.0.0.0.0.1.2.3.4.IP6.ARPA and places the packet-encoded domain name into q.

       q is zero terminated.

       q must have space for DNS_NAME6_DOMAIN bytes.

SEE ALSO
       dns_name6(3), dns_name4_domain(3)

															       dns_name6_domain(3)