DOKK / manpages / debian 12 / libowfat-dev / dns_name4_domain.3.en
dns_name4_domain(3) Library Functions Manual dns_name4_domain(3)

dns_name4_domain - construct host name for reverse lookup

#include <libowfat/dns.h>

void dns_name4_domain(char q[DNS_NAME4_DOMAIN],
const char* ip[4]);

dns_name4_domain is a low-level component of dns_name4. It converts an IP address such as 1.2.3.4 into a domain name such as 4.3.2.1.in-addr.arpa and places the packet-encoded domain name into q.

q is zero terminated.

q must have space for DNS_NAME4_DOMAIN bytes.

dns_name4(3), dns_name6_domain(3)