Manual Reference Pages - LIBOWFAT_DNS_IP4_PACKET (3)
dns_ip4_packet - extract IPv4 address from DNS answer packet
int dns_ip4_packet(stralloc* out,const char* buf,
unsigned int len);
dns_ip4_packet is a low-level component of dns_ip4, designed to support
asynchronous DNS lookups. It reads a DNS packet of length len from
buf, extracts IP addresses from the answer section of the packet,
puts the addresses into out, and returns 0 or -1 the same way as
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