Context I'm working on a DNS proxy network extension and would like to be able to parse replies from the upstream DNS server for extracting the TTL for caching purposes. I already have a working DNS proxy network extension, but at the moment I am not handling the responses and just forward all queries to an upstream DNS server. My understanding is that I have to take care of result caching myself because I cannot use the system resolver in the DNS proxy network extension. Question What is the best way to parse DNS replies in Swift to extract e.g. the TTL? I found an old thread (https://forums.swift.org/t/parse-dns-packet-requests-and-responses/41797/5) describing a way to achieve this using dns_util. The solution described there works - but dns_parse_packet in dns_util have been marked deprecated since iOS 16. So, I am wondering if there is a better way to achieve the parser. I tried to utilize the dnssd framework but was unable to figure out how to achieve only parsing of the raw DNS reply. If that is possible it would be great to get some pointers.