I sent a SIGUSR1 signal to the dnsmasq process to make it write statistics to the system log. Here's an excerpt of what dnsmasq wrote to the system log:
daemon.info dnsmasq[1]: Host Address Flags Expires
daemon.info dnsmasq[1]: www.youtube.com CF Fri Dec 1 18:30:12 2023
daemon.info dnsmasq[1]: ip6-allnodes ff02::1 6FRI H
daemon.info dnsmasq[1]: contacts.fe.apple-dns.net 17.248.224.2 4F Fri Dec 1 18:31:07 2023
daemon.info dnsmasq[1]: play.google.com 192.178.50.78 4F Fri Dec 1 18:33:33 2023
...
This appears to be a list of unexpired DNS cache entries. However, I don't understand the meaning of the "Flags" column. What do "CF", "6FRI H", and "4F" mean?
