How does adblock redirect port 5353 853?

  1. 5353 - Isn't it only used for mDNS/DNS-SD/Bonjour/(What else ?) and those only use IPs - and ff02::fb ? Am I right ?
  2. 853 - DoT It is encrypted so it will be blocked ?

5353 can also be used for DNS

About 853, some applications using DoT will fall back to regular (port 53) DNS if DoT is not working otherwise it will be blocked

You can also specify a canary domain to signal to some applications not to use DoT