The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the "DNSBomb" issue.
https://www.isc.org/blogs/2024-dnsbomb/
https://sp2024.ieee-security.org/accepted-papers.html
https://nlnetlabs.nl/projects/unbound/security-advisories/
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de