dnsreplay tool: "The issue is a stack-based buffer overflow occurring when replaying a specially crafted PCAP file with the `--ecs-stamp` option enabled, leading to a denial of service or potentially arbitrary code execution. Regardless of this issue, we do not advise the use of dnsreplay with untrusted PCAP files." https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2018-02.html