Revolution for the Domain Name System! To maintain the stability of hosted domain names since the introduction of the EDNS standard in 1999, several DNS servers have simply implemented patches. However, since February 1, patches that do not comply with the EDNS update have been removed. This can therefore lead to malfunctions or even the deletion of domain names hosted on these servers.
A tool is available on the DNS Flag Day website to test your domain name. "This change will make most DNS operations slightly more efficient and will also allow operators to deploy new features, including mechanisms to protect against DDoS attacks," says the dedicated site.
Source : Le Monde Informatique