Hi, On 17/03/2023 16:23, david n via dnsdist wrote:
BUT : for the "any" request I have this result, and I don't know if it can produce something bad, have you any idea ?[root@node ~]# dig any www.toto.com @X.X.X.X ;; communications error to X.X.X.X#53: end of file ;; communications error to X.X.X.X#53: end of file
dig defaults to sending ANY queries over TCP, instead of UDP, and here dnsdist closes the TCP connection as soon as the query is dropped, triggering the message you are seeing. It's not clear to me why the connection is dropped from your configuration, though, have you shared the actual configuration?
dnsdist could keep the TCP connection around instead but it would be too nice, because timeouts over TCP are usually quite longer than over UDP and the connection would just sit there, consuming socket descriptors for nothing.
Hope that helps, Best regards, -- Remi Gacogne PowerDNS.COM BV - https://www.powerdns.com/
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