Hi,Today we released DNSdist 2.0.6, fixing several issues. The notable ones are: - the feature that was introduced in 2.0.0 to limit the rate of new TCP or QUIC connections that a given client can open per second has a serious bug, coming from a confusion over the interval, which is set in minutes, and the rate, which is set in seconds, causing clients to be blocked a lot sooner than they should have been - there was a data race in the CDB Key-Value store implementation. This was fixed by preventing threads from accessing the same CDB object concurrently, which might have a performance impact for users that rely heavily on CDB. Please reach out to us if you experience such a performance impact
- the BPFFilter::addRangeRule feature was not working properly- configured buffer sizes for UDP sockets were only applied to incoming sockets, not outgoing ones
- AF_XDP/XSK could not be enabled from YAML- the TLS session cache for outgoing connections to backends was not properly cleaned up - the computation of the "Top N" metrics for suffix-based dynamic block counters was wrong - DownstreamState::setHealthCheckParams was sometimes overwriting the wrong value
- a memory leak was found in the SNMP metrics implementation- the maximum size of a DNS over QUIC query was slightly off, which might have been a problem for very large queries
Please see the DNSdist website [1] for the more complete changelog [2] and the current documentation. The upgrade guide is also available there [3].
Please send us all feedback and issues you might have via the mailing list, or in case of a bug, via GitHub [4].
The release tarball [5] and its signature [6] are available on the downloads website, and packages for several distributions are available from our repository [7].
[1]: https://dnsdist.org [2]: https://dnsdist.org/changelog.html#change-2.0.6 [3]: https://dnsdist.org/upgrade_guide.html [4]: https://github.com/PowerDNS/pdns/issues/new/choose [5]: https://downloads.powerdns.com/releases/dnsdist-2.0.6.tar.xz [6]: https://downloads.powerdns.com/releases/dnsdist-2.0.6.tar.xz.sig [7]: https://repo.powerdns.com Best regards, - Remi Gacogne PowerDNS.COM BV - https://www.powerdns.com/
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