CoreDNS-1.6.6 Release

CoreDNS-1.6.6 Release Notes.

The CoreDNS team has released CoreDNS-1.6.6.

A fairly small release that polishes various plugins and fixes a bunch of bugs.


The dependency has been updated to v1.1.25 to fix a DNS related security vulnerability (


A new plugin bufsize has been added that prevents IP fragmentation for the DNS Flag Day 2020 and to deal with DNS vulnerabilities.

  • cache added a serve_stale option similar to unbound’s serve_expired.
  • sign fix signing of authoritative data that we are not authoritative for.
  • transfer fixed calling wg.Add in main goroutine to avoid race conditons.

Brought to You By

Chris O’Haver Gonzalo Paniagua Javier Guangming Wang Kohei Yoshida Miciah Dashiel Butler Masters Miek Gieben Yong Tang Zou Nengren

Noteworthy Changes

CoreDNS Authors
Published: and tagged 1.6.6, Notes and Release using 192 words.