[Bug 1822416] Re: resolve: do not hit CNAME or DNAME entry in NODATA cache

[Eric Desrochers]

Seems like Disco and late already have the requested fix.

$ git describe --contains 3740146a4cbd99883af79e375ee4836206dcea4e
v240

$ rmadison systemd
 systemd | 204-5ubuntu20    | trusty          | source
 systemd | 204-5ubuntu20.31 | trusty-security | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 systemd | 204-5ubuntu20.31 | trusty-updates  | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 systemd | 229-4ubuntu4     | xenial          | source, amd64, arm64, armhf, i386, powerpc, ppc64el, s390x
 systemd | 229-4ubuntu21.21 | xenial-security | source, amd64, arm64, armhf, i386, powerpc, ppc64el, s390x
 systemd | 229-4ubuntu21.23 | xenial-updates  | source, amd64, arm64, armhf, i386, powerpc, ppc64el, s390x
 systemd | 237-3ubuntu10    | bionic          | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 237-3ubuntu10.29 | bionic-security | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 237-3ubuntu10.33 | bionic-updates  | source, amd64, arm64, armhf, i386, ppc64el, s390x

# Not affected:
 systemd | 240-6ubuntu5     | disco           | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 240-6ubuntu5.7   | disco-security  | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 240-6ubuntu5.8   | disco-updates   | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 242-7ubuntu3     | eoan            | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 242-7ubuntu3.2   | eoan-updates    | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 244-3ubuntu1     | focal           | source, amd64, arm64, armhf, i386, ppc64el, s390x
 systemd | 244-3ubuntu5     | focal-proposed  | source, amd64, arm64, armhf, i386, ppc64el, s390x


** Changed in: systemd (Ubuntu Focal)
       Status: Confirmed => Fix Released

** Changed in: systemd (Ubuntu Eoan)
       Status: New => Fix Released

** Changed in: systemd (Ubuntu Disco)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1822416

Title:
  resolve: do not hit CNAME or DNAME entry in NODATA cache

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  Confirmed
Status in systemd source package in Disco:
  Fix Released
Status in systemd source package in Eoan:
  Fix Released
Status in systemd source package in Focal:
  Fix Released

Bug description:
  The question: DNS A record lookups fail to resolve due to cached CNAME
  NODATA lookups ...

  https://askubuntu.com/questions/1063462/18-04-server-systemd-resolve-
  returns-cached-cname-nodata-for-a-lookup

  Upstream at Github: Systemd issue 998 - Cached cname NODATA returned
  for A lookup ...

  https://github.com/systemd/systemd/issues/9833

  
  Please patch ...

  https://github.com/systemd/systemd/commit/3740146a4cbd99883af79e375ee4836206dcea4e

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