[Bug 2055302] [NEW] Consider backporting glibc bug 12154 to ubuntu 20.04 - DNS resolution fails if a CNAME target begins with a hyphen

[Manuel Bucher]

Public bug reported:

See:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1870497
* https://sourceware.org/bugzilla/show_bug.cgi?id=12154

** Affects: glibc (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Consider backporting glibc bug 12154 to ubuntu 20.04 -  DNS resolution
  fails if a CNAME target begins with a hyphen

Status in glibc package in Ubuntu:
  New

Bug description:
  See:
  * https://bugzilla.mozilla.org/show_bug.cgi?id=1870497
  * https://sourceware.org/bugzilla/show_bug.cgi?id=12154

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