[Bug 1674532] Re: Ubuntu 14.04 broken during PXE boot

[thedarkwinter]

Just like my earlier comment, this _fix_ *broke* a running system after
it was automatically applied.

Start-Date: 2017-03-22  04:17:12
Commandline: /usr/bin/unattended-upgrade
Upgrade: libc6:amd64 (2.23-0ubuntu6, 2.23-0ubuntu7), locales:amd64 (2.23-0ubuntu6, 2.23-0ubuntu7), libc-bin:amd64 (2.23-0ubuntu6, 2.23-0ubuntu7), multiarch-support:amd64 (2.23-0ubuntu6, 2.23-0ubuntu7)
End-Date: 2017-03-22  04:17:34

Immediately after that, the system is no longer able to resolve names.
On my DNS server, I can see this is sending queries of TYPE62321 instead
of A

22-Mar-2017 04:17:30.407 queries: info: client 172.16.x.x#63762
(host.interna.domain): query: host.interna.domain IN TYPE62321 +
(172.16.1.10)

A reboot clears the issue, but the point is that applying the update is
still a "critical" bug because it breaks [some] running systems. In this
case, the system is running apache+php. It might be that it only effects
certain things.

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https://bugs.launchpad.net/bugs/1674532

Title:
  Ubuntu 14.04 broken during PXE boot

Status in eglibc package in Ubuntu:
  Invalid
Status in glibc package in Ubuntu:
  Fix Committed
Status in eglibc source package in Precise:
  Fix Released
Status in glibc source package in Precise:
  Invalid
Status in eglibc source package in Trusty:
  Fix Released
Status in glibc source package in Trusty:
  Invalid
Status in eglibc source package in Xenial:
  Invalid
Status in glibc source package in Xenial:
  Fix Released
Status in eglibc source package in Yakkety:
  Invalid
Status in glibc source package in Yakkety:
  Invalid

Bug description:
  After installing the libc6_2.19-0ubuntu6.10_amd64_udeb package during
  the automated install of ubuntu 14.04.5, the system was suddenly
  unable to resolve hostnames via dns. Installing -0ubuntu6.9 resolved
  the issue. Reinstalling -ubuntu6.10 broke the system again.

  I note that -ubuntu6.10 was recently added to the archive.

  I am currently unable to install Ubuntu 14.04.5.

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