[Bug 1849608] Re: systemd resolv should separate the output of stdout and stderr

Mon Nov 25 10:55:23 UTC 2019

*** This bug is a duplicate of bug 1805183 ***
    https://bugs.launchpad.net/bugs/1805183

This bug was fixed in the package systemd - 242-7ubuntu3.2

---------------
systemd (242-7ubuntu3.2) eoan; urgency=medium

  [ Dan Streetman ]
  * d/extra/dhclient-enter-resolved-hook:
    - Replace use of bash-only &> with > and 2> (LP: #1849608)
  * d/p/lp1849658-resolved-set-stream-type-during-DnsStream-creation.patch:
    - Fix bug in refcounting TCP stream types (LP: #1849658)
  * d/extra/dhclient-enter-resolved-hook: cleanup temp $newstate file

  [ Rafael David Tinoco ]
  * Add support to KeepConfiguration= fixing behaviour for HA (LP: #1815101)
    - d/p/lp1815101-01-networkd-add-support-to-keep-configuration.patch
    - d/p/lp1815101-02-networkd-stop-clients-when-networkd-shuts-down.patch
    - d/p/lp1815101-03-network-add-KeepConfiguration-dhcp-on-stop.patch
    - d/p/lp1815101-04-network-make-KeepConfiguration-static-drop-DHCP-addr.patch
    - d/p/lp1815101-05-man-add-documentation-about-KeepConfiguration.patch

systemd (242-7ubuntu3.1) eoan; urgency=medium

  [ Balint Reczey ]
  * Fix shutdown and related actions from the login screen (LP: #1847896)
    File: debian/patches/logind-consider-greeter-sessions-suitable-as-display-sess.patch
    https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b407dfd8c9dc81594553c27467c35b383333d74c
  * debian/gbp.conf: Set debian-branch to ubuntu-eoan
    File: debian/gbp.conf
    https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=f399ce2cf4701a2dbb4b3505d2dd17a210d62f5c

  [ Dan Streetman ]
  * Fix bogus routes after DHCP lease change (LP: #1831787)
    Files:
    - debian/patches/lp1831787/0001-networkd-Add-back-static-routes-after-DHCPv4-lease-e.patch
    - debian/patches/lp1831787/0002-network-set-preferred-source-in-removing-route-entry.patch
    - debian/patches/lp1831787/0003-network-lower-log-level-about-critical-connection.patch
    - debian/patches/lp1831787/0004-network-reset-Link-dhcp4_configured-flag-earlier.patch
    - debian/patches/lp1831787/0005-network-split-dhcp_lease_lost-into-small-pieces.patch
    https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=ced3f5c2f619083f7beb164d94d4ccfe52222fe8
  * Set src address for dhcp 'classless' routes (LP: #1835581)
    File: debian/patches/lp1835581-src-network-networkd-dhcp4.c-set-prefsrc-for-classle.patch
    https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=6a7ef370fb1335548448920be4ae6176b67044a8
  * Allows cache=no-negative option to be set, ignoring negative answers to
    be cached (LP: #1668771)
    File: debian/patches/lp1668771-resolved-switch-cache-option-to-a-tri-state-option-s.patch
    https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=27def26f5b1d1b8ba314c4a925fc1b7c43837f86

 -- Dan Streetman <ddstreet at canonical.com>  Fri, 01 Nov 2019 16:33:08
-0400

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

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https://bugs.launchpad.net/bugs/1849608

Title:
  systemd resolv should separate the output of stdout and stderr

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Eoan:
  Fix Released
Status in systemd source package in Focal:
  Fix Released

Bug description:
  [impact]

  dhclient fails to notify resolved about DNS servers due to bash-
  specific redirect inside 'resolved' hook script

  [test case]

  see original description below

  [regression potential]

  any regression would likely cause resolved not to be aware of
  dhclient-provided dns servers

  [other info]

  This is needed only in Eoan and later; X/B/D do not have the bash-
  specific redirect '&>' in their hook file.

  The change that originally added the &> to eoan is also being applied
  to b/d in bug 1805183, but with this fix added also.

  original description:
  ---

  The file /etc/dhcp/dhclient-enter-hooks.d/resolved
  provided by systemd (242-7ubuntu3) causes the dhclient failing to get DNS due to systemd-resolved is not run.
  This issue can be reproduced on Ubuntu Eoan:
  ==============================
  root at eoan:~# dhclient -v
  Internet Systems Consortium DHCP Client 4.4.1
  Copyright 2004-2018 Internet Systems Consortium.
  All rights reserved.
  For info, please visit https://www.isc.org/software/dhcp/

  Listening on LPF/ens224/00:0c:29:92:d4:da
  Sending on   LPF/ens224/00:0c:29:92:d4:da
  Listening on LPF/ens192/00:0c:29:92:d4:d0
  Sending on   LPF/ens192/00:0c:29:92:d4:d0
  Listening on LPF/ens160/00:0c:29:92:d4:c6
  Sending on   LPF/ens160/00:0c:29:92:d4:c6
  Sending on   Socket/fallback
  DHCPDISCOVER on ens224 to 255.255.255.255 port 67 interval 3 (xid=0x6d9fb33d)
  DHCPDISCOVER on ens192 to 255.255.255.255 port 67 interval 3 (xid=0xeb8fda26)
  DHCPREQUEST for 192.168.120.4 on ens160 to 255.255.255.255 port 67 (xid=0x6d39545d)
  DHCPACK of 192.168.120.4 from 192.168.120.254 (xid=0x5d54396d)
  RTNETLINK answers: File exists
  d41d8cd98f00b204e9800998ecf8427e  /run/systemd/resolved.conf.d/isc-dhcp-v4-ens160.conf
  md5sum: /run/systemd/resolved.conf.d/isc-dhcp-v6-ens160.conf: No such file or directory
  5025823d750dda1f3f15e306c4a0afce  /run/systemd/resolved.conf.d/isc-dhcp-v4-ens160.conf
  md5sum: /run/systemd/resolved.conf.d/isc-dhcp-v6-ens160.conf: No such file or directory
  bound to 192.168.120.4 -- renewal in 111 seconds.
  root at eoan:~# resolvectl status |grep DNS
  MulticastDNS setting: no
    DNSOverTLS setting: no
        DNSSEC setting: no
      DNSSEC supported: no
            DNSSEC NTA: 10.in-addr.arpa
  MulticastDNS setting: no
    DNSOverTLS setting: no
        DNSSEC setting: no
      DNSSEC supported: no
  MulticastDNS setting: no
    DNSOverTLS setting: no
        DNSSEC setting: no
      DNSSEC supported: no
  MulticastDNS setting: no
    DNSOverTLS setting: no
        DNSSEC setting: no
      DNSSEC supported: no
  ==============================

  Attached please find the patch for this. The output for md5sum in the
  hook file resolv should separate the stdout and stderr so it won't
  compare the wrong data.

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