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[Launchpad Bug Tracker <1668347@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package systemd - 232-21ubuntu3

---------------
systemd (232-21ubuntu3) zesty; urgency=medium

  [ Martin Pitt ]
  * resolved: Disable DNSSEC by default on stretch and zesty.
    Both Debian stretch and Ubuntu zesty are close to releasing, switch to
    DNSSEC=off by default for those. Users can still turn it back on with
    DNSSEC=allow-downgrade (or even "yes"). (LP: #1682499)

  [ Michael Biebl ]
  * journal: fix up syslog facility when forwarding native messages.
    Native journal messages (_TRANSPORT=journal) typically don't have a
    syslog facility attached to it. As a result when forwarding the
    messages to syslog they ended up with facility 0 (LOG_KERN).
    Apply syslog_fixup_facility() so we use LOG_USER instead. (Closes: #837893)
    (LP: #1682484)

  [ Dimitri John Ledkov ]
  * networkd: cherry-pick support for setting bridge port's priority.
    This is a useful feature/bugfix to improve feature parity of networkd with
    ifupdown. This matches netplan's expectations to be able to set bridge port's
    priorities via networked. This featue is to be used by netplan/MAAS/OpenStack.
    (LP: #1668347)
  * TEST-12: cherry-pick upstream fix for compat with new netcat-openbsd.
    (LP: #1672542)
  * udev.postinst: preserve virtio interfaces names on upgrades, on s390x.
    New udev generates stable interface names on s390x kvm instances, however, upon
    upgrades existing ethX names should be preserved to prevent breaking networking
    and software configurations. (Closes: #860246) (LP: #1682437)

 -- Dimitri John Ledkov <xnox@xxxxxxxxxx>  Thu, 13 Apr 2017 18:10:33
+0100

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

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https://bugs.launchpad.net/bugs/1668347

Title:
  Unable to set bridge_portpriority with networkd

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  New
Status in systemd source package in Yakkety:
  New
Status in systemd source package in Zesty:
  Fix Released

Bug description:
  [Impact]

   * Netplan uses systemd-netword provider to configure all sorts of networking settings
   * However, unlike ifupdown, released versions of systemd do not support setting bridgeport priority, aka
  `brctl setportprio <bridge> <port> <priority>`
   * This prevents full migration from ifupdown to netplan/systemd-networkd for projects like MAAS that do need to configure equal cost; yet differential priority bridge ports.
   * This is proposal to cherrypick this functionality which essentially accepts one more key in the .network units; and send those values via netlink.

  [Test Case]

   * networkd-test.py is executed as part of autopkgtests that
  configures a bridge, and sets various valid bridge port priorities and
  verifies from sysfs that those were correctly set by systemd.

   * Alternativey create a bridge .link unit, and specify .network unit
  for a bridge port and use Priority=4 setting in the [Bridge] section
  in the said unit to modify bridge port priority.

  
  [Regression Potential] 

   * This is an upstream cherrypick of functionality that will be
  included in 234 release. However, since MAAS and netplan target stable
  releases, I would like to cherrypick this functionality all the way
  back to xenial. This almost a feature, rather than a bugfix, but it is
  so small and accompanied by regression testsuite that it is almost a
  tiny bugfix.

  [Other Info]
   
   * Original request to support this feature.

  
  1. root@ubuntu:/run/systemd/network# lsb_release -rd
  Description:    Ubuntu Zesty Zapus (development branch)
  Release:        17.04

  2. root@ubuntu:/run/systemd/network# apt-cache policy systemd
  systemd:
    Installed: 232-18ubuntu1
    Candidate: 232-18ubuntu1
    Version table:
   *** 232-18ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu zesty/main amd64 Packages
          100 /var/lib/dpkg/status

  3. Using a networkd config like this:

  # cat 10-netplan-eth1.network
  [Match]
  MACAddress=52:54:00:12:34:02
  Name=eth1

  [Network]
  Bridge=br0
  LinkLocalAddressing=no
  IPv6AcceptRA=no

  [Bridge]
  Cost=50
  Priority=28

  %  cat /sys/class/net/br0/brif/eth1/priority
  28

  4. %  cat /sys/class/net/br0/brif/eth1/priority
  32

  When using ifupdown and /etc/network/interfaces to configure a bridge
  users are able to specify a bridge port priority:

  auto br0
  iface br0 inet static
    address 192.168.1.1
    bridge_ports eth1 eth2
    bridge_portprio eth1 28
    bridge_portprio eth2 14

  Which results in the bridge hook scripts running:

  brctl setportprio br0 eth1 28

  which is visible via:

  /sys/class/net/br0/brif/eth2/priority

  Note, networkd does not mention PortPriority under netdev Bridge section,
  however, PathCost is mentioned.  It appears networkd is missing an implementation.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: systemd 232-18ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-8.10-generic 4.10.0-rc8
  Uname: Linux 4.10.0-8-generic x86_64
  ApportVersion: 2.20.4-0ubuntu2
  Architecture: amd64
  Date: Mon Feb 27 17:11:32 2017
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-8-generic root=UUID=900c1e3f-f682-4455-949c-ebdbf60ac6f5 ro console=ttyS0
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/01/2014
  dmi.bios.vendor: SeaBIOS
  dmi.bios.version: 1.10.1-1ubuntu1
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-i440fx-zesty
  dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.1-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-zesty:cvnQEMU:ct1:cvrpc-i440fx-zesty:
  dmi.product.name: Standard PC (i440FX + PIIX, 1996)
  dmi.product.version: pc-i440fx-zesty
  dmi.sys.vendor: QEMU

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