Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: systemd (Ubuntu)
       Status: New => Confirmed

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  Updating systemd kills network on bionic

Status in linux package in Ubuntu:
Status in systemd package in Ubuntu:

Bug description:
  I do have an ubuntu bionic server installation without a graphical interface. 
The server
  has two active network adapters, both connected to the internet. One is used 
for outgoing
  internet traffic, the other for incoming. The incoming adapter lives on a 
public network segment
  (something like I do have multiple servers within this 

  Typically, I update the server regularly, meaning:

  * ssh to the incoming adapter: ssh
  * apt-get update
  * apt-get upgrade
  * apt-get dist-upgrade
  * apt-get clean
  * reboot

  It used to work ok.

  BUT: Today, "apt-get upgrade" seem to take really long when updating systemd.
  After a could of minutes, I realized that the ssh session became inactive. I 
couldn't type
  into it, I had to abort it via ~. .

  * ssh from the internet to the incoming adapter was not working anymore - ssh
  * ssh via another server within the public network segment worked
      * ssh -> ssh
  * After running "netplan apply" everything was fine again

  Here my netplan configuration (I changed the ip addresses):

    version: 2
    renderer: networkd
        dhcp4: yes
        dhcp4: no
        addresses: []
         - to:
           table: 120
         - from:
           table: 120
         - to:
           table: 120

  Unfortunately, I don't have the console output avalable anymore.
  Shall I provide additional info?

  Best regards, Uli
  ProblemType: Bug
   total 0
   crw-rw---- 1 root audio 116,  1 Jul 20 08:10 seq
   crw-rw---- 1 root audio 116, 33 Jul 20 08:10 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2018-07-14 (5 days ago)
  InstallationMedia: Ubuntu-Server 18.04 LTS "Bionic Beaver" - Release amd64 
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: IBM IBM System x -[794582G]-
  Package: linux (not installed)
   PATH=(custom, no user)
  ProcFB: 0 mgadrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-23-generic 
root=UUID=a41b3020-8359-4fe2-8fc3-1c97011f71ec ro
  ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
   linux-restricted-modules-4.15.0-23-generic N/A
   linux-backports-modules-4.15.0-23-generic  N/A
   linux-firmware                             1.173.1
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic
  Uname: Linux 4.15.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  _MarkForUpload: True 05/07/2014
  dmi.bios.vendor: IBM Corp.
  dmi.bios.version: -[D6E162AUS-1.20]-
  dmi.board.asset.tag: (none) 00D4062
  dmi.board.vendor: IBM
  dmi.board.version: (none)
  dmi.chassis.asset.tag: none
  dmi.chassis.type: 23
  dmi.chassis.vendor: IBM
  dmi.chassis.version: none
dmi:bvnIBMCorp.:bvr-[D6E162AUS-1.20]-:bd05/07/2014:svnIBM:pnIBMSystemx-[794582G]-:pvr00:rvnIBM:rn00D4062:rvr(none):cvnIBM:ct23:cvrnone: System x IBM System x -[794582G]-
  dmi.product.version: 00
  dmi.sys.vendor: IBM

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