[Bug 1905472] Re: Something starts dhcclient for every intrface on boot

[Dimitri John Ledkov]

ubuntu-core-initramfs project is not used on Ubuntu 20.04 LTS servers
and desktops.

However I also don't think this is caused by initramfs.

It would help for you to check your NetworkManager configuration,
netplan configuration and ifupdwon configurations.

** Project changed: ubuntu-core-initramfs => initramfs-tools (Ubuntu)

** Changed in: initramfs-tools (Ubuntu)
       Status: New => Incomplete

** Also affects: ifupdown (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: ifupdown (Ubuntu)
       Status: New => Incomplete

** Also affects: netplan.io (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: netplan.io (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to initramfs-tools in Ubuntu.
Matching subscriptions: foundations-bugs
https://bugs.launchpad.net/bugs/1905472

Title:
  Something starts dhcclient for every intrface on boot

Status in ifupdown package in Ubuntu:
  Incomplete
Status in initramfs-tools package in Ubuntu:
  Incomplete
Status in netplan.io package in Ubuntu:
  Incomplete

Bug description:
  After upgrade frpm 18LTS to 20LTS I've lost the network.

  Network is managed by ifupdown
  Netplan is not installed
  Network manger is disabled (masked)

  Yet, at boot, SOMETHING starts dhclient for every network interface.
  This has disastrous results - dhcp request succeeds on physical
  interface that is a base for a vlan-based interface, causing real dhcp
  request on to fail on vlan interface.

  Expected behavior - dhclient starts only for interfaces marked as dhcp
  in /etc/network/interfaces .

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: isc-dhcp-client 4.4.1-2.1ubuntu5
  ProcVersionSignature: Ubuntu 5.8.0-29.31~20.04.1-generic 5.8.14
  Uname: Linux 5.8.0-29-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.12
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Wed Nov 25 00:07:45 2020
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1905472/+subscriptions