** Also affects: netplan.io (Ubuntu)
Importance: Undecided
Status: New
** Changed in: initramfs-tools (Ubuntu)
Importance: Undecided => Medium
** Changed in: netplan.io (Ubuntu)
Importance: Undecided => Medium
** Changed in: initramfs-tools (Ubuntu)
Status: New => Triaged
** Changed in: netplan.io (Ubuntu)
Status: New => Triaged
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Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1990542
Title:
initrd starts dhclient on interfaces that are not supposed to get an
IP address
Status in initramfs-tools package in Ubuntu:
Triaged
Status in netplan.io package in Ubuntu:
Triaged
Bug description:
After trying several setups, I think this is a bug. If not - I can't
find how to fix things.
Setup: Ubuntu 22.04, with ubuntu-minimal installed (which depends on
isc-dhcp-client). A network with a bridge interface. This can be
anything, even an old /etc/network/interfaces file will do. For
simplicity, the following netplan setup is used:
network:
version: 2
ethernets:
enp4s0:
wakeonlan: true
dhcp4: no
dhcp6: no
bridges:
br0:
interfaces: [enp4s0]
dhcp4: yes
dhcp6: yes
parameters:
stp: false
forward-delay: 0
What happens:
Starting this machine will, during initrd phase, make dhclient fetch an IP
address for enp4s0. Then netplan takes over and fetches an address for br0. If
both enp4s0 and br0 have the same IP address from the DHCP-server, the machine
will not be reachable.
What should happen:
enp4s0 should not get an IP address, as the netplan-configuration clearly
says.
A workaround is to remove isc-dhcp-client (which, in turn, removes
meta-package ubuntu-minimal) and run update-initramfs -k all -u;
afterwards, the dhclient in initrd is (obviously) not there anymore.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1990542/+subscriptions
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