| 2018-05-17 00:08:00 |
Steve Langasek |
bug |
|
|
added bug |
| 2018-05-17 12:25:01 |
Francis Ginther |
tags |
|
id-5afcc87c960c0f29bc4856ad |
|
| 2018-06-11 16:29:44 |
Steve Langasek |
netplan: status |
New |
In Progress |
|
| 2018-06-11 16:29:47 |
Steve Langasek |
netplan: importance |
Undecided |
Medium |
|
| 2018-07-16 12:12:37 |
Mathieu Trudel-Lapierre |
bug task added |
|
netplan.io (Ubuntu) |
|
| 2018-07-16 18:28:07 |
Launchpad Janitor |
netplan.io (Ubuntu): status |
New |
Fix Released |
|
| 2018-07-24 10:25:01 |
mkurz |
bug |
|
|
added subscriber mkurz |
| 2018-09-27 20:50:33 |
Mathieu Trudel-Lapierre |
description |
Per https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1717983, link-local address support was previously handled via integration between avahi-autoipd and dhclient. systemd-networkd does not invoke dhclient. It also has direct support for configuring link-local ipv4 addresses. But this support is not enabled by default.
It should be possible for a system configured via netplan to make use of link-local ipv4 addresses, without needing to configure systemd-networkd directly.
Historically we do not turn on link-local ipv4 support automatically on servers (avahi-autoipd not installed by default), and we use link-local addresses only as a fallback when dhcp gives no response. So this should likely not be enabled by default, but instead be exposed as an additional configuration option in netplan yaml. |
[Impact]
Ubuntu users who make use of IPv4 link-local addresses.
[Test case]
1) Add 'link-local: [ ipv4 ]' to the netplan configuration.
2) Run 'sudo netplan apply'
[Regression Potential]
Enabling link local means additional addresses are available on the system, usually in the form "169.254.XXX.XXX". This is, in effect, a potential security issue if it is enabled on untrusted networks (it gives systems a fairly well known, discoverable IP address as attack surface). This is not considered a regression from previous releases of Ubuntu given that avahi has been available on desktop, with the same potential issue. The availability of extra addresses might however mean that the system is considered online or reachable via the additonal addresses earlier than previously possible, which may lead to confusion for the user.
---
Per https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1717983, link-local address support was previously handled via integration between avahi-autoipd and dhclient. systemd-networkd does not invoke dhclient. It also has direct support for configuring link-local ipv4 addresses. But this support is not enabled by default.
It should be possible for a system configured via netplan to make use of link-local ipv4 addresses, without needing to configure systemd-networkd directly.
Historically we do not turn on link-local ipv4 support automatically on servers (avahi-autoipd not installed by default), and we use link-local addresses only as a fallback when dhcp gives no response. So this should likely not be enabled by default, but instead be exposed as an additional configuration option in netplan yaml. |
|
| 2018-09-27 23:58:26 |
Mathieu Trudel-Lapierre |
netplan: status |
In Progress |
Fix Released |
|
| 2018-09-28 16:36:02 |
Łukasz Zemczak |
netplan.io (Ubuntu Bionic): status |
New |
Fix Committed |
|
| 2018-09-28 16:36:03 |
Łukasz Zemczak |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2018-09-28 16:36:05 |
Łukasz Zemczak |
bug |
|
|
added subscriber SRU Verification |
| 2018-09-28 16:36:10 |
Łukasz Zemczak |
tags |
id-5afcc87c960c0f29bc4856ad |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
|
| 2018-10-09 15:09:50 |
Mathieu Trudel-Lapierre |
tags |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
id-5afcc87c960c0f29bc4856ad verification-done-bionic |
|
| 2018-10-23 22:01:24 |
Brian Murray |
tags |
id-5afcc87c960c0f29bc4856ad verification-done-bionic |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
|
| 2018-10-31 18:28:47 |
Mathieu Trudel-Lapierre |
tags |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
id-5afcc87c960c0f29bc4856ad verification-done-bionic |
|
| 2018-11-06 18:13:46 |
Launchpad Janitor |
netplan.io (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
| 2018-11-06 18:15:11 |
Brian Murray |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2018-11-08 17:05:31 |
Steve Langasek |
netplan.io (Ubuntu Bionic): status |
Fix Released |
Fix Committed |
|
| 2018-11-26 19:25:09 |
Adam Conrad |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2018-11-26 19:25:14 |
Adam Conrad |
tags |
id-5afcc87c960c0f29bc4856ad verification-done-bionic |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
|
| 2018-12-04 15:52:00 |
Mathieu Trudel-Lapierre |
tags |
id-5afcc87c960c0f29bc4856ad verification-needed verification-needed-bionic |
id-5afcc87c960c0f29bc4856ad verification-done-bionic |
|
| 2018-12-05 18:47:48 |
Launchpad Janitor |
netplan.io (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
