| 2024-02-29 10:06:47 |
Alberto Contreras |
bug |
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|
added bug |
| 2024-02-29 10:09:26 |
Alberto Contreras |
bug task added |
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netplan.io (Ubuntu) |
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| 2024-02-29 10:09:49 |
Alberto Contreras |
bug task added |
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systemd (Ubuntu) |
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| 2024-02-29 10:10:23 |
Alberto Contreras |
bug task deleted |
systemd (Ubuntu) |
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| 2024-02-29 10:10:31 |
Alberto Contreras |
bug task added |
|
systemd (Ubuntu) |
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| 2024-02-29 10:10:43 |
Alberto Contreras |
bug task deleted |
systemd (Ubuntu) |
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|
| 2024-02-29 10:11:36 |
Alberto Contreras |
bug task added |
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systemd (Ubuntu) |
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| 2024-02-29 10:12:11 |
Alberto Contreras |
nominated for series |
|
Ubuntu Focal |
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| 2024-02-29 10:12:11 |
Alberto Contreras |
bug task added |
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cloud-init (Ubuntu Focal) |
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| 2024-02-29 10:12:11 |
Alberto Contreras |
bug task added |
|
systemd (Ubuntu Focal) |
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| 2024-02-29 10:12:11 |
Alberto Contreras |
bug task added |
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netplan.io (Ubuntu Focal) |
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| 2024-02-29 10:12:19 |
Alberto Contreras |
bug task deleted |
cloud-init (Ubuntu Focal) |
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| 2024-02-29 10:12:23 |
Alberto Contreras |
bug task deleted |
netplan.io (Ubuntu Focal) |
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| 2024-02-29 10:12:43 |
Alberto Contreras |
systemd (Ubuntu): status |
New |
Fix Released |
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| 2024-02-29 10:13:08 |
Alberto Contreras |
cloud-init (Ubuntu): status |
New |
Invalid |
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| 2024-02-29 10:20:46 |
Alberto Contreras |
attachment added |
|
cloud-init.tar.gz https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2055397/+attachment/5750656/+files/cloud-init.tar.gz |
|
| 2024-03-01 15:42:30 |
Ioanna Alifieraki |
bug |
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added subscriber Ioanna Alifieraki |
| 2024-03-18 14:29:29 |
Lukas Märdian |
netplan.io (Ubuntu): status |
New |
Invalid |
|
| 2024-04-05 15:09:29 |
Launchpad Janitor |
merge proposal linked |
|
https://code.launchpad.net/~joalif/ubuntu/+source/systemd/+git/systemd/+merge/463755 |
|
| 2024-04-16 14:50:44 |
Ioanna Alifieraki |
description |
Cloud-init introduced a feature to configure policy routing on AWS EC2 instances with multiple NICs in
https://github.com/canonical/cloud-init/commit/0ca5f31043e2d98eab31a43d9dde9bdaef1435cb targeting v24.1.
Cloud-init generates the following netplan config:
```
$ cat /etc/netplan/50-cloud-init.yaml
network:
ethernets:
ens5:
dhcp4: true
dhcp4-overrides: &id001
route-metric: 100
dhcp6: true
dhcp6-overrides: *id001
match:
macaddress: 0a:c8:ab:90:c2:fb
set-name: ens5
ens6:
dhcp4: true
dhcp4-overrides:
route-metric: 200
use-routes: true
dhcp6: false
match:
macaddress: 0a:c6:55:a1:dc:3b
routes:
- table: 101
to: 0.0.0.0/0
via: 192.168.0.1
- table: 101
to: 192.168.0.0/20
routing-policy:
- from: 192.168.10.212
table: 101
set-name: ens6
version: 2
```
Which renders the following systemd-networkd config files:
```
$ cat 10-netplan-ens5.link
[Match]
MACAddress=0a:c8:ab:90:c2:fb
[Link]
Name=ens5
WakeOnLan=off
$ cat 10-netplan-ens5.network
[Match]
MACAddress=0a:c8:ab:90:c2:fb
Name=ens5
[Network]
DHCP=yes
LinkLocalAddressing=ipv6
[DHCP]
RouteMetric=100
UseMTU=true
$ cat 10-netplan-ens6.link
[Match]
MACAddress=0a:c6:55:a1:dc:3b
[Link]
Name=ens6
WakeOnLan=off
$ cat 10-netplan-ens6.network
[Match]
MACAddress=0a:c6:55:a1:dc:3b
Name=ens6
[Network]
DHCP=ipv4
LinkLocalAddressing=ipv6
[Route]
Destination=0.0.0.0/0
Gateway=192.168.0.1
Table=101
[Route]
Destination=192.168.0.0/20
Scope=link
Table=101
[RoutingPolicyRule]
From=192.168.10.212
Table=101
[DHCP]
RouteMetric=200
UseMTU=true
```
Which configures the instance with the following state in Ubuntu Focal:
```
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
link/ether 0a:c8:ab:90:c2:fb brd ff:ff:ff:ff:ff:ff
inet 192.168.12.94/20 brd 192.168.15.255 scope global dynamic ens5
valid_lft 2087sec preferred_lft 2087sec
inet6 2a05:d012:ea0:c500:6d12:2b20:5fef:a502/128 scope global dynamic noprefixroute
valid_lft 440sec preferred_lft 130sec
inet6 fe80::8c8:abff:fe90:c2fb/64 scope link
valid_lft forever preferred_lft forever
3: ens6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
link/ether 0a:c6:55:a1:dc:3b brd ff:ff:ff:ff:ff:ff
inet 192.168.10.212/20 brd 192.168.15.255 scope global dynamic ens6
valid_lft 2083sec preferred_lft 2083sec
inet6 fe80::8c6:55ff:fea1:dc3b/64 scope link
valid_lft forever preferred_lft forever
$ ip route show
default via 192.168.0.1 dev ens5 proto dhcp src 192.168.12.94 metric 100
default via 192.168.0.1 dev ens6 proto dhcp src 192.168.10.212 metric 200
192.168.0.0/20 dev ens5 proto kernel scope link src 192.168.12.94
192.168.0.0/20 dev ens6 proto kernel scope link src 192.168.10.212
192.168.0.1 dev ens5 proto dhcp scope link src 192.168.12.94 metric 100
192.168.0.1 dev ens6 proto dhcp scope link src 192.168.10.212 metric 200
$ ip rule show
0: from all lookup local
0: from 192.168.10.212 lookup 101
32766: from all lookup main
32767: from all lookup default
$ ip route show table 101
default via 192.168.0.1 dev ens6 proto static onlink
192.168.0.0/20 dev ens6 proto static scope link
```
The issue here is that the instance is not reachable from the same subnet via the private ipv4 of the primary NIC,
packets are routed to egress via ens6 and dropped.
The cause is that interface metrics are not applied to local subnet routes with systemd 245 (245.4-4ubuntu3.23).
On newer systemd versions, as in Jammy, the metrics are correctly applied.
Correcting them manually fixes the issue in Focal.
Expected main route table:
default via 192.168.0.1 dev ens5 proto dhcp src 192.168.12.94 metric 100
default via 192.168.0.1 dev ens6 proto dhcp src 192.168.10.212 metric 200
192.168.0.0/20 dev ens5 proto kernel scope link src 192.168.12.94 metric 100
192.168.0.0/20 dev ens6 proto kernel scope link src 192.168.10.212 metric 200
192.168.0.1 dev ens5 proto dhcp scope link src 192.168.12.94 metric 100
192.168.0.1 dev ens6 proto dhcp scope link src 192.168.10.212 metric 200
It looks like the upstream systemd issue and PR fixing this problem are:
https://github.com/systemd/systemd/issues/928
https://github.com/systemd/systemd/pull/19344 |
[SRU TEMPLATE]
[DESCRIPTION]
Cloud-init introduced a feature to configure policy routing on AWS EC2 instances with multiple NICs in
https://github.com/canonical/cloud-init/commit/0ca5f31043e2d98eab31a43d9dde9bdaef1435cb targeting v24.1.
Cloud-init generates the following netplan config:
```
$ cat /etc/netplan/50-cloud-init.yaml
network:
ethernets:
ens5:
dhcp4: true
dhcp4-overrides: &id001
route-metric: 100
dhcp6: true
dhcp6-overrides: *id001
match:
macaddress: 0a:c8:ab:90:c2:fb
set-name: ens5
ens6:
dhcp4: true
dhcp4-overrides:
route-metric: 200
use-routes: true
dhcp6: false
match:
macaddress: 0a:c6:55:a1:dc:3b
routes:
- table: 101
to: 0.0.0.0/0
via: 192.168.0.1
- table: 101
to: 192.168.0.0/20
routing-policy:
- from: 192.168.10.212
table: 101
set-name: ens6
version: 2
```
Which renders the following systemd-networkd config files:
```
$ cat 10-netplan-ens5.link
[Match]
MACAddress=0a:c8:ab:90:c2:fb
[Link]
Name=ens5
WakeOnLan=off
$ cat 10-netplan-ens5.network
[Match]
MACAddress=0a:c8:ab:90:c2:fb
Name=ens5
[Network]
DHCP=yes
LinkLocalAddressing=ipv6
[DHCP]
RouteMetric=100
UseMTU=true
$ cat 10-netplan-ens6.link
[Match]
MACAddress=0a:c6:55:a1:dc:3b
[Link]
Name=ens6
WakeOnLan=off
$ cat 10-netplan-ens6.network
[Match]
MACAddress=0a:c6:55:a1:dc:3b
Name=ens6
[Network]
DHCP=ipv4
LinkLocalAddressing=ipv6
[Route]
Destination=0.0.0.0/0
Gateway=192.168.0.1
Table=101
[Route]
Destination=192.168.0.0/20
Scope=link
Table=101
[RoutingPolicyRule]
From=192.168.10.212
Table=101
[DHCP]
RouteMetric=200
UseMTU=true
```
Which configures the instance with the following state in Ubuntu Focal:
```
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
link/ether 0a:c8:ab:90:c2:fb brd ff:ff:ff:ff:ff:ff
inet 192.168.12.94/20 brd 192.168.15.255 scope global dynamic ens5
valid_lft 2087sec preferred_lft 2087sec
inet6 2a05:d012:ea0:c500:6d12:2b20:5fef:a502/128 scope global dynamic noprefixroute
valid_lft 440sec preferred_lft 130sec
inet6 fe80::8c8:abff:fe90:c2fb/64 scope link
valid_lft forever preferred_lft forever
3: ens6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
link/ether 0a:c6:55:a1:dc:3b brd ff:ff:ff:ff:ff:ff
inet 192.168.10.212/20 brd 192.168.15.255 scope global dynamic ens6
valid_lft 2083sec preferred_lft 2083sec
inet6 fe80::8c6:55ff:fea1:dc3b/64 scope link
valid_lft forever preferred_lft forever
$ ip route show
default via 192.168.0.1 dev ens5 proto dhcp src 192.168.12.94 metric 100
default via 192.168.0.1 dev ens6 proto dhcp src 192.168.10.212 metric 200
192.168.0.0/20 dev ens5 proto kernel scope link src 192.168.12.94
192.168.0.0/20 dev ens6 proto kernel scope link src 192.168.10.212
192.168.0.1 dev ens5 proto dhcp scope link src 192.168.12.94 metric 100
192.168.0.1 dev ens6 proto dhcp scope link src 192.168.10.212 metric 200
$ ip rule show
0: from all lookup local
0: from 192.168.10.212 lookup 101
32766: from all lookup main
32767: from all lookup default
$ ip route show table 101
default via 192.168.0.1 dev ens6 proto static onlink
192.168.0.0/20 dev ens6 proto static scope link
```
The issue here is that the instance is not reachable from the same subnet via the private ipv4 of the primary NIC,
packets are routed to egress via ens6 and dropped.
The cause is that interface metrics are not applied to local subnet routes with systemd 245 (245.4-4ubuntu3.23).
On newer systemd versions, as in Jammy, the metrics are correctly applied.
Correcting them manually fixes the issue in Focal.
Expected main route table:
default via 192.168.0.1 dev ens5 proto dhcp src 192.168.12.94 metric 100
default via 192.168.0.1 dev ens6 proto dhcp src 192.168.10.212 metric 200
192.168.0.0/20 dev ens5 proto kernel scope link src 192.168.12.94 metric 100
192.168.0.0/20 dev ens6 proto kernel scope link src 192.168.10.212 metric 200
192.168.0.1 dev ens5 proto dhcp scope link src 192.168.12.94 metric 100
192.168.0.1 dev ens6 proto dhcp scope link src 192.168.10.212 metric 200
It looks like the upstream systemd issue and PR fixing this problem are:
https://github.com/systemd/systemd/issues/928
https://github.com/systemd/systemd/pull/19344
[TESTING]
As described above.
[REGRESSION POTENTIAL]
The backport targets Focal.
The fixing patches are touching network related code, regression potential would regard networking part of systemd,
especially in address configuration.
In particualar:
* https://github.com/systemd/systemd/commit/aa550d2a51b025681ff8399e597338d35f540195
This patch adds sd_netlink_message_append_s* functions and types without modifying existing code.
* https://github.com/systemd/systemd/commit/0e7bb99ff919bf8e6030ab7c3c178b87caf166a2
This one just adds missing address types
* https://github.com/systemd/systemd/commit/c4ff0629dd450a40c5733b759eda08e6a032fae3
This one is adds the RouteMetric option for [Address]. Adds code to address_configure() function.
* https://github.com/systemd/systemd/commit/415deef9c3e97211c862f39aceabf8e1f1485a41#
This one adds the RouteMetric option to [DHCPv4]
[OTHER]
The upstream patches fixing this issue are the following :
https://github.com/systemd/systemd/commit/aa550d2a51b025681ff8399e597338d35f540195
https://github.com/systemd/systemd/commit/0e7bb99ff919bf8e6030ab7c3c178b87caf166a2
https://github.com/systemd/systemd/commit/c4ff0629dd450a40c5733b759eda08e6a032fae3
https://github.com/systemd/systemd/commit/415deef9c3e97211c862f39aceabf8e1f1485a41
They originate in PR [1] and backported for focal in MR [2].
There's also a test package in [3].
[1] https://github.com/systemd/systemd/pull/19344
[2] https://code.launchpad.net/~joalif/ubuntu/+source/systemd/+git/systemd/+ref/lp2055397
[3] https://launchpad.net/~joalif/+archive/ubuntu/systemd-focal |
|
| 2024-07-05 10:19:23 |
Timo Aaltonen |
systemd (Ubuntu Focal): status |
New |
Fix Committed |
|
| 2024-07-05 10:19:25 |
Timo Aaltonen |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2024-07-05 10:19:27 |
Timo Aaltonen |
bug |
|
|
added subscriber SRU Verification |
| 2024-07-05 10:19:29 |
Timo Aaltonen |
tags |
|
verification-needed verification-needed-focal |
|
| 2024-07-08 13:18:05 |
Alberto Contreras |
attachment added |
|
lp2055397.txt https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/2055397/+attachment/5795465/+files/lp2055397.txt |
|
| 2024-07-18 14:03:43 |
Ioanna Alifieraki |
tags |
verification-needed verification-needed-focal |
verification-done verification-done-focal |
|
