Another bug with the new backend is that the route-metric isn't properly
applied. Example:
1) This works fine, using the original backend:
$ cat /etc/NetworkManager/system-connections/10.161.254.11.nmconnection
[connection]
id=10.161.254.11
uuid=21161f75-8d8a-46a8-a873-3532e2415e2a
type=ethernet
interface-name=eno1
timestamp=1697868305
[ethernet]
[ipv4]
address1=10.161.254.11/24,10.161.254.1
address2=192.168.254.11/24
route-metric=90
dns=127.0.0.1;
may-fail=false
method=manual
[ipv6]
addr-gen-mode=stable-privacy
ip6-privacy=0
may-fail=false
method=link-local
[proxy]
To verify it's fine:
$ ip r
default via 10.161.254.1 dev eno1 proto static metric 90
2) Now we just re-set the name of the connection to toggle the conversion to
the NM-backend, and things break, the metric is now 103 instead of 90:
$ nmcli con modify 10.161.254.11 con-name 10.161.254.11
$ nmcli con up 10.161.254.11
$ ip r
default via 10.161.254.1 dev eno1 proto static metric 103
$ cat /etc/netplan/90-NM-21161f75-8d8a-46a8-a873-3532e2415e2a.yaml
network:
version: 2
ethernets:
NM-21161f75-8d8a-46a8-a873-3532e2415e2a:
renderer: NetworkManager
match:
name: "eno1"
addresses:
- "10.161.254.11/24"
- "192.168.254.11/24"
nameservers:
addresses:
- 127.0.0.1
dhcp4-overrides:
route-metric: 90
ipv6-address-generation: "stable-privacy"
wakeonlan: true
networkmanager:
uuid: "21161f75-8d8a-46a8-a873-3532e2415e2a"
name: "10.161.254.11"
passthrough:
connection.timestamp: "1735895691"
ethernet._: ""
ipv4.address1: "10.161.254.11/24,10.161.254.1"
ipv4.may-fail: "false"
ipv4.method: "manual"
ipv6.may-fail: "false"
ipv6.method: "link-local"
proxy._: ""
There are several other similar bugs that are caused by attributes that
don't map 1-to-1 between netplan and network-manager. Please allow us to
use the original network manager storage backend without recompiling the
sources, thank you.
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https://bugs.launchpad.net/bugs/2041491
Title:
Provide an option to avoid the yaml NM backend
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