without mentioned workaround by unmanaged-devices=... i see
ls -1 /run/NetworkManager/system-connections/
lxcbr0.nmconnection
mpqemubr0.nmconnection
netplan-enp1s0f0.nmconnection
netplan-mpqemubr0.nmconnection
netplan-NM-2a2a93e2-e395-4291-8c71-b4c90d5b8211.nmconnection
netplan-NM-649ca4e6-0058-4ca4-8b13-b2b386326d64.nmconnection
netplan-NM-97832244-6366-4ff9-bff3-af8a210e15b3.nmconnection
netplan-NM-9fe9febf-03de-4534-b27d-e4f309760a10.nmconnection
netplan-NM-c2369cb9-bb6b-4c59-86f4-26a648a54c16.nmconnection
netplan-NM-f2b0d95a-f3f9-48e2-9687-b1d7b3b41500.nmconnection
As you can see there are 2 entries for mpqemubr0
mpqemubr0.nmconnection
netplan-mpqemubr0.nmconnection
sdiff /run/NetworkManager/system-connections/netplan-mpqemubr0.nmconnection
/run/NetworkManager/system-connections/mpqemubr0.nmconnection
[connection] [connection]
id=mpqemubr0 id=mpqemubr0
>
uuid=575a921c-63fb-43ab-841c-641022d4735e
type=bridge type=bridge
uuid=fa76edcc-f9a6-43ce-85fd-0b5f5af84605 <
interface-name=mpqemubr0 <
#Netplan: passthrough setting <
autoconnect=false
autoconnect=false
#Netplan: passthrough setting |
interface-name=mpqemubr0
timestamp=1732778875 |
timestamp=1736404934
>
> [ethernet]
[bridge] [bridge]
stp=false stp=false
[ipv4] [ipv4]
method=manual <
address1=10.177.15.1/24
address1=10.177.15.1/24
#Netplan: passthrough setting | method=manual
ignore-auto-routes=true <
[ipv6] [ipv6]
#Netplan: passthrough override <
method=disabled <
#Netplan: passthrough setting <
addr-gen-mode=default
addr-gen-mode=default
| method=disabled
[ethernet] <
[proxy] [proxy]
>
> [.nmmeta]
>
nm-generated=true
> volatile=true
> external=true
As you can see - both have
id=mpqemubr0
So it is maybe the Point Danilo Egea Gondolfo mentioned.
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https://bugs.launchpad.net/bugs/2089930
Title:
NetworManager crashes when modifing connection (ipv4.ignore-auto-
routes yes)
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