On Tue, 2023-08-08 at 12:13 -0400, Bruce Ashfield wrote:
> On Tue, Aug 8, 2023 at 11:35 AM Chen Qi via lists.openembedded.org
> <Qi.Chen=windriver....@lists.openembedded.org> wrote:
> >
> > I found some clue, but not the root cause yet.
> > The eth0 is renamed to enp0s2 by 80-net-setup-link.rules udev rule in
> > systemd. And the connman.conf only blacklists eth0.
> >
> > The related log is:
> > Aug 08 15:18:16 qemux86-64 kernel[213]: [ 1.727332] virtio_net virtio0
> > enp0s2: renamed from eth0 (while UP)
> >
> > The systemd udev configuration file is:
> > root@qemux86-64:~# cat /lib/udev/rules.d/80-net-setup-link.rules
> > # do not edit this file, it will be overwritten on update
> > SUBSYSTEM!="net", GOTO="net_setup_link_end"
> > IMPORT{builtin}="path_id"
> > ACTION=="remove", GOTO="net_setup_link_end"
> > IMPORT{builtin}="net_setup_link"
> > NAME=="", ENV{ID_NET_NAME}!="", NAME="$env{ID_NET_NAME}"
> > LABEL="net_setup_link_end"
> >
> > And the connman configuration file is:
> > root@qemux86-64:~# cat /etc/connman/main.conf
> > [General]
> > NetworkInterfaceBlacklist = eth0
> >
> > In contrary, with 6.1 kernel, the renaming failed with the following
> > message:
> > Aug 08 15:29:58 qemux86-64 (udev-worker)[206]: enp0s2: Network interface
> > 'eth0' is already up, cannot rename to 'enp0s2'.
> >
> > Maybe some changes in new kernel allows renaming network interface while
> > it's up?
>
> This brings back a memory of something I ran into on a build server
> when upgrading to a "newer" 6.2 kernel,
>
> I had to disable interface renaming in order to get a consistent
> network configuration, and did that via "net.ifnames=0" on the kernel
> command line.
Thanks, Qi and Bruce, this all starts to make more sense now.
I've sent a patch adding "net.ifnames=0" to the two places we need it
to fix runqemu usage which fixed the issue in my local testing.
Cheers,
Richard
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#185674):
https://lists.openembedded.org/g/openembedded-core/message/185674
Mute This Topic: https://lists.openembedded.org/mt/100620069/21656
Group Owner: openembedded-core+ow...@lists.openembedded.org
Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub
[arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
