The NM resolv.conf problem was solved by the following commit. You can cherry
pick that.
"""
commit a8ebf23dde9c82dd9d1dcd0fa6de0b4467a0112b
Author: Chen Qi <[email protected]>
Date: Tue Dec 20 02:01:38 2022 -0800
networkmanager: fix /etc/resolv.conf handling
"""
It really does not matter what the resolv.conf mode is in your case because
what NM does is just to send DNS info to resolved.
But if you really want to use the stub mode, a modification to the systemd
recipe is needed to support it, maybe via PACKAGECONFIG. However, I don't think
this is necessary for you unless you happen to make use of some features that
the stub mode provides, which is unrelated to NM.
Regards,
Qi
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
Tom Isaacson
Sent: Monday, April 3, 2023 5:26 AM
To: [email protected]
Subject: [yocto] How do I symbolically link /etc/resolv.conf to
/var/run/systemd/resolve/stub-resolv.conf?
I'm trying to setup a Yocto build using NetworkManager v1.22.16 and systemd
244.5.
https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html#/etc/resolv.conf
recommends I setup /etc/resolv.conf as a symbolic link to
/var/run/systemd/resolve/stub-resolv.conf. Initially it was linked to
/etc/resolv-conf.NetworkManager but I've fixed that by adding a
networkmanager_%.bbappend file with:
ALTERNATIVE_${PN} = ""
But now I find /etc/resolv.conf is a symbolic link to /etc/resolv-conf.systemd,
which is itself a symbolic link to /run/systemd/resolve/resolv.conf. This seems
to come from
systemd_244.5.bb:
http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-core/systemd/systemd_244.5.bb?h=dunfell#n289
if ! ${@bb.utils.contains('PACKAGECONFIG', 'resolved', 'true', 'false',
d)}; then
echo 'L! ${sysconfdir}/resolv.conf - - - -
../run/systemd/resolve/resolv.conf'
>>${D}${exec_prefix}/lib/tmpfiles.d/etc.conf
echo 'd /run/systemd/resolve 0755 root root -'
>>${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf
echo 'f /run/systemd/resolve/resolv.conf 0644 root root'
>>${D}${exec_prefix}/lib/tmpfiles.d/systemd.conf
ln -s ../run/systemd/resolve/resolv.conf
${D}${sysconfdir}/resolv-conf.systemd
else
sed -i -e "s%^L! /etc/resolv.conf.*$%L! /etc/resolv.conf - - -
- ../run/systemd/resolve/resolv.conf%g"
${D}${exec_prefix}/lib/tmpfiles.d/etc.conf
ln -s ../run/systemd/resolve/resolv.conf
${D}${sysconfdir}/resolv-conf.systemd
fi
But there doesn't seem to be any support for making /etc/resolv.conf a symbolic
link to /var/run/systemd/resolve/stub-resolv.conf. Is there any way of doing
this that I'm missing or is this functionality just missing?
(Apologies if this is the wrong forum for this, I'm relatively new to Yocto and
systemd).
Thanks.
--
Tom Isaacson
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