Hi Michael, I will open a bug upstream.
Downgrading to network-manager_1.40.12-1~bpo11+1_amd64.deb and libnm0_1.40.12-1~bpo11+1_amd64.deb resolves the issue.
Which logs would be useful? I tried: 1/ Set dns=none 2/ Start dnsmasq with /usr/sbin/dnsmasq --no-resolv --keep-in-foreground \ --no-hosts --bind-interfaces \ --pid-file=/run/NetworkManager/dnsmasq.pid \ --listen-address=127.0.0.1 --cache-size=400 --clear-on-reload \ --conf-file=/dev/null --proxy-dnssec \ --enable-dbus=org.freedesktop.NetworkManager.dnsmasq \ --conf-dir=/etc/NetworkManager/dnsmasq.d \ -d But console output show nothing useful. Thanks, Benoit
