Package: network-manager-l2tp Followup-For: Bug #1100104 I managed to get the NM L2TP plugin working fetching the strongswan-charon manually and injecting the charon binary into /usr/lib/ipsec/ by hand.
With latest strongswan with this workaroudn, IPSEC L2TP connection works well. -- System Information: Debian Release: trixie/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 6.12.17-amd64 (SMP w/8 CPU threads; PREEMPT) Kernel taint flags: TAINT_USER Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages network-manager-l2tp depends on: ii libc6 2.41-4 ii libglib2.0-0t64 2.84.0-1 ii libnm0 1.52.0-4 ii libnspr4 2:4.36-1 ii libnss3 2:3.109-1 ii libssl3t64 3.4.1-1 ii network-manager 1.52.0-4 ii ppp 2.5.2-1+1 ii strongswan 6.0.0-2 ii xl2tpd 1.3.18-1+b1 network-manager-l2tp recommends no packages. network-manager-l2tp suggests no packages. -- no debconf information