xl2tpd无法start，Failed to start Level 2 Tunnel Protocol Daemon (L2TP)

[lensory]

Environment

Please complete the following information:

• AlmaLinux 8.6
• zjunet version: 0.3.3 (0.3.3-4)
• xl2tpd version: xl2tpd-1.3.15
• wired
• on server

其他情况：
安装时候的warning：Invalid configuration value: failovermethod=priority in /etc/yum.repos.d/qsc.repo; Configuration: OptionBinding with id "failovermethod" does not exist
Transaction的时候的error
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Running scriptlet: ppp-2.4.7-26.el8_1.x86_64 1/4
Installing : ppp-2.4.7-26.el8_1.x86_64 1/4
Running scriptlet: ppp-2.4.7-26.el8_1.x86_64 1/4
Installing : kernel-modules-extra-4.18.0-372.32.1.el8_6.x86_64 2/4
Running scriptlet: kernel-modules-extra-4.18.0-372.32.1.el8_6.x86_64 2/4
Installing : xl2tpd-1.3.15-1.el8.x86_64 3/4
Running scriptlet: xl2tpd-1.3.15-1.el8.x86_64 3/4
Installing : zjunet-0.3.3-4.noarch 4/4
Running scriptlet: zjunet-0.3.3-4.noarch 4/4
error: can't create transaction lock on /var/lib/rpm/.rpm.lock (Resource temporarily unavailable)
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-QSC-COMP66: key 1 import failed.
Added yum repo.

Bug description

在成功安装之后，尝试添加user。

Output

输入
zjunet user add
出现xl2tpd无法启动的问题
username XXXXXXXX
password: XXX
[INFO] Disconnect VPN
[INFO] Try to start xl2tpd if not
[INFO] Starting xl2tpd
Job for xl2tpd.service failed because the control process exited with error code.
See "systemctl status xl2tpd.service" and "journalctl -xe" for details.
Fail to start xl2tpd
[INFO] try disconnecting zju-l2tp-xxxxxXXX
[INFO] xl2tpd-control done
xl2tpd-control: Unable to open /var/run/xl2tpd/l2tp-control for writing: No such file or directory
[INFO] Setting up ip route.
default via 10.72.126.1 dev enp8s0
default via 10.72.126.1 dev enp8s0 proto static metric 100
10.72.126.0/24 dev enp8s0 proto kernel scope link src 10.72.126.187 metric 100
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
[INFO] Write to xl2tpd.conf
/usr/lib/zjunet/xl2tpd.sh: line 87: /etc/ppp/peers/zju-l2tp-XXXX: No such file or directory
chmod: cannot access '/etc/ppp/peers/zju-l2tp-XXXX': No such file or directory
[INFO] Restart xl2tpd
[INFO] Stopping xl2tpd
[INFO] Starting xl2tpd
Job for xl2tpd.service failed because the control process exited with error code.
See "systemctl status xl2tpd.service" and "journalctl -xe" for details.
Fail to start xl2tpd

根据提示
systemctl status xl2tpd
输出如下：
● xl2tpd.service - Level 2 Tunnel Protocol Daemon (L2TP)
Loaded: loaded (/usr/lib/systemd/system/xl2tpd.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Tue 2022-11-01 07:39:24 EDT; 1min 11s ago
Process: 252195 ExecStartPre=/sbin/modprobe -q l2tp_ppp (code=exited, status=1/FAILURE)

Nov 01 07:39:24 Saturn systemd[1]: Starting Level 2 Tunnel Protocol Daemon (L2TP)...
Nov 01 07:39:24 Saturn systemd[1]: xl2tpd.service: Control process exited, code=exited status=1
Nov 01 07:39:24 Saturn systemd[1]: xl2tpd.service: Failed with result 'exit-code'.
Nov 01 07:39:24 Saturn systemd[1]: Failed to start Level 2 Tunnel Protocol Daemon (L2TP).

顺便试了下ExecStartPre中的命令，去掉quiet选项，输出如下：
modprobe l2tp_ppp

modprobe: FATAL: Module l2tp_ppp not found in directory /lib/modules/4.18.0-372.9.1.el8.x86_64

[utcao]

我的ubuntu 22,04 也遇到过。建议重新安装一遍。 sudo apt reinstall zjunet 或者相关的依赖包。然后遵循 zjunet user add and zjunet vpn -c 即可。