after rut240 restart l2tp connection works. after 1 minute restart connection lost.
Wed Jun 8 18:38:56 2022 daemon.notice netifd: Interface 'johvi2' is setting up now
Wed Jun 8 18:38:56 2022 daemon.notice xl2tpd[16465]: Connecting to host 213.35.0.0, port 1701
Wed Jun 8 18:38:56 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:38:56 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:38:57 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:38:57 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:38:57 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:38:57 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:38:59 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:38:59 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:38:59 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:38:59 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:01 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:01 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:03 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:03 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:03 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:03 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:06 2022 daemon.debug xl2tpd[16465]: Unable to deliver closing message for tunnel 47757. Destroying anyway.
Wed Jun 8 18:39:06 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:06 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:07 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:07 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:09 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:09 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:11 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:11 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:11 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:11 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:13 2022 daemon.info xl2tpd[16465]: Can not find tunnel 21788 (refhim=0)
Wed Jun 8 18:39:13 2022 daemon.debug xl2tpd[16465]: network_thread: unable to find call or tunnel to handle packet. call = 34045, tunnel = 21788 Dumping.
Wed Jun 8 18:39:17 2022 daemon.info xl2tpd[16465]: Disconnecting from 213.35.0.0, Local: 30587, Remote: 0
Wed Jun 8 18:39:17 2022 daemon.info xl2tpd[16465]: Connection 0 closed to 213.35.10.0, port 1701 (Goodbye!)
Wed Jun 8 18:39:17 2022 daemon.notice netifd: Interface 'johvi2' is now down