Та же проблема
Jun 23 01:57:32pptpd[2578]
CTRL: Asked to free call when no call open, not handled well
Jun 23 01:57:32pptpd[2578]
CTRL: Could not free Call ID [call clear]!
Jun 23 01:57:32pptpd[2578]
CTRL: Got call clear request after call manually shutdown - buggy client
Jun 23 01:57:32pptpd[2578]
CTRL: EOF or bad error reading ctrl packet length.
Jun 23 01:57:32pptpd[2578]
CTRL: couldn't read packet header (exit)
Jun 23 01:57:32pptpd[2578]
CTRL: Fatal error reading control message in disconnect sequence
Jun 23 01:57:32pptpd[2578]
CTRL: Client 93.185.28.158 control connection finished
настраивал по инструкции https://help.keenetic.net/hc/ru/articles/213967789-Объединение-двух-локальных-сетей-при-помощи-интернет-центров-используя-встроенное-приложение-Сервер-VPN
две Keenetic Viva
прошивка
v2.08(AANT.0)C2