[Twister83]

Удалял как написано соединение, заново создавал, но все также.

Вот логи запуска команды pon dsl-provider

Dec 16 11:05:19 ubuntu pppd[2586]: Plugin rp-pppoe.so loaded.
Dec 16 11:05:19 ubuntu pppd[2586]: RP-PPPoE plugin version 3.8p compiled against pppd 2.4.5
Dec 16 11:05:19 ubuntu pppd[2589]: pppd 2.4.5 started by twister, uid 1000
Dec 16 11:05:19 ubuntu pppd[2589]: PPP session is 17753
Dec 16 11:05:19 ubuntu pppd[2589]: Connected to 00:30:88:00:87:59 via interface eth0
Dec 16 11:05:19 ubuntu NetworkManager[993]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Dec 16 11:05:19 ubuntu NetworkManager[993]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp1, iface: ppp1): no ifupdown configuration found.
Dec 16 11:05:19 ubuntu modem-manager: (net/ppp1): could not get port's parent device
Dec 16 11:05:19 ubuntu pppd[2589]: Using interface ppp1
Dec 16 11:05:19 ubuntu pppd[2589]: Connect: ppp1 <--> eth0
Dec 16 11:05:19 ubuntu pppd[2589]: PAP authentication failed
Dec 16 11:05:25 ubuntu pppd[2589]: Connection terminated.
Dec 16 11:05:25 ubuntu avahi-daemon[1002]: Withdrawing workstation service for ppp1.
Dec 16 11:05:25 ubuntu NetworkManager[993]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Dec 16 11:05:25 ubuntu pppd[2589]: Modem hangup

Из логов видно - PAP authentication failed, не прошел аутентификацию. Почему PAP, в инструкциях пишут что данные сохраняются в chap-secrets.