ER8411 l2tp
ER8411 l2tp
Hello, I'm asking for your help, I hope I can get some advice. I need to set up a connection to the l2tp server. But judging by the logs, the tunnel is not being formed. The ER8411 is located behind the NAT, and all ports and protocols are routed to the ER8411 from the main router. I tried to update the firmware, but it didn't give any results. Write to me if additional information is required, I will send everything.
| 36 | 2026-02-21 11:57:07 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 37 | 2026-02-21 11:56:59 | IPsec | WARNING | WAN/LAN4: Phase 1 of IKE negotiation failed. (Peers=172.16.1.2<->*.*.*.*, Error=NO_PROPOSAL_CHOSEN[14]) |
| 38 | 2026-02-21 11:56:59 | IPsec | WARNING | WAN/LAN4: Phase 1 of IKE negotiation failed. (Peers=172.16.1.2<->*.*.*.*, Error=UNSUPPORTED_CRITICAL_PAYLOAD or INVALID_PAYLOAD_TYPE[1]) |
| 39 | 2026-02-21 11:56:59 | IPsec | NOTICE | WAN/LAN4: IKE negotiation began in responder mode. (Mode=Main Mode, Peers=172.16.1.2<->*.*.*.*) |
| 40 | 2026-02-21 11:56:59 | IPsec | NOTICE | WAN/LAN4: IKE negotiation began in initiator mode. (Mode=Main Mode, Peers=172.16.1.2<->*.*.*.*) |
| 41 | 2026-02-21 11:56:57 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 42 | 2026-02-21 11:56:49 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 43 | 2026-02-21 11:56:45 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 44 | 2026-02-21 11:56:42 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 45 | 2026-02-21 11:56:42 | IPsec | NOTICE | WAN/LAN4: Phase 2 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 46 | 2026-02-21 11:56:41 | IPsec | NOTICE | WAN/LAN4: Phase 1 of IKE negotiation succeeded. (Peers=172.16.1.2<->*.*.*.*) |
| 47 | 2026-02-21 11:56:41 | IPsec | NOTICE | WAN/LAN4: IKE negotiation began in responder mode. (Mode=Main Mode, Peers=172.16.1.2<->*.*.*.*) |
