Hello.
My ISP provides the ZTE F609 v9.0 ONT. I've configured the device to bridge mode (VLAN is enabled and set to 2025). The LAN port is bound, DHCP is disabled, and the PPPoE profile has been deleted.
I then connect the LAN to the WAN port of my TP-Link AX23 running OpenWrt 23.05 stable. I delete every interface except br-lan, add a new interface with PPPoE protocol, WAN device, correct credential, and configure the MTU to 1492, mirroring the value on the ONT.
However, despite numerous reboots, interface restarts and waits, the PPPoE connection remains unsuccessful. The error message displayed is:
Error: Unknown error (USER_REQUEST)
Error: Connection attempt failed
Error: Unknown error (AUTH_TOPEER_FAILED)
Here's part of the logs (haven't set the timedate):
Wed Nov 15 02:57:23 2023 daemon.info pppd[12060]: Plugin pppoe.so loaded.
Wed Nov 15 02:57:23 2023 daemon.info pppd[12060]: PPPoE plugin from pppd 2.4.9
Wed Nov 15 02:57:23 2023 daemon.notice pppd[12060]: pppd 2.4.9 started by root, uid 0
Wed Nov 15 02:57:23 2023 daemon.err pppd[12060]: Interface wan has MTU of 1492 -- should be at least 1500.
Wed Nov 15 02:57:23 2023 daemon.err pppd[12060]: This may cause serious connection problems.
Wed Nov 15 02:57:24 2023 daemon.warn odhcpd[1546]: No default route present, overriding ra_lifetime!
Wed Nov 15 02:57:29 2023 daemon.notice hostapd: phy0-ap1: AP-STA-DISCONNECTED [MAC ADDRESS]
Wed Nov 15 02:57:29 2023 daemon.info hostapd: phy0-ap1: STA [MAC ADDRESS] IEEE 802.11: disassociated
Wed Nov 15 02:57:30 2023 daemon.info hostapd: phy0-ap1: STA [MAC ADDRESS] IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Wed Nov 15 02:57:32 2023 daemon.info hostapd: phy0-ap1: STA IEEE 802.11: authenticated
Wed Nov 15 02:57:32 2023 daemon.info hostapd: phy0-ap1: STA [MAC ADDRESS] IEEE 802.11: associated (aid 13)
Wed Nov 15 02:57:32 2023 daemon.notice hostapd: phy0-ap1: AP-STA-CONNECTED [MAC ADDRESS] auth_alg=open
Wed Nov 15 02:57:32 2023 daemon.info hostapd: phy0-ap1: STA [MAC ADDRESS] WPA: pairwise key handshake completed (RSN)
Wed Nov 15 02:57:32 2023 daemon.notice hostapd: phy0-ap1: EAPOL-4WAY-HS-COMPLETED [MAC ADDRESS]
Wed Nov 15 02:57:38 2023 daemon.warn pppd[12060]: Timeout waiting for PADO packets
Wed Nov 15 02:57:38 2023 daemon.err pppd[12060]: Unable to complete PPPoE Discovery
Tue Nov 14 19:58:03 2023 daemon.notice netifd: Interface 'wan' is now down
Tue Nov 14 19:58:03 2023 daemon.notice netifd: Interface 'wan' is setting up now
Tue Nov 14 19:58:04 2023 daemon.info pppd[12872]: Plugin pppoe.so loaded.
Tue Nov 14 19:58:04 2023 daemon.info pppd[12872]: PPPoE plugin from pppd 2.4.9
Tue Nov 14 19:58:04 2023 daemon.notice pppd[12872]: pppd 2.4.9 started by root, uid 0
Tue Nov 14 19:58:04 2023 daemon.err pppd[12872]: Interface wan has MTU of 1492 -- should be at least 1500.
Tue Nov 14 19:58:04 2023 daemon.err pppd[12872]: This may cause serious connection problems.
Tue Nov 14 19:58:04 2023 daemon.warn odhcpd[1546]: No default route present, overriding ra_lifetime!
Tue Nov 14 19:58:19 2023 daemon.warn pppd[12872]: Timeout waiting for PADO packets
Tue Nov 14 19:58:19 2023 daemon.err pppd[12872]: Unable to complete PPPoE Discovery
Tue Nov 14 19:58:19 2023 daemon.info pppd[12872]: Exit.
I also attempted to clone the MAC address of the ONT, but it didn't resolve the issue.
At this point, I'm wondering whether it's a configuration error, an ISP-related issue, or a hardware problem. It's worth noting that I reached out to the ISP several days ago, and they assured me that bridge connection is permitted.