topic Re: help with OpenWRT on HubOne in My Router

help with OpenWRT on HubOne

AOR1 — Sat, 28 Mar 2026 15:05:33 GMT

Trying to get a HubOne with OpenWRT that I bought on ebay up and running.
I keep getting the "connection attempt failed" error followed by "Unknown error (USER_REQUEST)".

Hoping someone will know the current correct settings to input.

I have followed the following configuration instructions based on what I found here:
https://openwrt.org/toh/bt/homehub_v5a
(it says AnnexA (all) so I made a guess on which option to choose)

Go to LuCI -> Network -> Interfaces:
Set 'DSL' parameters to 'ADSL (all variants) Annex A/L/M + VDSL2 Annex A/B/C' and 'tone' set to 'A43C + J43 + A43', select ATM, and ADSL.
Set 'ATM bridge' parameters, VCI: 38, VPI: 0. Encapsulation mode: LLC
Edit the 'WAN' interface.
PPPoE protocol and dsl0 are already there by default
Enter username@plusdsl.net and password

Any suggestions appreciated

Re: help with OpenWRT on HubOne

MisterW — Sat, 28 Mar 2026 15:17:41 GMT

@AOR1 are you on ADSL or FTTC ?

If its ADSL, then that's normally PPPoA, have you tried the PPPoA setup option ?

I do use Openwrt but its on an FTTP connection. I've never used it on a combined modem/router with a DSL port.

Re: help with OpenWRT on HubOne

AOR1 — Sat, 28 Mar 2026 15:34:17 GMT

It's ADSL.

The documentation here:

https://openwrt.org/toh/bt/homehub_v5a

says "BT and Plusnet support PPPoE protocol." and nothing from all the Googling I've been doing contradicts that.

Re: help with OpenWRT on HubOne

MisterW — Sat, 28 Mar 2026 16:00:19 GMT

@AOR1

BT and Plusnet support PPPoE protocol.

IIRC yes they do. It was used when you had a router connected via a DSL modem. I guess that's what Openwrt is doing. Its configuring the DSL interface as an ATM bridge and then connecting the WAN interface as PPPoE to that.

Is there any status indication to say whether the dsl link is up (synchronised) ?

Is there any useful info in the system log ? specifically from the pppd daemon. SSH into it and run 'logread | grep pppd'. Post the output and I'll see if there's anything obvious.

Re: help with OpenWRT on HubOne

PhilipHeyes — Sat, 28 Mar 2026 16:03:19 GMT

I am sure we used to use PPPOA for Plusnet ADSL

Re: help with OpenWRT on HubOne

MisterW — Sat, 28 Mar 2026 16:39:02 GMT

@PhilipHeyes

I am sure we used to use PPPOA for Plusnet ADSL

Yes, combined modem/routers usually used PPPoA. PPPoE was used where you had a separate router connected to a DSL modem in ATM bridge mode. Although the Hub 1 is a combined modem router, Openwrt tends to see it (apparently) as a dsl modem interface and a separate internal wan interface. Probably because OPenwrt is primarily intended to be used with router only hardware. Supporting a dsl connection looks like an add-on for modem routers .

Re: help with OpenWRT on HubOne

Jon — Sat, 28 Mar 2026 17:07:22 GMT

says "BT and Plusnet support PPPoE protocol." and nothing from all the Googling I've been doing contradicts that.

ADSL uses PPPoA

Re: help with OpenWRT on HubOne

RealAleMadrid — Sat, 28 Mar 2026 17:32:38 GMT

@Jon Sometime ago during my ten years or so on Plusnet ADSL services I always used a PPPoE connection, I suspect PPPoA will also work.

On a PPPoE connection the data path is actually PPPoEoA (PPPoE over ATM),

Re: help with OpenWRT on HubOne

MisterW — Sat, 28 Mar 2026 17:32:08 GMT

@Jon Yes, ADSL is PPP over ATM. Where you have a combined modem/router the connection is normally configured as a single interface and so is set to PPPoA (PPP over ATM). However where you have a separate modem and router, the router is connected via Ethernet to the modem and therefore is configured for PPPoE (PPP over ethernet). The modem is configured as an ATM bridge i.e it bridges the ethernet to ATM. In this case the ADSL multiplexing needs to be set for LLC rather than VC-MUX.

Openwrt on the Hub 1 provides a logical WAN interface which can either be connected to an ethernet WAN device (the WAN port) or to the DSL device (the DSL port). The logical WAN interface is configured for PPPoE and the dsl device provides the ATM bridge . It effectively emulates the separate modem & router configuration.

Re: help with OpenWRT on HubOne

AOR1 — Sat, 28 Mar 2026 17:31:24 GMT

I've just tried (it was called PPPoATM, there was no PPPoA) with the instructions at https://openwrt.org/toh/bt/homehub_v5a and I still get the error message

Re: help with OpenWRT on HubOne

AOR1 — Sat, 28 Mar 2026 17:34:37 GMT

I've just tried it. Still get the error message

Re: help with OpenWRT on HubOne

MisterW — Sat, 28 Mar 2026 17:36:18 GMT

@AOR1 if you like to post your /etc/config/network file (redact any personal infomation) , I'll happily take a look to see if there's anything obvious I can see is wrong. Although , as I said, above, I've never used Openwrt in a dsl configuration.

If necessary, I do have a Hub 1 flashed with Openwrt so I could have a look at the config. I've no means of testing it in dsl mode though...

Re: help with OpenWRT on HubOne

Jon — Sat, 28 Mar 2026 17:47:41 GMT

@AOR1 I can see you are online (if the account name in your profile is correct) now so I assume you have a 2nd device which is working.

I can't see any failed attempts though which means that the username is likely wrong (if it was the password, i would see password rejections). Please ensure it's username@plusdsl.net

Re: help with OpenWRT on HubOne

AOR1 — Sat, 28 Mar 2026 17:53:18 GMT

Thanks Jon, yes I'm back on my old (working) router. Yes I've been using the correct username, thanks for letting me know you don't see any failed attempts

Re: help with OpenWRT on HubOne

AOR1 — Sun, 29 Mar 2026 08:51:19 GMT

.@MisterW Thanks

I couldn't see anything from pppd in the system log on LuCI.
I did notice these entries which might be important:

Tue Mar 17 01:02:50 2026 daemon.notice netifd: Network device 'lan2' link is down
Tue Mar 17 01:02:51 2026 daemon.notice netifd: bridge 'br-lan' link is down
Tue Mar 17 01:02:51 2026 daemon.notice netifd: Interface 'lan' has link connectivity loss
Tue Mar 17 01:02:51 2026 daemon.warn odhcpd[1684]: rfc9096: br-lan: stale fd8d:42e3:a548::1/60
Tue Mar 17 01:02:51 2026 daemon.warn odhcpd[1684]: No default route present, setting ra_lifetime to 0!
Tue Mar 17 01:02:51 2026 daemon.warn odhcpd[1684]: rfc9096: br-lan: piofile updated

(I didn't look via ssh as I don't know where the logs are stored/ what file to look for)

here is /etc/config/network

root@OpenWrt:/etc/config# cat network
config interface 'loopback'
option device 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config globals 'globals'
option ula_prefix 'fd8d:42e3:a548::/48'
option packet_steering '1'

config atm-bridge 'atm'
option vpi '0'
option vci '38'
option encaps 'llc'
option payload 'bridged'
option nameprefix 'dsl'

config dsl 'dsl'
option annex 'a'
option tone 'a'
option xfer_mode 'atm'
option line_mode 'adsl'
option ds_snr_offset '0'

config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
list ports 'lan3'
list ports 'lan4'

config device
option name 'lan1'
option macaddr '90:72:82:a6:c2:94'

config device
option name 'lan2'
option macaddr '90:72:82:a6:c2:94'

config device
option name 'lan3'
option macaddr '90:72:82:a6:c2:94'

config device
option name 'lan4'
option macaddr '90:72:82:a6:c2:94'

config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'

config device
option name 'dsl0'
option macaddr '90:72:82:a6:c2:95'

config interface 'wan'
option device 'dsl0'
option proto 'pppoe'
option username 'xxxx@plusdsl.net'
option password 'xxxx'
option ipv6 '1'

config interface 'wan6'
option device '@wan'
option proto 'dhcpv6'

Re: help with OpenWRT on HubOne

AOR1 — Sun, 29 Mar 2026 09:29:02 GMT

.@MisterW logread | grep pppd gives nothing

Re: help with OpenWRT on HubOne

MisterW — Sun, 29 Mar 2026 09:32:44 GMT

@AOR1

(I didn't look via ssh as I don't know where the logs are stored/ what file to look for)

You dont need to know where the logs are stored, just run 'logread'

The only thing I can see that's definitely wrong with your config is that ipv6 shouldnt be enabled (Plusnet dont currently support ipv6) but I wouldnt think that is the cause of the problem

Change

option ipv6 '1' to option ipv6 '0'

Does the dsl0 interface come up ? i.e synchronise

Re: help with OpenWRT on HubOne

MisterW — Sun, 29 Mar 2026 10:35:49 GMT

@AOR1 logread | grep pppd gives nothing

That means that its not even trying to setup the pppoe connection.

It wont attempt it until the dsl link is up , is the dsl link synching ? ( I've no idea how you check that though )

This is the sort of log you'd expect for a successful pppoe setup

Tue Mar 10 10:20:44 2026 daemon.info pppd[7308]: Plugin pppoe.so loaded.
Tue Mar 10 10:20:44 2026 daemon.info pppd[7308]: PPPoE plugin from pppd 2.5.2
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: pppd 2.5.2 started by root, uid 0
Tue Mar 10 10:20:44 2026 daemon.info pppd[7308]: PPP session is 6745
Tue Mar 10 10:20:44 2026 daemon.warn pppd[7308]: Connected to F8:13:08:41:6F:D2 via interface eth1
Tue Mar 10 10:20:44 2026 daemon.info pppd[7308]: Using interface pppoe-wan
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: Connect: pppoe-wan <--> eth1
Tue Mar 10 10:20:44 2026 daemon.info pppd[7308]: CHAP authentication succeeded
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: CHAP authentication succeeded
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: peer from calling number xxxxxx authorized
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: local IP address xxx.xxx.xxx.xxx
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: remote IP address 195.166.130.251
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: primary DNS address 212.159.13.49
Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: secondary DNS address 212.159.6.9

albeit in your case I would expect this line

Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: Connect: pppoe-wan <--> eth1

to show

Tue Mar 10 10:20:44 2026 daemon.notice pppd[7308]: Connect: pppoe-wan <--> dsl0

Re: help with OpenWRT on HubOne

AOR1 — Sun, 29 Mar 2026 11:39:51 GMT

.@MisterW In reply to "Does the dsl0 interface come up ? i.e synchronise" - the interface is there but it has error message 'Network device is not present'. Occasionally the error message is 'connection attempt failed' but I can't work out how to get this reproducibly. I've attached a screenshot so it's clear what I mean.

As for the change you suggested to the /etc/config/network file - I haven't done that yet as I need to work out how to do this, maybe with vi. Sorry I'm not much of a Linux user.

Re: help with OpenWRT on HubOne

MisterW — Sun, 29 Mar 2026 11:53:05 GMT

@AOR1

Does the dsl0 interface come up ? i.e synchronise" - the interface is there but it has error message 'Network device is not present'

That's the WAN interface and its basically saying that the dsl0 device isnt available. I had sort of expected to see a dsl0 interface on that screen but (as I said) I've never used Openwrt in a DSL situation.

Does the dsl0 interface come up ? i.e synchronise" - the interface is there but it has error message 'Network device is not present'

You dont need to edit the file , you can change it from LUCI. Edit the WAN interface, goto Advanced settings and change 'Obtain IPV6 address' from Manual to Disabled.

Just a thought, does 'logread | grep dsl0' show anything ?