help with OpenWRT on HubOne

[#1]

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

[#2]

@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.

[#3]

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.

[#4]

@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.

[#5]

I am sure we used to use PPPOA for Plusnet ADSL

[#6]

@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 .

[#7]

---

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

---

ADSL uses PPPoA

[#8]

---

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

---

ADSL uses PPPoA

[#9]

@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), 

[#10]

@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.

[#11]

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

[#12]

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

[#13]

@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...

[#14]

@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

[#15]

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

[#16]

.@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'