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FS#1247 - BT Home Hub 5A fails to connect PPPOE over DSL #6203

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openwrt-bot opened this issue Dec 31, 2017 · 11 comments
Closed

FS#1247 - BT Home Hub 5A fails to connect PPPOE over DSL #6203

openwrt-bot opened this issue Dec 31, 2017 · 11 comments
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ezplanet:

Supply the following if possible:

  • Device problem occurs on BT Home Hub 5A
  • Software versions of LEDE release since LEDE r5111 to date, latest tried was r5620. In other words since the conversion of the DSL interface name from nas0 to dsl0
  • Steps to reproduce configure the router as follows to connect to Infostrada Italy

I tried both upgrading to the new firmware from the latest working build which is r5053 and configuring the router from scratch after a full configuration reset.

In any case the DSL line appears to connect, however no packets go through and PPPOE does not come up.
The only way to have a working router is to downgrade to r5053. No problem instead using the new firmware with UK providers who have PPPOA.

/etc/config/network extract:

config interface 'wan'
option ifname 'dsl0'
option proto 'pppoe'
option username 'benvenuto'
option password 'ospite'
option ipv6 'auto'
option delegate '0'

config device 'wan_dev'
option name 'dsl0'
option macaddr '18:62:2c:4d:9e:17'

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

dsl status output:

ATU-C Vendor ID: Infineon 130.183
ATU-C System Vendor ID: 00,00,30,30,30,30,00,00
Chipset: Lantiq-VRX200
Firmware Version: 5.8.0.11.1.1
API Version: 4.17.18.6
XTSE Capabilities: 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0
Annex: A
Line Mode: G.992.5 (ADSL2+)
Profile:
Line State: UP [0x801: showtime_tc_sync]
Forward Error Correction Seconds (FECS): Near: 0 / Far: 0
Errored seconds (ES): Near: 31 / Far: 0
Severely Errored Seconds (SES): Near: 0 / Far: 0
Loss of Signal Seconds (LOSS): Near: 0 / Far: 12
Unavailable Seconds (UAS): Near: 115 / Far: 115
Header Error Code Errors (HEC): Near: 107 / Far: 0
Non Pre-emtive CRC errors (CRC_P): Near: 0 / Far: 0
Pre-emtive CRC errors (CRCP_P): Near: 0 / Far: 0
Power Management Mode: L0 - Synchronized
Latency [Interleave Delay]: 0.25 ms [Fast] 0.25 ms [Fast]
Data Rate: Down: 10.537 Mb/s / Up: 997 Kb/s
Line Attenuation (LATN): Down: 45.3 dB / Up: 27.9 dB
Signal Attenuation (SATN): Down: 43.5 dB / Up: 27.8 dB
Noise Margin (SNR): Down: 6.0 dB / Up: 11.7 dB
Aggregate Transmit Power (ACTATP): Down: 19.7 dB / Up: 12.4 dB
Max. Attainable Data Rate (ATTNDR): Down: 10.600 Mb/s / Up: 1.184 Mb/s
Line Uptime Seconds: 233
Line Uptime: 3m 53s

ifconfig output:

br-lan Link encap:Ethernet HWaddr 18:62:2C:4D:9E:16 inet addr:192.168.90.3 Bcast:192.168.90.255 Mask:255.255.255.0 inet6 addr: fde8:e304:35bc::1/60 Scope:Global inet6 addr: fe80::1a62:2cff:fe4d:9e16/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5536 errors:0 dropped:0 overruns:0 frame:0 TX packets:4045 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:495287 (483.6 KiB) TX bytes:1201605 (1.1 MiB)

dsl0 Link encap:Ethernet HWaddr 18:62:2C:4D:9E:17
inet6 addr: fe80::1a62:2cff:fe4d:9e17/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:560 dropped:0 overruns:0 carrier:560
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth0 Link encap:Ethernet HWaddr 06:3C:35:20:22:4E
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth0.1 Link encap:Ethernet HWaddr 18:62:2C:4D:9E:16
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:4601 errors:0 dropped:0 overruns:0 frame:0
TX packets:4601 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:399879 (390.5 KiB) TX bytes:399879 (390.5 KiB)

wlan0 Link encap:Ethernet HWaddr 18:62:2C:4D:9E:19
inet6 addr: fe80::1a62:2cff:fe4d:9e19/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2438 errors:0 dropped:0 overruns:0 frame:0
TX packets:3256 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:220473 (215.3 KiB) TX bytes:664380 (648.8 KiB)

wlan1 Link encap:Ethernet HWaddr 18:62:2C:4D:9E:18
inet6 addr: fe80::1a62:2cff:fe4d:9e18/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3076 errors:0 dropped:0 overruns:0 frame:0
TX packets:3702 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:351878 (343.6 KiB) TX bytes:984403 (961.3 KiB)

ps output:

PID USER VSZ STAT COMMAND 1 root 1544 S /sbin/procd 2 root 0 SW [kthreadd] 3 root 0 SW [ksoftirqd/0] 4 root 0 SW [kworker/0:0] 5 root 0 SW< [kworker/0:0H] 6 root 0 SW [kworker/u4:0] 7 root 0 SW [rcu_sched] 8 root 0 SW [rcu_bh] 9 root 0 SW [migration/0] 10 root 0 SW< [lru-add-drain] 11 root 0 SW [cpuhp/0] 12 root 0 SW [cpuhp/1] 13 root 0 SW [migration/1] 14 root 0 SW [ksoftirqd/1] 15 root 0 SW [kworker/1:0] 16 root 0 SW< [kworker/1:0H] 129 root 0 SW [oom_reaper] 130 root 0 SW< [writeback] 132 root 0 SW< [crypto] 133 root 0 SW< [bioset] 135 root 0 SW< [kblockd] 183 root 0 SW [kswapd0] 184 root 0 SW< [vmstat] 243 root 0 SW< [pencrypt] 245 root 0 SW< [pdecrypt] 263 root 0 SW< [bioset] 270 root 0 SW< [bioset] 275 root 0 SW< [bioset] 280 root 0 SW< [bioset] 347 root 0 SW< [ipv6_addrconf] 365 root 0 SW [ubi_bgt0d] 366 root 0 SW< [bioset] 371 root 0 SW< [kworker/0:1H] 372 root 0 SW [kworker/0:1] 373 root 0 SW< [kworker/1:1H] 392 root 0 SW< [bioset] 393 root 0 SW< [xfsalloc] 403 root 0 SW< [xfs_mru_cache] 427 root 0 SW [kworker/1:2] 478 root 0 SW [ubifs_bgt0_2] 548 root 1192 S /sbin/ubusd 549 root 900 S /sbin/askfirst /usr/libexec/login.sh 592 root 0 SW< [cifsiod] 594 root 0 SW< [cifsoplockd] 598 root 0 SW< [rpciod] 600 root 0 SW< [xprtiod] 621 root 0 SW< [nfsiod] 798 root 0 SW< [cfg80211] 808 root 0 SW< [ath10k_wq] 809 root 0 SW< [ath10k_aux_wq] 983 root 1224 S /sbin/logd -S 64 992 root 1524 S /sbin/rpcd 1043 root 1648 S /sbin/netifd 1073 root 1420 S /usr/sbin/odhcpd 1134 root 1200 S /usr/sbin/crond -f -c /etc/crontabs -l 8 1153 root 1064 S /usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p 22 -K 300 -T 3 1159 root 0 SW [autbtex] 1160 root 0 SW [pmex_ne] 1162 root 0 SW [pmex_fe] 1934 root 1980 S /usr/sbin/hostapd -s -P /var/run/wifi-phy0.pid -B /var/run/hostapd-phy0.conf 1983 root 2276 S /usr/sbin/uhttpd -f -h /www -r libeccio -x /cgi-bin -u /ubus -t 60 -T 30 -k 20 -A 1 -n 3 -N 100 -R 1988 root 1980 S /usr/sbin/hostapd -s -P /var/run/wifi-phy1.pid -B /var/run/hostapd-phy1.conf 2158 root 1196 S< /usr/sbin/ntpd -n -N -l -S /usr/sbin/ntpd-hotplug -p 0.it.pool.ntp.org -p 1.it.pool.ntp.org -p 2.i 2273 dnsmasq 2704 S /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf.cfg01411c -k -x /var/run/dnsmasq/dnsmasq.cfg01411c.pid 2490 root 996 S /usr/sbin/br2684ctl -c 0 -e 0 -p 1 -a 0.8.35 -S /lib/netifd/br2684-up 2516 root 1132 S /usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p 22 -K 300 -T 3 2546 root 1200 S -ash 9113 root 1132 S /usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p 22 -K 300 -T 3 9145 root 1200 S -ash 9763 root 0 SW [kworker/u4:2] 12412 root 1260 S /sbin/vdsl_cpe_control -i05_01_04_00_4C_01_04_07 -n /sbin/dsl_notify.sh -f /lib/firmware/lantiq-vr 19681 root 1212 S /usr/sbin/pppd nodetach ipparam wan ifname pppoe-wan +ipv6 nodefaultroute usepeerdns maxfail 1 use 19828 root 1196 R ps
@openwrt-bot
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ezplanet:

When I upgrade from r5053 keeping the existing configuration, /etc/config/network appears to be converted successfully (the DSL interface changes from nas0 to dsl0 correctly).

I had already reported this issue, but it appears to have been closed, possibly because I was unable to further any tests. Unfortunately I visit only occasionally the location where this router is installed. Right now I downgraded to r5053 which is the latest working firmware.

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dedeckeh:

Can you add the output of ifstatus wan and the netifd traces (logread | grep netifd)

The ipv6 parameter must not be set to auto but rather to 1 in the config as a wan6 interface is explicitly created by uci config. Auto creates implicitly a wan_6 interface in netifd; but this is not related to the reported issue

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ezplanet:

I hope you find the output more helpful than I did:

ifstatus wan

{
"up": false,
"pending": true,
"available": true,
"autostart": true,
"dynamic": false,
"proto": "pppoe",
"device": "dsl0",
"data": {

},
"errors": [
	{
		"subsystem": "pppoe",
		"code": "CONNECT_FAILED"
	}
]

}

logread|grep netifd

Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'lan' is enabled
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'lan' is setting up now
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'lan' is now up
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'loopback' is enabled
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'loopback' is setting up now
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'loopback' is now up
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Network device 'lo' link is up
Sun Dec 31 20:03:50 2017 daemon.notice netifd: Interface 'loopback' has link connectivity
Sun Dec 31 20:03:57 2017 daemon.notice netifd: bridge 'br-lan' link is up
Sun Dec 31 20:03:57 2017 daemon.notice netifd: Interface 'lan' has link connectivity
Sun Dec 31 20:03:59 2017 daemon.notice netifd: Network device 'wlan0' link is up
Sun Dec 31 20:04:00 2017 daemon.notice netifd: Network device 'wlan1' link is up
Sun Dec 31 20:04:12 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:04:12 2017 daemon.notice netifd: Network device 'dsl0' link is up
Sun Dec 31 20:04:12 2017 daemon.notice netifd: Interface 'wan' has link connectivity
Sun Dec 31 20:04:12 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:04:28 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:04:28 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:04:28 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:04:28 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:04:44 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:04:44 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:04:44 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:04:44 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:04:59 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:04:59 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:04:59 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:04:59 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:05:15 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:05:15 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:05:15 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:05:15 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:05:30 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:05:30 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:05:30 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:05:30 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:05:46 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:05:46 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:05:46 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:05:46 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:06:01 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:06:01 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:06:01 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:06:01 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:06:17 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:06:17 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:06:17 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:06:17 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:06:32 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:06:32 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:06:32 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:06:32 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:06:48 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:06:48 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:06:48 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:06:48 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:07:03 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:07:03 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:07:03 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:07:03 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:07:19 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:07:19 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:07:19 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:07:19 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:07:34 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:07:34 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:07:34 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:07:34 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:07:50 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:07:50 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:07:50 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:07:50 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:08:05 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:08:05 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:08:05 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:08:05 2017 daemon.notice netifd: Interface 'wan' is setting up now
Sun Dec 31 20:08:21 2017 daemon.notice netifd: Interface 'wan' is now down
Sun Dec 31 20:08:21 2017 daemon.notice netifd: Interface 'wan' is disabled
Sun Dec 31 20:08:21 2017 daemon.notice netifd: Interface 'wan' is enabled
Sun Dec 31 20:08:21 2017 daemon.notice netifd: Interface 'wan' is setting up now

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ezplanet:

Further to my previous report, if I run:

/etc/init.d/dsl_control stop
and after a few seconds
/etc/init.d/dsl_control start

occasionally pppoe-wan will connect and acquire an IP address. Occasionally it connects also at boot (after several reboots), but never when powerd on after a power off. The occasional nature of a successful connection however makes this firmware version quite unreliable and thus not ready for mainstream use.

I tried this firmware version on 2 different Home Hub 5A (I have one for stable DSL link and one to test new firmware) on 2 different Infostrada (Italy provider) DSL lines requiring PPPOE, therefore I can exclude a hardware issue.

The same model with this firmware version (> r5111 and newer OpenWrt) used in the UK where providers use PPPOA, works fine. This issue thus appears to affect only DSL lines provided with PPPOE.

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mkresin:

To behonest, I still have no idea why it doesn't work for you.

Would you please add some ppp debugging:

config interface 'wan' option ifname 'dsl0' option proto 'pppoe' option username 'benvenuto' option password 'ospite' option ipv6 'auto' option delegate '0' option pppd_options 'debug'

and provide the the full logread output. The output of lsmod would be interesting as well, since it will show if the correct kernel module is loaded (atm/ptm).

As last resort use tcpdump to provide a package dump from the packages transferred via the dsl0 interface. Maybe it gives us a clue what is going wrong.

So far it doesn't look like a generic issue. Or at least no reports of the issue in https://forum.lede-project.org/t/netgear-dm200-missing-download-link-and-failed-tftp-flash/9926/4.

I'm quite sure I tested the commit on a a vdsl line (ptm) + pppoe without any issues, beside the test done by the contributer of the dsl0 rename patch. I will give it another try during the weekend.

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mkresin:

It seems to me that the mentioned commit brought back a well known race condition.

Mauro, are you able to test a quick hack? I would like to ensure that I'm turning the correct knob before investing more time.

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ezplanet:

Unfortunately at the moment I am unable to perform further tests because I have 2 PPPoE routers in remote locations and in case they fail to reconnect I would have to get on a flight to re-flash the old firmware and restore service.

I suggest to revert all the changes to DSL since r5053. As it is now, this firmware is not ready for mainstream release.

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ezplanet:

The reason I asked to reopen this bug is to request that the changes to DSL/PPPoE handling from r5053 are rolled back. It is not safe to release newer firmware releases into the mainstream without resolving this bug which is blocking DSL access completely.
Given the nature of the issue that removes core DSL functionality, I recommend that the priority is raised to high.

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mkresin:

NAK. The patches will not be rolled back. I prefer to fix issue instead.

The reported issue is fixed and it works now exactly the same way as it worked with r5053. Just the interfaces are created with a different name. At least to my reading you haven't tested a fixed version.

But it is impossible to fix any bugs you reported if you don't have the time to test fixes. Furthermore the patch which introduced the issue was send via the usual public channels, was left for review/testing a reasonable amount of time, but didn't received any responses (has to be read as everything is fine).

Please keep in mind that you are using the development branch (which is much appreciated by the way). You have to expect random breakage, which is usually fixed after reported.

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ezplanet:

Thank you Mathias, unfortunately I cannot risk a remote firmware update that would break my connection permanently. My only PPPoE routers giving this issue are in Italy and I am in the UK which is using different PPPoA standards.

Are you saying that r5620 has the same software as r5053 (last known working for me), with the interface name being the only difference?

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mkresin:

cannot risk a remote firmware update

I'm total with you. Managed to bring remote servers offline by my self. Hence I know what a hassle it can be to get them back online.

with the interface name being the only difference

Yes, in terms of xDSL. The interface is created with the final name instead of rename after created. There was an existing race condition fix that got disabled due to the interface rename. It was fixed with the mentioned commit as well.

I can't assure you that it works for you now, but I'm pretty confident that it does.

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