You have been subscribed to a public bug:
Network issue no IPv6 using Sierra Wireless EM7421 and mbim
Description: Ubuntu Jammy Jellyfish
Release: 22.04
Linux 5.15.0-25-generic
I need to connect via GSM to Internet using IPv6.
IPv6 not present in config.
Internet connect works with IPv4 although issues seem to exist.
EXPECTATION:
IPv6 shall work properly like the EM7455 with same card in very similar
machine, Ubuntu.
IPv6 shall work properly like in Linux-Mint 20.3 on this machine, this setup.
All using the same driver=cdc_mbim
ENVIRONMENT:
SIM is working properly,
EM7421 latest firmware applied,
EM7421 capable doing IPv6 with this setup (according to spec + test with
Win10);
"package" unknown, sorry. ModemManager probably?
ASSUMPTION:
Missing IPv6 is a wrong config / bug in software.
IPv6 communication can be enabled.
Some enhancement / fix can enable IPv6 communication.
REMARK:
Linux-Mint 20.3 una is capable of running the 'EM7421' in proper IPv6 "mode"
(kernel 5.4.0-107-generic).
It uses driver=cdc_mbim as well
details:
Actually no IPv6 available at all (IPv6 is expected to work):
3: wwan0: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UNKNOWN group default qlen 1000
link/ether 6a:05:2c:26:95:58 brd ff:ff:ff:ff:ff:ff
inet 10.34.85.36/29 brd 10.34.85.39 scope global noprefixroute wwan0
This is the Sierra Wireless GSM-Modem (working):
sudo mbimcli --device=/dev/cdc-wdm0 --query-device-caps
[/dev/cdc-wdm0] Device capabilities retrieved:
Device type: 'remote'
Cellular class: 'gsm'
Voice class: 'no-voice'
SIM class: 'removable'
Data class: 'umts, hsdpa, hsupa, lte'
SMS caps: 'pdu-receive, pdu-send'
Ctrl caps: 'reg-manual'
Max sessions: '8'
Custom data class: 'unknown'
Device ID: '356706140353162'
Firmware info: 'SWI9X50C_01.14.03.00'
Hardware info: 'EM7421'
Attempt to start modem via mbim:
pre:
sudo service network-manager stop
sudo systemctl disable ModemManager
then
Report
sudo mbim-network /dev/cdc-wdm0 start
Profile at '/etc/mbim-network.conf' not found...
Querying subscriber ready status 'mbimcli -d /dev/cdc-wdm0
--query-subscriber-ready-status --no-close'...
[/dev/cdc-wdm0] Subscriber ready status retrieved: Ready state: 'initialized'
Subscriber ID: '262011905110762' SIM ICCID: '89490200001788157884' Ready info:
'none' Telephone numbers: (1) '+491604282867' [/dev/cdc-wdm0] Session not
closed: TRID: '3'
Querying registration state 'mbimcli -d /dev/cdc-wdm0
--query-registration-state --no-open=3 --no-close'...
[/dev/cdc-wdm0] Registration status: Network error: 'unknown' Register state:
'home' Register mode: 'automatic' Available data classes: 'lte' Current
cellular class: 'gsm' Provider ID: '26201' Provider name: 'Telekom.de' Roaming
text: 'unknown' Registration flags: 'packet-service-automatic-attach'
[/dev/cdc-wdm0] Session not closed: TRID: '4'
Attaching to packet service with 'mbimcli -d /dev/cdc-wdm0
--attach-packet-service --no-open=4 --no-close'...
[/dev/cdc-wdm0] Successfully attached to packet service [/dev/cdc-wdm0] Packet
service status: Network error: 'unknown' Packet service state: 'attached'
Available data classes: 'lte' Uplink speed: '150000000 bps' Downlink speed:
'300000000 bps' [/dev/cdc-wdm0] Session not closed: TRID: '5'
Starting network with 'mbimcli -d /dev/cdc-wdm0 --connect=apn='' --no-open=5
--no-close'...
Network started successfully
Saving state at /tmp/mbim-network-state-cdc-wdm0... (TRID: 7)
status reported by ip a :
3: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc fq_codel state DOWN group
default qlen 1000
link/ether 86:a6:1f:1a:ce:30 brd ff:ff:ff:ff:ff:ff
try to bring it up:
sudo ip link set dev wwan0 up
(no error reported)
new status reported by
ip a :
3: wwan0: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UNKNOWN group default qlen 1000
link/ether 86:a6:1f:1a:ce:30 brd ff:ff:ff:ff:ff:ff
(All SIM / telephony / GSM data above is real; please handle with care)
lshw reporting on USB and the like
*-usb:2
description: USB controller
product: Tiger Lake-LP USB 3.2 Gen 2x1 xHCI Host Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 20
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:155 memory:5c420000-5c42ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 5.15.0-25-generic xhci-hcd
physical id: 0
bus info: usb@3
logical name: usb3
version: 5.15
capabilities: usb-2.00
configuration: driver=hub slots=12 speed=480Mbit/s
*-usb:0
description: Communication device
product: EM7421
vendor: Sierra Wireless, Incorporated
physical id: 3
bus info: usb@3:3
version: 0.06
serial: 8G1202758803B121
capabilities: usb-2.00
configuration: driver=cdc_mbim maxpower=500mA speed=480Mbit/s
USB - DRIVER assignment for
Bus 003 Device 003: ID 1199:90b1 Sierra Wireless, Inc. EM7421
lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 3: Dev 3, If 0, Class=Communications, Driver=cdc_mbim, 480M
|__ Port 3: Dev 3, If 3, Class=Vendor Specific Class, Driver=, 480M
|__ Port 3: Dev 3, If 1, Class=CDC Data, Driver=cdc_mbim, 480M
|__ Port 3: Dev 3, If 4, Class=Vendor Specific Class, Driver=, 480M
|__ Port 3: Dev 3, If 2, Class=Vendor Specific Class, Driver=, 480M
|__ Port 5: Dev 4, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 6: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 5, If 2, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 5, If 3, Class=Video, Driver=uvcvideo, 480M
|__ Port 7: Dev 6, If 0, Class=Chip/SmartCard, Driver=, 12M
|__ Port 10: Dev 7, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 10: Dev 7, If 1, Class=Wireless, Driver=btusb, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
LUCKILY some parts are WORKING (when booting from dark, NM enabled):
WITH STATUS
user@user:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state
DOWN group default qlen 1000
link/ether 90:2e:16:1e:4c:f9 brd ff:ff:ff:ff:ff:ff
3: wwan0: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UNKNOWN group default qlen 1000
link/ether 6a:05:2c:26:95:58 brd ff:ff:ff:ff:ff:ff
inet 10.34.85.36/29 brd 10.34.85.39 scope global noprefixroute wwan0
valid_lft forever preferred_lft forever
4: wlp0s20f3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state
DOWN group default qlen 1000
link/ether 94:e2:3c:ca:c4:48 brd ff:ff:ff:ff:ff:ff
THERE IS A CONNECT TO ipv4 SUCCESSFULLY WORKING:
user@user:~$ ping www.digitalcourage.de
PING www.digitalcourage.de (94.130.145.107) 56(84) bytes of data.
64 bytes from edge6-1.freistilbox.net (94.130.145.107): icmp_seq=1 ttl=52
time=28.1 ms
64 bytes from edge6-1.freistilbox.net (94.130.145.107): icmp_seq=2 ttl=52
time=28.8 ms
64 bytes from edge6-1.freistilbox.net (94.130.145.107): icmp_seq=3 ttl=52
time=27.8 ms
^C
--- www.digitalcourage.de ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 27.844/28.235/28.782/0.398 ms
user@user:~$
Please advise how to get the WWAN adapter EM7421 working in IPv6 mode.
Thanks a lot in advance for your work!
** Affects: modemmanager (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
--
Network issue no IPv6 using Sierra Wireless EM7421 and mbim
https://bugs.launchpad.net/bugs/1969241
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