<div dir="ltr"><div class="gmail_default" style=""><span style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>Hello,</i><br><br><i>We are trying to get the Quectel BG96 modem to work with qmi_wwan using ModemManager and NetworkManager. </i></span><i>Basically, we can only receive data but we cannot transmit data. We have tried TCP, UDP and ICMP packets. All information on our efforts is described below:<br style="font-family:Arial,Helvetica,sans-serif"></i><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i><br></i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>We followed the instructions from Quectel to support the Qeuctel BG96: </i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><a href="https://www.quectel.com/UploadImage/Downlad/Quectel_WCDMA&LTE_Linux_USB_Driver_User_Guide_V1.8.pdf" target="_blank"><i>https://www.quectel.com/UploadImage/Downlad/Quectel_WCDMA&LTE_Linux_USB_Driver_User_Guide_V1.8.pdf</i></a></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i><br></i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>Linux kernel version: 4.9.88</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>ModemManager version: 1.10.8</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>NetworkManager version: 1.18</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>libqmi version: 1.24.0</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i><br></i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>The udev rule for ModemManager for the BG96:</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i><br></i></div><div dir="auto" style="color:rgb(0,0,0)"><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ACTION!="add|change|move|bind", GOTO="mm_quectel_port_types_end"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c7c", GOTO="mm_quectel_port_types"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>GOTO="mm_quectel_port_types_end"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b><br></b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>LABEL="mm_quectel_port_types"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="?*", ENV{.MM_USBIFNUM}="$attr{bInterfaceNumber}"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b><br></b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b># Quectel BG96</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0296", ENV{ID_MM_TTY_BAUDRATE}="115200"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0296", ENV{.MM_USBIFNUM}=="00", ENV{ID_MM_PORT_TYPE_QCDM}="1"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0296", ENV{.MM_USBIFNUM}=="01", ENV{ID_MM_PORT_TYPE_GPS}="1"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0296", ENV{.MM_USBIFNUM}=="02", ENV{ID_MM_PORT_TYPE_AT_PRIMARY}="1"</b></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><b>ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0296", ENV{.MM_USBIFNUM}=="03", ENV{ID_MM_PORT_TYPE_AT_SECONDARY}="1"</b></font></div></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)">The output of ModemManager:</div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace"># mmcli -m 0</font></div><div dir="auto" style="color:rgb(0,0,0)"><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> General | dbus path: /org/freedesktop/ModemManager1/Modem/0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | device id: cd57e3b09272b583c826a931e0e771c502c59a3d</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> Hardware | manufacturer: QUALCOMM INCORPORATED</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | model: 0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | revision: BG96MAR02A07M1G</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | h/w revision: 10000</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | supported: gsm-umts, lte</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | current: gsm-umts, lte</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | equipment id: 862061043536548</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> System | device: /sys/devices/soc0/soc/2100000.aips-bus/2184000.usb/ci_hdrc.0/usb1/1-1</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | drivers: option1, qmi_wwan</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | plugin: Quectel</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | primary port: cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | ports: ttyUSB0 (qcdm), ttyUSB1 (gps), ttyUSB2 (at),</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | cdc-wdm0 (qmi), wwan0 (net), ttyUSB3 (at)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> Status | lock: sim-pin2</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | unlock retries: sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | state: connected</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | power state: on</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | access tech: gsm</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | signal quality: 71% (recent)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> Modes | supported: allowed: 2g; preferred: none</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | allowed: 4g; preferred: none</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | allowed: 2g, 4g; preferred: 4g</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | allowed: 2g, 4g; preferred: 2g</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | current: allowed: 2g, 4g; preferred: 4g</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> Bands | supported: egsm, dcs, pcs, g850, eutran-1, eutran-2, eutran-3,</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | eutran-4, eutran-5, eutran-8, eutran-12, eutran-13, eutran-17,</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | eutran-18, eutran-19, eutran-20, eutran-39</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | current: egsm, dcs, pcs, g850, eutran-1, eutran-2, eutran-3,</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | eutran-4, eutran-5, eutran-8, eutran-12, eutran-13, eutran-17,</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | eutran-18, eutran-19, eutran-20, eutran-39</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> IP | supported: ipv4, ipv6, ipv4v6</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> 3GPP | imei: 862061043536548</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | operator id: 20404</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> | registration: roaming</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> 3GPP EPS | ue mode of operation: csps-2</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> SIM | dbus path: /org/freedesktop/ModemManager1/SIM/0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> --------------------------------</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> Bearer | dbus path: /org/freedesktop/ModemManager1/Bearer/0</font></div></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="color:rgb(0,0,0)"><div dir="auto" style="overflow-wrap: break-word;"><div dir="auto" style="font-family:Arial,Helvetica,sans-serif"><i>We have added a connection to the APN via:</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif"><br></div><div dir="auto" style="overflow-wrap: break-word;"><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"># nmcli c add \</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">> type gsm \</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">> ifname "cdc-wdm0" \</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">> apn "vf-viriciti" \</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">> gsm.number "*99***1#" \</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">> gsm.pin "0000"</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">Connection 'gsm-cdc-wdm0' (87994115-cbd9-48c5-b2a3-71000180722e) successfully added.</font></div></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif"><br></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif"><i>The specifications of the connection:</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif"><br></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"># nmcli c show id gsm-cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><a href="http://connection.id/" target="_blank">connection.id</a>: <span style="white-space:pre-wrap"> </span>gsm-cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.uuid: <span style="white-space:pre-wrap"> </span>87994115-cbd9-48c5-b2a3-71000180722e</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.stable-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.type: <span style="white-space:pre-wrap"> </span>gsm</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.interface-name: <span style="white-space:pre-wrap"> </span>cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.autoconnect: <span style="white-space:pre-wrap"> </span>yes</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.autoconnect-priority: <span style="white-space:pre-wrap"> </span>0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.autoconnect-retries: <span style="white-space:pre-wrap"> </span>-1 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.multi-connect: <span style="white-space:pre-wrap"> </span>0 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.auth-retries: <span style="white-space:pre-wrap"> </span>-1</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.timestamp: <span style="white-space:pre-wrap"> </span>1571947581</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.read-only: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.permissions: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.zone: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.master: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.slave-type: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.autoconnect-slaves: <span style="white-space:pre-wrap"> </span>-1 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.secondaries: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.gateway-ping-timeout: <span style="white-space:pre-wrap"> </span>0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.metered: <span style="white-space:pre-wrap"> </span>unknown</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.lldp: <span style="white-space:pre-wrap"> </span>default</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.mdns: <span style="white-space:pre-wrap"> </span>-1 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">connection.llmnr: <span style="white-space:pre-wrap"> </span>-1 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.method: <span style="white-space:pre-wrap"> </span>auto</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dns: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dns-search: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dns-options: <span style="white-space:pre-wrap"> </span>""</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dns-priority: <span style="white-space:pre-wrap"> </span>0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.addresses: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.gateway: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.routes: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.route-metric: <span style="white-space:pre-wrap"> </span>-1</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.route-table: <span style="white-space:pre-wrap"> </span>0 (unspec)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.routing-rules: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.ignore-auto-routes: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.ignore-auto-dns: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dhcp-client-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dhcp-timeout: <span style="white-space:pre-wrap"> </span>0 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dhcp-send-hostname: <span style="white-space:pre-wrap"> </span>yes</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dhcp-hostname: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dhcp-fqdn: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.never-default: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.may-fail: <span style="white-space:pre-wrap"> </span>yes</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv4.dad-timeout: <span style="white-space:pre-wrap"> </span>-1 (default)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.method: <span style="white-space:pre-wrap"> </span>auto</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dns: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dns-search: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dns-options: <span style="white-space:pre-wrap"> </span>""</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dns-priority: <span style="white-space:pre-wrap"> </span>0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.addresses: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.gateway: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.routes: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.route-metric: <span style="white-space:pre-wrap"> </span>-1</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.route-table: <span style="white-space:pre-wrap"> </span>0 (unspec)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.routing-rules: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.ignore-auto-routes: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.ignore-auto-dns: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.never-default: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.may-fail: <span style="white-space:pre-wrap"> </span>yes</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.ip6-privacy: <span style="white-space:pre-wrap"> </span>-1 (unknown)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.addr-gen-mode: <span style="white-space:pre-wrap"> </span>stable-privacy</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dhcp-duid: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dhcp-send-hostname: <span style="white-space:pre-wrap"> </span>yes</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.dhcp-hostname: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">ipv6.token: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.number: <span style="white-space:pre-wrap"> </span>*99***1#</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.username: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.password: <span style="white-space:pre-wrap"> </span><hidden></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.password-flags: <span style="white-space:pre-wrap"> </span>0 (none)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.apn: <span style="white-space:pre-wrap"> </span>vf-viriciti</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.network-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.pin: <span style="white-space:pre-wrap"> </span><hidden></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.pin-flags: <span style="white-space:pre-wrap"> </span>0 (none)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.home-only: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.device-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.sim-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.sim-operator-id: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">gsm.mtu: <span style="white-space:pre-wrap"> </span>auto</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">proxy.method: <span style="white-space:pre-wrap"> </span>none</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">proxy.browser-only: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">proxy.pac-url: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">proxy.pac-script: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"><a href="http://general.name/" target="_blank">GENERAL.NAME</a>: <span style="white-space:pre-wrap"> </span>gsm-cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.UUID: <span style="white-space:pre-wrap"> </span>87994115-cbd9-48c5-b2a3-71000180722e</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.DEVICES: <span style="white-space:pre-wrap"> </span>cdc-wdm0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.STATE: <span style="white-space:pre-wrap"> </span>activated</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.DEFAULT: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.DEFAULT6: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.SPEC-OBJECT: --</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.VPN: <span style="white-space:pre-wrap"> </span>no</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.DBUS-PATH: <span style="white-space:pre-wrap"> </span>/org/freedesktop/NetworkManager/ActiveConnection/6</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.CON-PATH: <span style="white-space:pre-wrap"> </span>/org/freedesktop/NetworkManager/Settings/5</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.ZONE: <span style="white-space:pre-wrap"> </span>--</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">GENERAL.MASTER-PATH: --</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.ADDRESS[1]: <span style="white-space:pre-wrap"> </span><a href="http://10.141.0.108/29" target="_blank">10.141.0.108/29</a></font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.GATEWAY: <span style="white-space:pre-wrap"> </span>10.141.0.109</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.ROUTE[1]: <span style="white-space:pre-wrap"> </span>dst = <a href="http://10.141.0.104/29" target="_blank">10.141.0.104/29</a>, nh = 0.0.0.0, mt = 700</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.ROUTE[2]: <span style="white-space:pre-wrap"> </span>dst = <a href="http://0.0.0.0/0" target="_blank">0.0.0.0/0</a>, nh = 10.141.0.109, mt = 700</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.DNS[1]: <span style="white-space:pre-wrap"> </span>10.1.2.199</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP4.DNS[2]: <span style="white-space:pre-wrap"> </span>10.1.2.200</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">IP6.GATEWAY: <span style="white-space:pre-wrap"> </span>--</font></div></div></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>After the connection becomes active, the wwan0 interface comes up and we get an IP from the gateway.</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="color:rgb(0,0,0)"><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"># ifconfig</font></div><div dir="auto" style="overflow-wrap: break-word;"><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace">wwan0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> inet 10.141.0.108 netmask 255.255.255.248 destination 10.141.0.108</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> RX packets 0 bytes 0 (0.0 B)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> RX errors 0 dropped 0 overruns 0 frame 0</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> TX packets 8 bytes 397 (397.0 B)</font></div><div dir="auto" style="overflow-wrap: break-word;"><font face="monospace"> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0</font></div></div></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace"><br></font></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>But this is where it ends. We can only receive data but we cannot transmit data. We have tried TCP, UDP and ICMP packets.</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>While pinging our device, the host PC outputs:</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace"># ping 10.141.0.108</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">PING 10.141.0.108 (10.141.0.108): 56 data bytes</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">Request timeout for icmp_seq 0</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">Request timeout for icmp_seq 1</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">Request timeout for icmp_seq 2</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">Request timeout for icmp_seq 3</font></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>The device itself, outputs:</i></div><div dir="auto" style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><br></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">#tcpdump -vi wwan0</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">tcpdump: listening on wwan0, link-type RAW (Raw IP), capture size 262144 bytes</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">20:37:42.756650 IP (tos 0x0, ttl 251, id 19993, offset 0, flags [none], proto ICMP (1), length 84) 10.1.0.41 > <a href="http://10.141.0.108/" target="_blank">10.141.0.108</a>: ICMP echo request, id 62574, seq 0, length 64</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">20:37:42.797093 IP (tos 0x0, ttl 251, id 14636, offset 0, flags [none], proto ICMP (1), length 84) 10.1.0.41 > <a href="http://10.141.0.108/" target="_blank">10.141.0.108</a>: ICMP echo request, id 62574, seq 1, length 64</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">20:37:42.797103 IP (tos 0x0, ttl 251, id 64676, offset 0, flags [none], proto ICMP (1), length 84) 10.1.0.41 > <a href="http://10.141.0.108/" target="_blank">10.141.0.108</a>: ICMP echo request, id 62574, seq 2, length 64</font></div><div dir="auto" style="color:rgb(0,0,0)"><font face="monospace">20:37:43.517041 IP (tos 0x0, ttl 251, id 23802, offset 0, flags [none], proto ICMP (1), length 84) 10.1.0.41 > <a href="http://10.141.0.108/" target="_blank">10.141.0.108</a>: ICMP echo request, id 62574, seq 3, length 64</font></div><font color="#888888" style=""><div dir="auto" style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><i>Best regards,</i></div><div style="font-family:Arial,Helvetica,sans-serif;color:rgb(0,0,0)"><i>Simon</i></div></font></div></div>