联通的卡和移动的卡都测试了，测试电脑(Ubuntu)和路由器(openwrt)和Windows都是这个情况，表现为能访问短信/电话，能通过QMI拿到ip地址，但是就是无法连接网络，ping网关、tcp尝试连接业务服务器均无相应。sim卡在其他设备测试是可以用的。
日志：
ModemManager[81031]: <info> ModemManager (version 1.20.6) starting in system bus...
ModemManager[81031]: <info> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0': not supported by any plugin
ModemManager[81031]: <info> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:02.2/0000:03:00.0': not supported by any plugin
ModemManager[81031]: <warn> [ttyUSB0/probe] failed to parse QCDM version info command result: -7
ModemManager[81031]: <info> [device /sys/devices/pci0000:00/0000:00:08.1/0000:35:00.4/usb3/3-2] creating modem with plugin 'quectel' and '6' ports
ModemManager[81031]: <info> [base-manager] modem for device '/sys/devices/pci0000:00/0000:00:08.1/0000:35:00.4/usb3/3-2' successfully created
ModemManager[81031]: <warn> [modem0] couldn't query SIM slots: QMI SIM slot switch operation not supported
ModemManager[81031]: <warn> [modem0/sim0] couldn't load list of emergency numbers: uninitialized emergency numbers list
ModemManager[81031]: <warn> [modem0] couldn't load list of own numbers: Couldn't get MSISDN: QMI protocol error (16): 'NotProvisioned'
ModemManager[81031]: <warn> [modem0] couldn't load ESN: Device doesn't report a valid ESN
ModemManager[81031]: <warn> [modem0] couldn't load supported assistance data types: LOC service: general failure
ModemManager[81031]: <info> [modem0] state changed (unknown -> disabled)
ModemManager[81031]: <info> [modem0] state changed (disabled -> enabling)
ModemManager[81031]: <info> [modem0] simple connect started...
ModemManager[81031]: <info> [modem0] simple connect state (4/10): wait to get fully enabled
ModemManager[81031]: <info> [modem0] power state updated: on
ModemManager[81031]: <info> [modem0] state changed (enabling -> enabled)
ModemManager[81031]: <info> [modem0] simple connect state (5/10): wait after enabled
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (unknown -> registering)
ModemManager[81031]: <info> [modem0] simple connect state (6/10): register
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] state changed (enabled -> registered)
ModemManager[81031]: <info> [modem0] simple connect state (7/10): wait to get packet service state attached
ModemManager[81031]: <info> [modem0] simple connect state (8/10): bearer
ModemManager[81031]: <info> [modem0] simple connect state (9/10): connect
ModemManager[81031]: <info> [modem0] state changed (registered -> connecting)
ModemManager[81031]: <info> [modem0/bearer1] QMI IPv4 Settings:
ModemManager[81031]: <info> [modem0/bearer1] address: 10.10.13.223/26
ModemManager[81031]: <info> [modem0/bearer1] gateway: 10.10.13.224
ModemManager[81031]: <info> [modem0/bearer1] DNS #1: 218.2.2.2
ModemManager[81031]: <info> [modem0/bearer1] DNS #2: 218.4.4.4
ModemManager[81031]: <info> [modem0/bearer1] MTU: 1500
ModemManager[81031]: <info> [modem0/bearer1] couldn't start network: QMI protocol error (14): 'CallFailed'
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (6,38): [3gpp] network-failure
ModemManager[81031]: <info> [modem0/bearer1] reloading stats is supported by the device
ModemManager[81031]: <info> [modem0] state changed (connecting -> connected)
ModemManager[81031]: <info> [modem0] simple connect state (10/10): all done
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (3,1028): [cm] emm-detached
ModemManager[81031]: <info> [modem0] state changed (connected -> registered)
ModemManager[81031]: <info> [modem0/bearer1] connection #1 finished: duration 0s, tx: 0 bytes, rx: 0 bytes
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] simple connect started...
ModemManager[81031]: <info> [modem0] simple connect state (6/10): register
ModemManager[81031]: <info> [modem0] simple connect state (7/10): wait to get packet service state attached
ModemManager[81031]: <warn> [modem0/bearer1] reloading stats failed: Couldn't get packet statistics: QMI protocol error (15): 'OutOfCall'
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] simple connect state (8/10): bearer
ModemManager[81031]: <info> [modem0] simple connect state (9/10): connect
ModemManager[81031]: <info> [modem0] state changed (registered -> connecting)
ModemManager[81031]: <info> [modem0] state changed (connecting -> registered)
ModemManager[81031]: <info> [modem0/bearer1] QMI IPv4 Settings:
ModemManager[81031]: <info> [modem0/bearer1] address: 10.10.13.223/26
ModemManager[81031]: <info> [modem0/bearer1] gateway: 10.10.13.224
ModemManager[81031]: <info> [modem0/bearer1] DNS #1: 218.2.2.2
ModemManager[81031]: <info> [modem0/bearer1] DNS #2: 218.4.4.4
ModemManager[81031]: <info> [modem0/bearer1] MTU: 1500
ModemManager[81031]: <info> [modem0/bearer1] couldn't start network: QMI protocol error (14): 'CallFailed'
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (6,38): [3gpp] network-failure
ModemManager[81031]: <info> [modem0/bearer1] reloading stats is supported by the device
ModemManager[81031]: <info> [modem0] state changed (registered -> connected)
ModemManager[81031]: <info> [modem0] simple connect state (10/10): all done
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (3,1028): [cm] emm-detached
ModemManager[81031]: <info> [modem0] state changed (connected -> registered)
ModemManager[81031]: <info> [modem0/bearer1] connection #2 finished: duration 0s, tx: 0 bytes, rx: 0 bytes
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] simple connect started...
ModemManager[81031]: <info> [modem0] simple connect state (6/10): register
ModemManager[81031]: <info> [modem0] simple connect state (7/10): wait to get packet service state attached
ModemManager[81031]: <warn> [modem0/bearer1] reloading stats failed: Couldn't get packet statistics: QMI protocol error (15): 'OutOfCall'
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] simple connect state (8/10): bearer
ModemManager[81031]: <info> [modem0] simple connect state (9/10): connect
ModemManager[81031]: <info> [modem0] state changed (registered -> connecting)
ModemManager[81031]: <info> [modem0] state changed (connecting -> registered)
ModemManager[81031]: <info> [modem0/bearer1] QMI IPv4 Settings:
ModemManager[81031]: <info> [modem0/bearer1] address: 10.10.13.223/26
ModemManager[81031]: <info> [modem0/bearer1] gateway: 10.10.13.224
ModemManager[81031]: <info> [modem0/bearer1] DNS #1: 218.2.2.2
ModemManager[81031]: <info> [modem0/bearer1] DNS #2: 218.4.4.4
ModemManager[81031]: <info> [modem0/bearer1] MTU: 1500
ModemManager[81031]: <info> [modem0/bearer1] couldn't start network: QMI protocol error (14): 'CallFailed'
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (6,38): [3gpp] network-failure
ModemManager[81031]: <info> [modem0/bearer1] verbose call end reason (3,1028): [cm] emm-detached
ModemManager[81031]: <info> [modem0/bearer1] connection #3 finished: duration 0s, tx: 0 bytes, rx: 0 bytes
ModemManager[81031]: <info> [modem0/bearer1] reloading stats is not supported by the device
ModemManager[81031]: <info> [modem0] state changed (registered -> connected)
ModemManager[81031]: <info> [modem0] simple connect state (10/10): all done
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (home -> registering)
ModemManager[81031]: <info> [modem0] 3GPP registration state changed (registering -> home)
ModemManager[81031]: <warn> [modem0] couldn't load network timezone from the current network
# ifconfig wwan0
wwan0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 10.10.13.223 netmask 255.255.255.192 destination 10.10.13.223
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 230 bytes 30312 (30.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
# ip r
default via 10.10.13.224 dev wwan0 proto static metric 700
# ping 10.10.13.224
# curl 47.93.12.178
使用 AT+QCFG=“usbnet” 指令切换模式后，ECM模式可以使用，但是RmNet和mbim都不行