Добрый день,
у меня та же самая проблема, тоже периодически отваливается 4G модуль.
Устройство: WB6.7.2
ПО: wb-2104
Доступ в интернет настроен через PPP
root@wirenboard:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.42.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
root@wirenboard:~# ifconfig -a
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 68:27:19:82:8a:e1 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 68:27:19:82:e6:2d txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 62034 bytes 4441675 (4.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 62034 bytes 4441675 (4.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ppp0: flags=4240<POINTOPOINT,NOARP,MULTICAST> mtu 1500
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 2 bytes 14 (14.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4 bytes 75 (75.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
sit0: flags=128 mtu 1480
sit txqueuelen 1 (IPv6-in-IPv4)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
usb0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 96:99:62:e9:d1:44 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.42.1 netmask 255.255.255.0 broadcast 192.168.42.255
inet6 fe80::d6d2:d6ff:fec8:ed14 prefixlen 64 scopeid 0x20
ether d4:d2:d6:c8:ed:14 txqueuelen 1000 (Ethernet)
RX packets 4984 bytes 361787 (353.3 KiB)
RX errors 0 dropped 27 overruns 0 frame 0
TX packets 7361 bytes 867600 (847.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan1: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether d6:d2:d6:c8:ed:14 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0