After installing the Sixfab LTE Quectel modem package on a Raspberry Pi 4 with 8GB RAM, it has been observed that all networks created outside of the Sixfab interface do not allow any routing between networks. Here are the captured outputs for ip route , ifconfig , route -n , iptables , and ping results from eth0 , wlan0 , and docker0 interfaces:
pi:~$ ip route
default via 10.15.10.1 dev eth0 proto dhcp src 10.15.10.147 metric 100
default via 192.168.225.1 dev enx823c8a21212a proto dhcp src 192.168.225.46 metric 10000
8.8.4.4 via 10.15.10.1 dev eth0 proto dhcp src 10.15.10.147 metric 100
8.8.8.8 via 10.15.10.1 dev eth0 proto dhcp src 10.15.10.147 metric 100
10.15.10.0/24 dev eth0 proto kernel scope link src 10.15.10.147 metric 100
10.15.10.1 dev eth0 proto dhcp scope link src 10.15.10.147 metric 100
10.42.0.0/24 dev wlan0 proto kernel scope link src 10.42.0.1 metric 600
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.225.0/24 dev enx823c8a21212a proto kernel scope link src 192.168.225.46 metric 10000
pi:~$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:5f:5d:0e:0e txqueuelen 0 (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
enx823c8a21212a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.225.46 netmask 255.255.255.0 broadcast 192.168.225.255
inet6 fe80::803c:8aff:fe21:212a prefixlen 64 scopeid 0x20<link>
ether 82:3c:8a:21:21:2a txqueuelen 1000 (Ethernet)
RX packets 288 bytes 19995 (19.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 308 bytes 27628 (27.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.15.10.147 netmask 255.255.255.0 broadcast 10.15.10.255
inet6 fe80::da3a:ddff:fe90:de8e prefixlen 64 scopeid 0x20<link>
ether d8:3a:dd:90:de:8e txqueuelen 1000 (Ethernet)
RX packets 53570 bytes 6284157 (6.2 MB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 38641 bytes 6255808 (6.2 MB)
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<host>
loop txqueuelen 1000 (Local Loopback)