root@thunderc:/ # busybox ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1312 (1.2 KiB) TX bytes:1312 (1.2 KiB)
rmnet0 Link encap:Ethernet HWaddr CA:19:91:FC:8D: D5
inet6 addr: fe80::c819:91ff:fefc:8dd5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:2000 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:1636 (1.5 KiB)
wlan0 Link encap:Ethernet HWaddr 14:7D:C5:A1:3E:F3
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:98 errors:0 dropped:19 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7950 (7.7 KiB) TX bytes:4063 (3.9 KiB)
This command shows that the data interface (rmnet0) is active, so I think it's okay at the kernel level.
"Ifconfig is used to configure the kernel-resident network interfaces. It is used at boot time to set up interfaces as necessary. After that, it is usually only needed when debugging or when system tuning is needed."
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1312 (1.2 KiB) TX bytes:1312 (1.2 KiB)
rmnet0 Link encap:Ethernet HWaddr CA:19:91:FC:8D: D5
inet6 addr: fe80::c819:91ff:fefc:8dd5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:2000 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:1636 (1.5 KiB)
wlan0 Link encap:Ethernet HWaddr 14:7D:C5:A1:3E:F3
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:98 errors:0 dropped:19 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7950 (7.7 KiB) TX bytes:4063 (3.9 KiB)
This command shows that the data interface (rmnet0) is active, so I think it's okay at the kernel level.
"Ifconfig is used to configure the kernel-resident network interfaces. It is used at boot time to set up interfaces as necessary. After that, it is usually only needed when debugging or when system tuning is needed."