How to manually configure ethernet from Busybox

[Stefan Seyfried]

Hi Vesta,

Am 20.04.19 um 18:13 schrieb Vesta:
> Hi,
> 
> Linux version 2.6.26.5, ARM Linux Kernel on embedded device.
> How to manually set up Ethernet connection from BusyBox v1.10.2 rescue shell (ash)?

JFTR: your issue is not a busybox problem, you probably need to read up
on IPv4 networking basics.

> I mounted the main virtual file systems, then tried:
> 
> # ifconfig lo 127.0.0.1
> # ifconfig eth0 hw ether 88:75:56:05:2B:24
> # ifconfig eth0 192.168.15.1 netmask 255.255.255.0 broadcast 192.168.15.255
> # ifconfig eth0 up
> # route add -net 192.168.15.0/24 eth0
> # ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 88:75:56:05:2B:24
>           inet addr:192.168.15.1  Bcast:192.168.15.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>           Interrupt:22
> 
> # ping 192.168.15.100
> PING 192.168.15.100 (192.168.15.100): 56 data bytes
> From 192.168.15.100 icmp_seq=0 timed out

Everything is fine here, your device is sending out the packets, but not
getting a response...

> ... ...
> 
> Device is also unreachable when ping it from computer.
> ping 192.168.15.1
> connect: Network is unreachable

This machine is configured wrong. It does not know how to reach 192.168.15.1

-- 
Stefan Seyfried

"For a successful technology, reality must take precedence over
 public relations, for nature cannot be fooled." -- Richard Feynman