Hi all,
I've been trying to connect to an embedded board via a network. Seeing ifconfig said no ip I set about setting this up and setting route etc.
ifconfig eth0 192.168.0.8 net mask ..... up etc.

Still no luck.

I then noticed the terminal was putting an error message
udhcpc[280]: sending discover ...

After a search I found this is a type of protocol for small systems. I them searched the file system and found udhcpc and a file default.sh.
One line showed ifconfig 0.0.0.0 so I changed this is a valid address. There was also some gw stuff set to 0.0.0.0 but I didn't change this. I rebooted and no effect.

Can someone help me with this. Is there a command to stop, set ip, set gateway set route etc. Then reboot. So do I need to do something with default.

I'm a programmer and rarely touch this stuff so please be gentle :s Thanks!

should add I tried

ifconfig eth0 192.168.0.8 netmask 255.255.255.0 up
route add default gw 192.168.0.1

192.168.0.1 is my router

tried ping 192.168.0.8 to self is OK
ping 192.168.0.1 get an error or any other ip

Yes, but before change configuration for eth0 to STATIC, to prevent DHCP client asks for IPs.


Try:
ifconfig eth0 down
ifconfig eth0 192.168.0.8 netmask 255.255.255.0 up
route add default gw 192.168.0.1

Check it after with: "ifconfig eth0" and "route -n"

No luck. ifconfig eth0 shows the correct ip and netmask, but ping 192.168.0.1 won't see the server or anyother pc.

One strange thing
#ping localhost shows 127.0.0.1

also if I use any udhcpc command it changes my IP (without me asking) to 127.0.0.8 , but my udhcpc default.script shows the correct IP I've entered :s. It's as if it's getting the manufacturers host IP, maybe this is set somewhere?

I needed to go into /etc/rc.sysinit and change the route in there.
The usual route command does not appear to override it on this system.


On testing this does not work ifconfig shows it's all OK and I thought I could ping other servers.
However... I've found I cannot ping the embedded board, it shows

From 192.168.0.6 icmp_seq=1 Destination Host Unreachable

Then on further testing on my embedded board I found I can ping any 192.168.0. IP even when no PC with than IP exists.
I think it's some sort of loopback.

Anyway I'm still looking for help please.

Send output here for "ifconfig eth0" and "route -n"

Thanks

Hi it's

eth0 Link encap:Ethernet HWaddr 0E:00:00:EA:18:F1
inet addr:192.168.0.8 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 packages:142 errors:0 dropped:0 overruns:0 frame:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo link encap:Local loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packages:16 errors:0 dropped:0 overruns:0 frame:0
collisions:0 txqueuelen:1000
RX bytes:1664 (1.6 B) TX bytes:1664 (1.6 B)

route -n

Kernel IP routing table
Destinations Gateway genmask Flags Metric Ref Use IFace
192.168.0.0 0.0.0.0 255.255.255.0 u 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 lo


Thanks

Your default route sends any packets different from 192.168.0.1-255 to local host.
Is it what you want?

if I understand what you mean all my PC's are on 192.186.0. 1-8.

My router is on 192.168.0.1. My PC 192.168.0.6, the embedded board which I'm showing is set as above.

If I ping and IP 192.186.0. 0-255 from the embedded board it sends replies (that's why I thought it was working :s). If I ping the router from my pc it's seen, if I ping the embedded board from my pc it gives a time out error.

So I think the embedded board's pings are false, due to the fact I get a reply on any 192.168.0...

What I want is to be able to communicate via the Ethernet with the embedded board. But I can't see or ping it from any PC on the network. But it seems to report it communicate with any ip on the network even ones that don't exist :s

I seems to show its configured OK as afr as I can see but my knowledge is limited.

add route to local host:
route add -net 127.0.0.0 netmask 255.0.0.0 gw 0.0.0.0 lo


And delete: route del -net 0.0.0.0

I'll give it a try in the morning!

Hi no joy :s I just get an error



Can anyonbe help out with this? Sorry All it's driving me mad for Christmas :s

one other thing if I type netstat -r it give the same result as route -n except the 0.0.0.0 for the ip gateway is replaced by a *