eth0, eth1, dhcp, slackware 11 problem

q3noob · 07-30-2007, 09:19 PM

Hi guys

I'm trying to help a friend of mine to set up his router.

rc.inet1.conf:

# Config information for eth0:
IPADDR[0]=""
NETMASK[0]=""
USE_DHCP[0]="yes"
DHCP_HOSTNAME[0]=""

# Config information for eth1:
IPADDR[1]="192.168.0.1"
NETMASK[1]="255.255.255.0"
USE_DHCP[1]=""
DHCP_HOSTNAME[1]=""

eth0 is conected to a modem, and cant be set to static ip.

The problem is, when eth0 is plugged alone, it works,
when both eth0 and eth1 are plugged, after 30 or so seconds
eth0 loses its ip and dissapears.

Any ideas?

davimint · 07-30-2007, 10:05 PM

I'm still learning so forgive me if this sounds like a bad question.

What type of router and how is it being connected ?

For example is it a dsl connection or cable modem being used.

Is it wired like this:
cable modem > wireless router > wired pc's & wireless pc's

sparc86 · 07-30-2007, 10:17 PM

Why don't you try to setup the eth0 using a static IP, like you did to eth1?

Please tell us if it worked for you.

pdw_hu · 07-31-2007, 02:03 AM

Quote:

Originally Posted by sparc86

Why don't you try to setup the eth0 using a static IP, like you did to eth1?

Please tell us if it worked for you.

As he said he can't. My ISP does the same, it changes IP-s very randomly, sometimes after a few weeks, sometimes after a month, and currently i've had the same IP for over 3 months now.

IPADDR[1]="192.168.0.1"

Set this to something else. This is usually the router/modems IP address.

sparc86 · 07-31-2007, 07:45 AM

Why exactly he says that he cannot?

Troubles with dhcpcd, maybe? Tell him to put "no" at the option USE_DHCP[0]="yes"

Did it work?

q3noob · 07-31-2007, 09:26 AM

it seems it was the mac address of eth0 that causes the problem.

thank you guys for fast replies!