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NIC problem

Peter Chatterton

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Post the output of:


# lsmod


and also post your /etc/modprobe.conf and /etc/sysconfig/network-scripts/ifcfg-eth0.


lsmod will give all modules loaded so we can see if the proper module for your nic loaded which I believe is 8139too. Modprobe.conf will show what modules should be loading and ifcfg-eth0 is the network configuration script. Finally, post the output of:


# ifconfig


That should give the current status of all your network interfaces. Note, both the above commands must be run as root which I assume you are familiar with since you apparently ran ifup from the command line. If you're not sure what I'm talking about post back and I'll go into more detail. You may also want to post how you are connecting to the internet since I assume that is your real problem. With this info we should be able to figure out what is going on.

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Hi pmpatrick , thanks for replying.


mii	 8139too

alias eth0 8139too
alias [some audio stuff]
install [some usb stuff]

NEEDHOSTNAME=yes	[this might be a problem as i didn't give it one]
(I've skipped a few lines that didn't look useful)	

Link encap: Ethernet
HWaddr 00 ... 00	[is this the show stopper?]
RX packets: 0  Errors: 452  Dropped: 0  Overruns: 452  frame: 0
TX packets: 0  Errors: 0  Dropped: 0  Overruns: 0  carrier: 0	
collisions: 0 txqueuelen: 1000
RX = TX bytes = 0
Base addr 0xef00
Int: 21


I'm connecting the Linux, as with the XP, directly to a SpeedStream 5200 ADSL modem.


Here's some output from XP:


Windows IP Configuration
Ethernet adapter Local Area Connection 6:
		Connection-specific DNS Suffix  . :
		IP Address. . . . . . . . . . . . :
		Subnet Mask . . . . . . . . . . . :
		Default Gateway . . . . . . . . . :
PPP adapter Sympatico HSE:
		Connection-specific DNS Suffix  . :
		IP Address. . . . . . . . . . . . :
		Subnet Mask . . . . . . . . . . . :
		Default Gateway . . . . . . . . . :


ping sympatico.ca works on Linux but not on XP.

I tried setting the Host Name on Linux to sympatico.ca, but it didn't help.



Hope this helps, and thanks again,


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I think might be an ipv6 problem. Add this to /etc/modprobe.conf:


alias net-pf-10 off


then reboot. See if that helps make it any better.

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As long as you typed it exactly as I wrote it, it should have disabled ipv6. You can check with an ifconfig -a, and if it says ipv6 anywhere, then it's still enabled.

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Yes, it's safe to leave it with ipv6 disabled, since chances are you won't need ipv6 for anything locally anyway. I never have, and probably neither have most people.


Reason I suggested this is because that realtek cards usually have a network problem that's resolved when ipv6 is disabled. I think the only time I've seen problems with the hw address being zeros was either due to a bad module or wrong module being loaded for the card, or, that the card was faulty.

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Are there any NIC related error messages posted in /var/log/messages during bootup?



I did an install from scratch yesterday. At one point the modem did seem to be working, normally the leds don't show much action.


These show up quite often in /var/log/messages:


eth0: Realtek @ 0xd0962f00, 00 ... 00, IRQ 21
  no MII transceiver! Assuming SYM
  link up, 10Mbps, half duplex, lpa 0x0

BTW the DHCP timeout used to be 0, which I've now set to 5 secs.


I can't setup a new conn. in Control Center.

It won't accept any Host name, even, for what is supposedly an optional field.

In Manage hosts it shows only one (local host).

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What DHCP address should you be getting? If you're not receiving DHCP, then I would suggest assigning a static IP address in the same range of IP addresses you are expecting via DHCP. Then, you can ping the router or whatever is giving you the IP address via DHCP to see if you have communication.


If you have, then there is a problem with your machine receiving DHCP for some reason within Mandriva.

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