My Mandrake 10.1 has been serving as gateway/firewall on my Lan without problem until I installed a new eth1 network card, which works fine, but I have problems with eth0, which is my Internet connection. However, I need to setup eth0 after every reboot before my Internet conncetion works again. It simply fails to initialize during boot (it uses dhcp). If I turn "hot plugging" off it starts to tell me that it is activated, but it isn't when I try to connect. I am just setting up the network connection again everytime because that is the only way I now, how to make it work again.

Any Ideas what could cause this?

Help is tremendously appreciated.

MJ:

caveat: I'm not an expert here, but the following strikes me as a logical approach to troubleshooting your current situation.

Have you confirmed that your dhcp client is still running? Perhaps you configured it off when installing and setting up eth1?

Less likely a problem would be the dhcp server, which I presume is running in your ISP's modem.

Check your boot messages to see that your gateway machine is requesting and receiving a dhcp lease. Where is the transaction breaking down?

As root, should dump the transactions.

You should see DHCPREQUEST messages followed by DHCPACK acknowledgements, followed by messages binding the delivered addr to eth0.

Hope this helps....

Walt

Thanks a lot for the reply.

The log is full of these messages:
....
Oct 30 10:56:40 augustus dhclient: DHCPREQUEST on eth0 to 80.166.139.21 port 67
Oct 30 10:56:40 augustus dhclient: DHCPACK from 80.166.139.21
Oct 30 10:56:40 augustus dhclient: bound to 82.93.131.42 -- renewal in 1657 seconds.
....

I am not sure it has something to do with dhcp since it seems to work. I noticed something else:

My command prompt usually always displays my server name e.g.

[root@augustus]

but currently is uses a name supplied by the dhcp server of the ISP:

[root@0x523f675b.slnxx3.adsl-dhcp.tele.dk]

This means that eth0 is not getting the correct domain name. However, I do not know if this is has anything to do with my problem. I use a different domain name in my server configuration than the one provided by the ISP.

I am currently clueless and I am just trying out different things.

i believe you want to add some lines to the /etc/rc? to get it to automaticaly run when entering ? runlevel. you should be able to do it with some sort of command as well(rc-update add * default for gentoo), but i don't know what that is in mandrake

The problem is caused by the new network card, which is a TrendNet TEG-PCITXR that uses the Realtek 8169 chip for gigabit. After I reinstalled the old card everything worked immediatelly again without that I had to do anything. The driver that came with the card only supported the 2.4.x kernel but I use the 2.6.x kernel. It seems that my kernel used the 8139 driver for the 8169, which seems strange but I might be mistaken. I then tried to install a new driver that I downloaded from realtek's site but that did not work at all. Now I am trying to upgrade the kernel to the one used in Mandriva 2006 to see if it supports the card.

Does anyone have experiences with this card in Mandrake/Mandriva distriution?