Prevent dhcpcd from changing default gateway?

MarleyGPN · 08-31-2006, 12:55 AM

Hi there,

I have Slackware 10.2 installed with kernel version 2.6.17, with three network interfaces. eth0, eth1, and eth2. eth0 is hooked up to my private lan, and it is set statically. eth1 is connected to my university and is configured using dhcpcd. eth2 is connected to Comcast and is also configured using dhcpcd. I would like the Comcast (eth2) to be the default gateway. Every time my university ip address changes it takes over the default gateway. Is there any way to configure dhcpcd to ignore the default gateway from the dhcp server? Also is there a way to configure it to ignore the dns server entries in the dhcp request?

Thanks,
MarleyGPN

Micro420 · 08-31-2006, 01:21 AM

Funny,I was also dealing with this problem at work today with a user's laptop using Ubuntu 5.10.

We found that the profiles and settings for the interfaces (eth0, eth1, eth2, etc...) were located in /etc/network/interfaces. Additionally, gnome's networking profiles were located in /etc/gnome-system-tools/networking/profiles.xml. Just change the settings in there and it will force it to be static to whatever is in the file.

With slackware, maybe the profiles are in /etc/sysconfig/network. This should get you in the right direction.

Micro420 · 09-01-2006, 01:12 PM

I also want to add that the DNS can be forced to stay the same by editing the /etc/resolv.conf file

david_ross · 09-01-2006, 01:37 PM

From "man dhcpcd":

Code:

       -G [gateway]
              Prevents  dhcpcd from installing default routes provided by DHCP
              server.  If optional gateway ip address  parameter  is  supplied
              then use it for default route.

       -R     Prevents  dhcpcd  from  replacing  existing <etcDir>/resolv.conf
              file.