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This is going to seem like an odd request, but it's necessary. I have a wireless router that is not to be used for internet access. The current router that I have is a DLink DIR-626L and I use it to connect to a few embedded devices for an application that I am working on.

For internet, I am hardwired by ethernet into the network. The problem that I am having is that if I connect to my DLink WiFi router, internet traffic wants to go through the DLink router instead over the ethernet port and the DLink router has no internet connection. I know this is going on because if I try to pull up a webpage I get a D-Link error page saying that I am not connected to the internet.

Looking at some other questions, it seems like my router might be advertising itself as a "gateway" and I can't seem to find a way to turn that off by digging through the settings.

Is there a way to tell Linux that all internet traffic should go over the ethernet port?

A few specifications:

-All of the devices that are broadcasting to the router are doing so over UDP. They are just spitting out data to a static IP over a dedicated port.

-I am using Linux Mint 17.2.

-I had this setup working with a small battery powered TP-Link router (TL-MR3040). I didn't do anything special for this, it just "worked."

1 Answer 1

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What you can do is configure your dhcp client to ignore the router attribute that comes in the DHCP reply.

Edit your /etc/dhcp/dhclient.conf that defines which atributes you receive via dhcp, and take out from the line that starts with request the word routers.

request subnet-mask, broadcast-address, time-offset; # routers;

After editing, do

sudo service networking restart
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  • Thanks for your reply. Here's what I tried and I'm having the same issue: request subnet-mask, broadcast-address, time-offset, #routers, domain-name, domain-name-servers, domain-search, host-name, dhcp6.name-servers, dhcp6.domain-search, netbios-name-servers, netbios-scope, interface-mtu, rfc3442-classless-static-routes, ntp-servers, dhcp6.fqdn, dhcp6.sntp-servers; where routers is the end of a line. I should note that my wired internet goes through a different router. I basically want to turn off internet access over WiFi.
    – tomsrobots
    Nov 20, 2015 at 18:20
  • "sudo service networking restart" please Nov 20, 2015 at 18:23
  • I rebooted the computer. I couldn't run "sudo service networking restart" beacuse it was saying "Job failed while stopping." However, I did use "sudo service network-manager restart" which would go through. In either respect, I did reboot the computer to load the new config file. Is there a way to turn off the router as a gateway?
    – tomsrobots
    Nov 20, 2015 at 18:46
  • yes, deleting the route... Nov 20, 2015 at 18:47
  • I had to comment out everything past "routers" and not just routers. It appears to be working now. Thank you.
    – tomsrobots
    Nov 20, 2015 at 19:02

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