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Network Requests Failing ​

If you notice that your API logs show failed requests to services like GitHub or SteamCMD, it may be caused by a search domain set by your DHCP server.

Confirming Search Domains ​

To check if your DHCP server is setting a search domain, review your /etc/resolv.conf file. Look for any search or domain entries - if there's anything other than standard DNS servers, you may have this issue.

Change Search Domain ​

Important: Do not directly edit /etc/resolv.conf as it will be overwritten on reboot by your system's network management service.

Method 1: Using systemd-resolved (Ubuntu 18.04+, most modern Linux) ​

  1. Create or edit the systemd-resolved configuration:

    bash
    sudo nano /etc/systemd/resolved.conf

  2. Add or modify these lines:

    [Resolve]
Domains=~.

  3. Restart systemd-resolved:

    bash
    systemctl restart systemd-resolved

Method 2: Using Netplan (Ubuntu with Netplan) ​

  1. Find your netplan configuration file:

    bash
    ls /etc/netplan/

  2. Edit the configuration file (usually 50-cloud-init.yaml or similar):

    bash
    nano /etc/netplan/50-cloud-init.yaml

  3. Update the search to be an empty array

    yaml
    search: []

  4. Apply the changes:

    bash
    netplan apply

Method 3: Using NetworkManager ​

  1. Edit the connection configuration:

    bash
    nmcli connection modify "connection-name" ipv4.dns-search ""

  2. Restart NetworkManager:

    bash
    sudo systemctl restart NetworkManager

Method 4: DHCP Client Configuration ​

  1. Edit the DHCP client configuration:

    bash
    sudo nano /etc/dhcp/dhclient.conf

  2. Add these lines to override DHCP-provided DNS:

    supersede domain-search "";

  3. Restart networking:

    bash
    sudo systemctl restart networking

Verification ​

After applying any method, verify your changes:

  1. Check the current resolv.conf:

    bash
    cat /etc/resolv.conf

  2. Test DNS resolution:

    bash
    nslookup github.com

  3. Reboot and verify the changes persist:

    bash
    sudo reboot