GPT-4 Conversation #1096624612512649380

[vale sorrel]

My linux computer takes around a minute or so after booting up before it can access the internet. It runs on systemd with networkmanager and dnsmasq for DNS. I think that it usually lets me ping IPs after around 30 seconds but takes a lot longer to let me resolve domains. It has done this even when I used systemd-resolved for DNS resolving

[near bridge]

It seems like there might be a delay caused by DNS resolution. Here are some troubleshooting steps you can take to potentially resolve the issue:

1. Check your DNS configuration:
   Most Linux distributions use /etc/resolv.conf for DNS settings. Open this file using your favorite text editor to ensure your DNS server configurations are correct. Make sure to have appropriate nameserver IPs listed, like nameserver 8.8.8.8 (Google DNS) or nameserver 1.1.1.1 (Cloudflare DNS).

2. Disable dnsmasq:
   You mentioned you're using dnsmasq, but let's try disabling it temporarily to see if it's causing the issue. Edit the /etc/NetworkManager/NetworkManager.conf file and comment out or remove the line dns=dnsmasq. Then restart NetworkManager using:

sudo systemctl restart NetworkManager

3. Monitor logs:
   Check the logs of NetworkManager, dnsmasq, and systemd-resolved to see if there are any errors or warnings related to DNS resolution or network connectivity. You can use the following commands:

sudo journalctl -u NetworkManager
sudo journalctl -u dnsmasq
sudo journalctl -u systemd-resolved

4. Test your connection:
   Once you've reviewed your settings and logs, try checking your internet connection again after a reboot to see if the issue has been resolved.

If you continue to experience issues or need additional assistance, please let me know.

[vale sorrel]

It's not fixed. I can ping 1.1.1.1 quite quickly after a reboot but it still takes a long time after the reboot until DNS queries begin resolving.

[near bridge]

I understand the issue persists. Let's try a few more troubleshooting steps:

1. Remove dnsmasq and use NetworkManager's built-in resolver:

sudo apt-get remove dnsmasq

Then, open /etc/NetworkManager/NetworkManager.conf and ensure that the [main] section doesn't have a dns=dnsmasq line.

Restart NetworkManager:

sudo systemctl restart NetworkManager

2. Configure NetworkManager to use a specific DNS resolver:

Open the NetworkManager GUI, select your connection, click "Edit," and then go to the "IPv4 Settings" tab. Change the "Method" to "Automatic (DHCP) addresses only," and set the "DNS Servers" field to 1.1.1.1, 1.0.0.1 (Cloudflare DNS).

Repeat this process for the "IPv6 Settings" tab, setting the "DNS Servers" field to 2606:4700:4700::1111, 2606:4700:4700::1001 (IPv6 addresses for Cloudflare DNS).

Save the changes and reconnect to the network or reboot the system to check if the issue is resolved.

3. Use systemd-resolved instead of dnsmasq:

Reinstall systemd-resolved if you previously removed it, then enable and start the service:

sudo apt-get install systemd-resolved
sudo systemctl enable systemd-resolved
sudo systemctl start systemd-resolved

Edit /etc/systemd/resolved.conf, ensure the lines below are present or uncommented, and update your preferred DNS servers:

DNS=1.1.1.1 1.0.0.1
FallbackDNS=8.8.8.8 8.8.4.4

Finally, make sure /etc/resolv.conf is a symlink to /run/systemd/resolve/resolv.conf:

sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

Reboot your system and test the DNS resolution.

Please try these potential solutions and let me know if the issue persists or if you require further assistance.

[vale sorrel]

Ok before I do those steps, i'll clarify that I'm on Arch Linux, and that I was using dnsmasq externally from NetworkManager (as in, I wasn't using the dnsmasq plugin in NetworkManager, I had set nameserver to 127.0.0.1 in /etc/resolv.conf and dns=none in the NetworkManager.conf)

[near bridge]

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