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Hello,
this is my first post - I will try my best to give as precise information as I can.
Problem: Most websites unreachable. telegram-desktop and megasync (AUR) work fine, as do pacman, google.com or the Arch Wiki and Forum (over Firefox).
Current set-up: NetworkManager, firewalld, manually changed DNS to Cloudflare servers (over NetworkManager); recently uninstalled NordVPN (see 'steps')
Set-up at first occurrence of the problem: NetworkManager, nftables, automatic DNS server over DHCP, NordVPN
Steps: I recently set up my first Arch system. Network used to work fine with the configuration provided above. The VPN was only used occasionally. Then I turned on killswitch and autoconnect and the next time I booted my machine the described problem arose. I've had a similar problem on Manjaro in the past and simply reinstalled my system back then, so I decided to search for the problem myself this time. At first I suspected a DNS problem and changed the settings in NetworkManager. When that did not help I tried manually setting /etc/resolv.conf and later experimented with disabling/enabling the firewall (then nftables). I ended up completely resetting iptables, disabling it as well as nftables and in the end stuck with the newly installed firewalld. When I first manually started the iptables service the network worked fine for one session and the problem reoccured after reboot. In the end I remembered the killswitch of NordVPN, disabled it and all was fine. I changed resolv.conf to be automatically configured by NetworkManager.
However, yesterday the problem came back. Killswitch and autoconnect were both disabled. I did set-up CUPS and avahi as described in https://wiki.archlinux.org/index.php/CUPS#Network the day before, connected to the internet over VPN at some point and updated my machine. I tried uninstalling NordVPN, reinstalling NordVPN and reinstalling NordVPN with wireguard as suggested in another post and rebooting the machine. It did not help.
At multiple points during my 'adventure' I tested the connection with connman and the problem was the same as with NetworkManager.
Thank you in advance for your suggestions.
Update: connecting over LAN and deleting and re-adding the wifi connection solved the problem. I changed the DNS settings to match those of before and compared the connection settings of my wifi to the settings before the re-adding. They are identical.
Last edited by icebear404 (2020-01-02 21:39:32)
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which technology are you using? openvpn or nordlynx (wireguard) or both?
In my experience I let networkmanager do its job and establish a connection to the router. So i would see a 192.168.1.1 in my /etc/resolv.conf
I also let nord determine the tunnel. For me it shows up in "resolvectl status" as 103.86.99.99 and 103.86.96.96 respectively. (depends on your network setup)
Alternately in "ip a" as the tun
if your using nordlynx (wireguard) you can check # wg and it will show the tunnel parameters
also with wireguard ensure you have "wireguard-arch" for the linux kernel or "wireguard-lts" installed for the lts kernel or both if you use both.
sometimes on start up the tunnels wont establish correctly so i just reconnect. and check.
also if it solved you can put [solved] in the title of your first post
Last edited by SurlyCycler (2020-01-17 19:50:09)
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