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chizou
Asked: 2019-02-09 09:28:01 +0800 CST

How do I list DNS server order in systemd-resolve?

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I know that systemd-resolve --status lists all my connections and their DNS servers and nmcli connection show <connection> | grep -i dns will list the priority of the DNS connections. But is there a single command I can run that will list all DNS servers and their priority/order?

dns systemd-resolved

2 Answers

  1. Best Answer

    It is stupid, but you can't!

    systemd-resolved follows internal rules to choose the "correct" DNS. This might be different for each query. It uses things like if a server worked or failed in the past, interface order and even what domains allocated to each interface. It's difficult to manage with some VPN setups.

    The best you can do is check the /run/systemd/resolve/resolv.conf file. That is the resolv.conf file generated by systemd-resolved.

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  2. It is possible to make a dns priority with

    nmcli -p connection modify MY_VPN_CONNECTION ipv4.dns-priority -42

    as taken from https://github.com/systemd/systemd/issues/6076

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