配置adguard home

sudo lsof -i :53

COMMAND      PID            USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
dnsmasq     1664     lxc-dnsmasq    6u  IPv4   16640      0t0  UDP DESKTOP-:domain 
dnsmasq     1664     lxc-dnsmasq    7u  IPv4   16641      0t0  TCP DESKTOP-:domain (LISTEN)
dnsmasq     1803 libvirt-dnsmasq    5u  IPv4   19554      0t0  UDP DESKTOP-:domain 
dnsmasq     1803 libvirt-dnsmasq    6u  IPv4   19555      0t0  TCP DESKTOP-:domain (LISTEN)
systemd-r 193652 systemd-resolve   14u  IPv4 1071243      0t0  UDP _localdnsstub:domain 
systemd-r 193652 systemd-resolve   15u  IPv4 1071244      0t0  TCP _localdnsstub:domain (LISTEN)
systemd-r 193652 systemd-resolve   16u  IPv4 1071245      0t0  UDP _localdnsproxy:domain 
systemd-r 193652 systemd-resolve   17u  IPv4 1071246      0t0  TCP _localdnsproxy:domain (LISTEN)

建议优先用systemd-resolve，支持DoH、DoT。而dnsmasq也不能完全卸载，因为libvirtd的虚拟网络模块仍然依赖它。

临时的先停用吧，以便adguard能继续配置

sudo systemctl stop libvirtd libvirtd-ro libvirtd-admin lxc-net systemd-resolved.service

在resolve配置中，停用DNSStub

libvirt虚拟机

<network>
  <name>default</name>
  <forward mode='nat'>
    <nat>
      <port start='1024' end='65535'/>
    </nat>
  </forward>
  <bridge name='virbr0' stp='on' delay='0'/>
  <dns>
    <forwarder addr='127.0.0.53'/>
  </dns>
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.254'/>
    </dhcp>
  </ip>
</network>