sing-box/release/config/sing-box-split-dns.xml

<!DOCTYPE busconfig PUBLIC
        "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
        "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
    <policy user="root">
        <allow own="org.freedesktop.resolve1"/>
        <allow send_destination="org.freedesktop.resolve1"/>
        <allow receive_sender="org.freedesktop.resolve1"/>
    </policy>
    <policy user="sing-box">
        <allow own="org.freedesktop.resolve1"/>
        <allow send_destination="org.freedesktop.resolve1"/>
        <allow receive_sender="org.freedesktop.resolve1"/>
    </policy>
</busconfig>