禁用 Ubuntu 使用 systemd-resolved 进行 DNS 解析，保留53端口

本文档介绍 禁用 Ubuntu 使用 systemd-resolved 进行 DNS 解析，保留53端口 的相关内容。

禁用系统服务

mkdir -p /etc/systemd/resolved.conf.d/ cat >/etc/systemd/resolved.conf.d/98-disable-127-53.conf << EOF [Resolve] DNSStubListener=no EOF systemctl daemon-reload && systemctl restart systemd-resolved.service && systemctl status -l systemd-resolved.service --no-pager

指定dns

mkdir -p /etc/systemd/resolved.conf.d/ cat >/etc/systemd/resolved.conf.d/99-dns.conf << EOF [Resolve] DNS=1.2.3.4 1.2.3.4 DNSStubListener=no EOF ln -s -f /run/systemd/resolve/resolv.conf /etc/resolv.conf systemctl daemon-reload && systemctl restart systemd-resolved.service && systemctl status -l systemd-resolved.service --no-pager cat /etc/resolv.conf