127.0.0.1 重定向到 example.com。
肯定是我自己做错了什么，而且我已经 4 天没找到错误了。很抱歉。也许这个错误非常明显，因为我是初学者。如果您能帮我找到它，我将不胜感激。
running services:
[ + ] acpid
[ - ] alsa-utils
[ - ] anacron
[ + ] apparmor
[ + ] apport
[ + ] avahi-daemon
[ - ] bluetooth
[ - ] console-setup.sh
[ + ] cron
[ + ] cups
[ + ] cups-browsed
[ + ] dbus
[ - ] dns-clean
[ + ] gdm3
[ + ] grub-common
[ - ] hwclock.sh
[ + ] irqbalance
[ + ] kerneloops
[ - ] keyboard-setup.sh
[ + ] kmod
[ + ] network-manager
[ + ] networking
[ + ] nginx
[ - ] nginx-debug
[ - ] plymouth
[ - ] plymouth-log
[ + ] postgresql
[ - ] pppd-dns
[ + ] procps
[ - ] rsync
[ + ] rsyslog
[ - ] saned
[ + ] speech-dispatcher
[ - ] spice-vdagent
[ + ] sysstat
[ + ] udev
[ + ] ufw
[ + ] unattended-upgrades
[ - ] unicorn
[ - ] uuidd
[ + ] whoopsie
[ - ] x11-common
和：
LISTEN 0 10 0.0.0.0:3689 0.0.0.0:* users:(("rhythmbox",pid=2650,fd=19))
LISTEN 0 128 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=4017,fd=13))
LISTEN 0 5 127.0.0.1:631 0.0.0.0:* users:(("cupsd",pid=639,fd=7))
LISTEN 0 128 127.0.0.1:5432 0.0.0.0:* users:(("postgres",pid=850,fd=7))
LISTEN 0 10 [::]:3689 [::]:* users:(("rhythmbox",pid=2650,fd=20))
LISTEN 0 5 [::1]:631 [::]:* users:(("cupsd",pid=639,fd=6))
这就是我目前所做的：
sudo /etc/init.d/networking force-reload
sudo /etc/init.d/dns-clean restart