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24年年初的时候，看到搬瓦工补货的消息，马上就入手了一个年付$49.99的SPECIAL 10G KVM PROMO V5 – LOS ANGELES – CN2 GIA LIMITED EDITION，但是在之后的使用过程中，我发现只能使用网页端的ChatGPT，而无法使用iOS端的ChatGPT，前几天偶然看到了NodeSeek上的一篇文章，我对着操作了一下，发现确实可以成功解锁iOS端的ChatGPT，所以记录一下。
操作
所有的操作均在Ubuntu20.04系统下进行，系统不同操作可能也会有些许差异，具体操作流程如下：
-
先查询访问ChatGPT时返回的结果是什么：
resolvectl query chatgpt.com结果可能为：
chatgpt.com: 172.64.155.209 -- link: eth0 104.18.32.47 -- link: eth0 -- Information acquired via protocol DNS in 9.7ms. -- Data is authenticated: no这说明在访问ChatGPT时返回的是ChatGPT的真实IP，而非搬瓦工提供的解锁DNS IP。
-
然后编辑
/etc/systemd/resolved.conf文件，打开文件后其中内容为：# This file is part of systemd. # # systemd is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # # Entries in this file show the compile time defaults. # You can change settings by editing this file. # Defaults can be restored by simply deleting this file. # # See resolved.conf(5) for details [Resolve] #DNS= #FallbackDNS= #Domains= #LLMNR=no #MulticastDNS=no #DNSSEC=no #DNSOverTLS=no #Cache=yes #DNSStubListener=yes #ReadEtcHosts=yes我们需要更改其中的
DNS和FallbackDNS两行，将其修改为：DNS=172.31.255.2 FallbackDNS=8.8.8.8 1.1.1.1保存文件。
-
重启服务：
systemctl restart systemd-resolved -
再次查询访问ChatGPT时返回的结果：
chatgpt.com: 172.31.255.2 -- link: eth0 -- Information acquired via protocol DNS in 2.5ms. -- Data is authenticated: no -
更换成功，可以打开iOS端的ChatGPT尝试是否可以正常访问。
原理
Ubuntu通过读取/etc/resolv.conf中的信息来确定DNS服务器，可以查看一下该文件内容：
# This file is managed by man:systemd-resolved(8). Do not edit.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "resolvectl status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs must not access this file directly, but only through the
# symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,
# replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.
nameserver 127.0.0.53
options edns0可以看到在第一行就有Do not edit.的字样，所以需要通过修改/etc/systemd/resolved.conf文件来达到修改DNS服务器的目的。
