DNS protocol-related command dig

DNS queries can be done by two protocols TCP UDP, DNS tested by the dig command parsing

• udp way, the first response packet is treated as valid data
• tcp way, sometimes effective, it may be rest
• Data will be modified in two ways, because we are in the LAN

Use dig resolve domain names

dig accounts.google.co.jp @1.1.1.1 +short
74.86.118.24

This shows that the results are wrong, add +tcpparameters to try again

kasumi@kasumi:~$ dig accounts.google.co.jp @1.1.1.1 +short +tcp
accounts-cctld.l.google.com.
172.217.164.99

Now the results of analytical and abroad, as barely a

d@MyServer: ~ $ dig @1.1.1.1 accounts.google.co.jp +short
accounts-cctld.l.google.com.
172.217.164.99

d@MyServer: ~ $ curl cip.cc/216.58.194.195
IP      : 216.58.194.195
地址    : GOOGLE.COM  GOOGLE.COM

数据二  : 美国 | 加利福尼亚州圣克拉拉县山景市谷歌公司

数据三  : 美国加利福尼亚旧金山 | 谷歌

URL     : http://www.cip.cc/216.58.194.195

How to solve the DNS Pollution problem?

---

END