New knowledge! The virtual machine network card causes your DNS resolution to slow down

Preface

about DNS The problem of resolution , In fact, it may be a cliche for those who can query online , Most of the time , We will all come to a conclusion , That is to modify Of the local network card DNS Address , however , The author encountered different situations , Finally, I found the answer , Write it down here , I hope it can help readers in the same situation .

Source of problem

Actually , The author's computer DNS Parsing has been slow for some time , Often, it takes an abnormally long time to open the web page parsing host . And tested , Such as QQ、 WeChat There is no problem waiting for the software to be directly connected , Before , I always thought it was the problem of routers or other network devices , And because it can barely bear the past , The author doesn't care too much .

But one night , When the author opens Spring Boot Check the document on the official website , Many links in it jump to different websites , Click on different links many times , Look at the small circles turning on the browser , The author fell into meditation .

So I think about it , Swear to solve this problem .

Try solutions

But how can things be so simple , Due to previous wrong judgment , The first thing I suspect is the router or network device .

error

therefore , The author enters the background of the router , Will router's DNS Set as custom public DNS, However , Failure as usual , To identify non router problems , I also use different computers to test under the same router , It is found that the author's computer is a special case ….

One law doesn't work , Another way . Make sure that the network device problem is excluded , The author began to look for solutions on the local computer .

First , The author is like most cases , Customize in network settings DNS For general purpose 114.114.114.114.

Unfortunately , The problem is not solved . Someone may ask , It must be yours DNS The address doesn't work . The fact is that , The author has tried almost all the ones that can be ranked on the number DNS Address , Failure as usual .

here , The author has begun to think about whether to reinstall the computer system , But I think of the complex software installation and configuration after reinstalling the system , The author decided to continue to study several times .

Awaken

thus , The author re clarifies his thinking , Guess if it is DNS Whether the address is not set , Input at the console ipconfig /all, Find out DNS It is set successfully .

Is it really a system problem ？ Now that we have arrived at the console , Just test DNS Analyze it ：

Um. ？ The server should not be 114.114.114.114 Do you ？ Is it really not effective ？ System BUG？, With skeptical thoughts , I open the network adapter to confirm DNS Address ：

Obviously , No problem , Just when the author is considering reinstalling the system , I see two adapters Vmware Virtual machine network adapter ：

Because these two adapters were installed very early Vmware The virtual machine comes with , I forgot what it was for , So by the way, I went in and looked at the network information ：

Um. ？ Why do you look so familiar ？ Go back to the console , I found that this is not the same as the console DNS Do you ？ Is it you bastard ？ So I tried to disable the two adapters , Test again on the console ：

good heavens , I'm a good guy , It turned out to be the conflict of multiple network cards , This is the first time I have met , I can only blame myself for not being good at learning .

Reopen the browser , ah ~, This refreshing feeling （ Will ）