Annoying Internet access problems in Linux

The annoying Internet access problem in Linux-general Linux technology-Linux technology and application information. For more information, see the following. A few days ago, a dormitory roommate's Ubuntu8.04 had a problem accessing the Internet. He could only open a very small number of webpages, and baidu Google and other websites could not be opened. I was puzzled.

On Ubuntu, the same situation occurs, and the same configuration on windows is normal.

I started to think that the system was faulty. I replaced Ubuntu with a red hat el5. Google, the same is true on the Internet. If you can ping the host, the webpage cannot be opened.

After communicating with many netizens, I tried countless methods and ruled out all related factors such as setting the firewall selinux in dns.

Ten days ago it was quite normal. I recalled it carefully and finally remembered the software upgrade we had made for our broadband route. Is that why?

After the software of the router is downgraded to the previous version, everything is normal.

It seems that the new version of the Broadband Router is not compatible with linux. If you encounter this situation, try it.