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Showing posts from August, 2022

A Network Access Issue Caused by DNS64

Background While I was troubleshooting a network access issue last night, I found an interesting issue caused by DNS64.  So I spent some time research what's the DNS64 feature is , why it's causing problem to me and how to fix it. The Issue During the troubleshooting, I noticed that some of the network connection between my computer and zhihu-web-analytics.zhihu.com failed.  More specifically, get timed out.  I suspected there might be some heavy packet loss along the network path, so I tried to use mtr to check if that's the case.                                     My traceroute  [v0.95] Bob-Desktop (2600:1700:5050:bcf:22d3:cd56:fda7:fe3a) -> zhihu-web-analyt2022-08-13T16:50:00-0700 Keys:  Help   Display mode   Restart statistics   Order of fields   quit                     ...