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by f4c39012 1090 days ago
I've debugged connection issues with someone in China. The same person, using the same browser and at the same time, showed up in the logs of two cloud apps with different IP addresses. The applications were adjacent in the cloud, same network config and everything. We figured there was always redirection, and we were never seeing their "true" IP address.

A simpler test is to search "what is my IP" and compare the values returned by different services.
1 comments
aeyes 1090 days ago
The IP space in China is wild, multiple ISPs use the same IP ranges and some even use foreign IP space but they don't route them outside of China. I wouldn't be at all surprised seeing proxy setups at ISPs trying to "fix" some of this.

Even when we had physical machines in Chinese data centers it didn't mean that our service was reachable from all ISPs. In 2010 we gave up on that and just started using Akamai China CDN with our servers in Europe.

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