Long story short, I was suddenly locked out from certain websites due to OpenDNS filters that some other customer of the same DSL service had set up. This customer may have been unaware that IP addresses on this service are forcibly changed every 36 hours, and did not take the necessary steps to keep their OpenDNS account up-to-date. When I received the same IP from the dynamic address pool, I also inherited the blocks. Eventually my only way out was either removing the OpenDNS servers from my config, or waiting 36 hours, or resetting the modem to get a new IP. This again makes me wonder why ISPs still enforce this idiotic IP change on customers. It is ineffective in preventing people from running servers, because that can be mitigated mostly through a dynamic DNS. I guess this is simply another case of artificially degrading a product in order to be able to sell a ‘premium’ product with a static IP, at a higher price.
Here's the entire detective story for the interested. On a certain day, I suddenly saw the following when I tried to visit the Radio Paradise site:
The OpenDNS servers 22.214.171.124 and 126.96.36.199 have been in my system settings for many years, and never had I seen this kind of block. Actually I had specifically switched to those servers to circumvent some idiotic blocks that were implemented in my ISP's DNS servers.
Radio Paradise being blocked made no sense at all. At first sight, there were only two plausible explanations:
- Somehow I was now being defaulted to one of the OpenDNS flavours that filter potentially offensive content.
- Some law prohibits listening to USA radio streams from within Belgium, and OpenDNS enforced this.