I’m currently working on a web application and I set up a development version of this application on my local box. For my convenience I set up a number of unit tests to ensure that I do not accidentally break stuff when implementing new features. A number of unit tests that involved DNS failed repeatedly with a time-out. For various different reasons I’m using a router provided by my telco. During my investigation of the matter, I found out that the internal DNS server of the router did only answer requests for A records. Requests for any other record types timed out. I wonder why they do this. The only reason I can think of is that it’s part of my ISPs fight against malware installed on their customers Windows boxes, so this is not exactly evil. On the other hand, it is not very nice of them, because I’m sure that it cost me a few hours to debug problems that resulted out of this. I think that I’ll call them and at least tell them that there are customers out there who really need the real, full, unfiltered DNS service to get their work done.
Tags: botnet, dns, life, web development
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