[dns-operations] The possible problems after May 5th
matthew at dempsky.org
Thu Apr 8 21:21:28 UTC 2010
On Thu, Apr 8, 2010 at 6:35 AM, bert hubert <bert.hubert at netherlabs.nl> wrote:
> Try it. Block UDP for your resolver and see how far you get.
For fun, I patched dnscache to only send queries over TCP and then
tried resolving a bunch of popular domain names with it. I tested the
first 60 entries in Alexa's top domains and was unable to resolve the
I also tried a bunch of other names that randomly came to mind, and
found these didn't resolve either:
So whatever the state of DNS over TCP support in software may be, the
DNS servers for a large number of popular websites at least don't
currently have it enabled.
More information about the dns-operations