Beta

×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

McCain Backs Nuclear Power

keithmoore Re:no American power plants burn Oil (1563 comments)

more to the point, how does building nuke plants translate into less dependence on oil?

it's not that it can't happen, but it will require a lot more than just building lots of nuke plants. e.g. we'll need electric cars that can be recharged, or we'll need to use a lot of that electricity to produce hydrogen for hydrogen cars.

more than 6 years ago

Submissions

top

keithmoore keithmoore writes  |  more than 7 years ago

keithmoore writes "For the past few days, Earthlink has been returning bogus answers to DNS queries for "A" records for nonexistent domains. When asked for IPv4 addresses of a domain that doesn't exist, their DNS servers return addresses of a host that will respond to HTTP requests to port 80. Their web server will then do a search for similar domains as well as display some advertisements. This is very similar to the VeriSign SiteFinder disaster from a few years ago.

Of course, this breaks applications right and left. Any application that distinguishes between "no such domain" and "server not responding" or "connection refused" errors will do the wrong thing if it queries one of Earthlink's servers. They're very different kinds of errors — "no such domain" is a user error or application configuration error while "not responding" or "connection refused" is usually a temporary problem with a server or the network. Many applications will report the first condition as an error immediately while treating the latter as a temporary error and retry the connection, or try to connect to a different server before giving up.

But it's even worse than that — if the host you are trying to reach has only IPv6 addresses and your application queries for IPv4 addresses first, it will get the bogus IPv4 addresses of completely different hosts than the one you are trying to reach, and might never even see the IPv6 addresses that are assigned to the host.

for other discussion on this, see http://www.gossamer-threads.com/lists/nanog/users/ 92715 and
http://www.dslreports.com/shownews/77566 .
 "

Journals

keithmoore has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?
or Connect with...

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>