Why I don’t like projects written in ruby

From the manual:


curl http://........ | sudo bash

Sure. People doing that without checking also click on attachment ending with .exe under windows.

But wait. I’m not finished. I downloaded the shell script, checked it was harmless. Just adding something to /etc/apt/apt.conf.d and running apt-get update. Well actually apt-get update &> /dev/null. Without checking the return value. Which is bad when it fails.

No IPv6 is better than broken IPv6

Some time ago I read  this mail.

First things first: You can run but you can not hide. IPv6 is here. You’ll have to work with it sooner or later. (alt least if you still want to work in IT in the next couple of years). About 20% of all users from Germany access Google via IPV6..

But: If you don’t take it seriously don’t do it. Implementing dual-stacked services is more work.

Some advice:

1. Monitor your dual-stacked service and take care if something breaks.

2. Use IPv6 on your work computer. It’s a good way too learn, maybe the only way to notice if something is broken and enables you to troubleshoot problems

3.  Spread the knowledge. If you are the only person who knows and cares about IPv6 you have a problem.

IPv6 and OpenSource Projects

After reading about this mail on a mailing list I decided too see if you could build something small like Linux from Scratch (LfS) in an IPv6 only environment. The answer is: No.

LfS provides a list of files you’ll have to download to make the project work. Using some shell commands I came up whit a list of 25 different host. Two of them where ftp and only ftp.vim.org has a AAAA-record, ftp.astron.com has not.

Out of the remaining 23 only these 7 answered to HTTP requests via IPv6:

alpha.gnu.org HTTP OK: HTTP/1.1 200 OK
dev.gentoo.org HTTP OK: HTTP/1.1 302 Found
ftp.gnu.org HTTP OK: HTTP/1.1 200 OK
www.bzip.org HTTP OK: HTTP/1.1 200 OK
www.cpan.org HTTP OK: HTTP/1.1 200 OK
www.iana.org HTTP OK: HTTP/1.1 200 OK
www.kernel.org HTTP OK: HTTP/1.1 301 Moved Permanently

And here are the remaining 15:

anduin.linuxfromscratch.org Name or service not known
cpan.metacpan.org Name or service not known
download.savannah.gnu.org Name or service not known
downloads.sourceforge.net Name or service not known
launchpad.net Name or service not known
pkgconfig.freedesktop.org Name or service not known
pkg-shadow.alioth.debian.org Name or service not known
prdownloads.sourceforge.net Name or service not known
sourceforge.net Name or service not known
tukaani.org Name or service not known
www.greenwoodsoftware.com Name or service not known
www.infodrom.org Name or service not known
www.mpfr.org Name or service not known
www.multiprecision.org Name or service not known
www.zlib.net Name or service not known