Jens’ BLOG

May 22,1973 was the day the Ethernet concept was first outlined in a memo from the young Bob Metcalfe at PARC [...]

Source

Always run named-checkconf -z after making changes to your Bind configuration. And of course you should read the output and fix errors.

For lazy people like me make is pretty useful:


root@dns:/etc/bind# cat Makefile
all:
named-checkconf -z
rndc reload


Just type make and your configuration gets checked and if everything is in order Bind is reloaded.

Last week I gave a one day IPv6 introduction at a customer.

They are afraid of two things:

• Implementing IPv6 in there complex network which has grown over the years
• Not implementing IPv6

(Okay, okay, it’s old.)

http://www.vyncke.org/ipv6status/ just came up at #denog over on IRCNET.

Some thoughts:

1. It feels good when a project you where involved in is relatively high in the list for Germany and all services (Web/ Mail / DNS) are green.
2. Many people will need consulting and training in the near future.
3. Whats so hard about IPv6 and DNS?

I’m afraid to ask a question because I can guess the answer.

The answer will be: “Because ICMP is evil!”

I have written a small article on IPv6 (in German) for the Uptimes (members’ magazine of the GUUG).

At the end of February 2013 (20th-23rd) I’ll be giving an IPv6 training at the Open Source School in Munich. (Language will be German).

I recently needed to reset a password on an older Cisco Router where the config register was set to 0×1.

According to Cisco documentation 0×1 means “Automatic boot up from ROM (IOS sw subset)”. It was not possible to interrupt the boot process to enter rommon mode. The solution is quite easy: Just send the break when the IOS is already booted. After that you can enter rommon, change the config register to 0×2142, reset the device and recover the password as usual.

According to this article (German) Hetzner a German ISP well know for selling dedicated servers is planing to charge more for IPv4.
The article states that they plan to charge between 2 and 5 Euro per IPv4 address.

Still thinking that there is time starting to implement IPv6?