Over the whole weekend is gone TuxCon 2017. According to most people I did decently well with my lecture. I personally am not quite satisfied, certainly there are many things on which to work, because I plan to not be my last such appearance in the future. To be honest most of the presentation almost not remember it, It was like in a trance. I remember the sparse moments in which I look at the clock and realize, that's a decent amount of elapsed time.

It definitely wasn't easy, even taking into account the, the audience was extremely closely targeted and there was a big barrier with the audience.

 

DN42 is a wonderful project that enables you to develop your skills without scraping the BGP product environment, without you having to have expensive devices with which to make your lab to do simulations with GNS3. At the same time is not a pure laboratory environment where there is no real world problems. Participate with 1 node in the project for about a year. One of the problems in the project is 1:1 with the real world – When someone announced prefixes that do not need to declare. Because I'm lazy and don't feel like typing on hand time filters, I thought the problem with a simple bash script that generates a prefix-list with name dn42 and pour the valid prefixes.

#!/bin/bash</pre>
vtysh -c 'conf t' -c "no ip prefix-list dn42"; #drop old prefix list

while read pl
do
vtysh -c 'conf t' -c "$pl"; #insert prefix list row by row
done < <(curl -s https://ca.dn42.us/reg/filter.txt | grep -e ^[0-9] | awk '{ print "ip prefix-list dn42 seq " $1 " " $2 " " $3 " ge " $4 " le " $5}' | sed "s_/\([0-9]\+\) ge \1_/\1_g;s_/\([0-9]\+\) le \1_/\1_g");
vtysh -c 'wr' #write new prefix list

The list of valid prediksi into https://ca.dn42.us/reg/filter.txt from the main conveyor + little mods on my part to be able to generate a prefix list. The commands are executed in vtysh.

For the 4th consecutive year, will take place the Conference on free software and hardware TuxCon. Personally for me it is the most strong Plovdiv Conference which is held, Since it is targeted for developers only, and the target group is much bigger and the audience is very colorful. If memory serves me correctly I don't think, I missed Edition so far. This year's Edition is more special to me, Since I have a presentation. I'm going to talk about dnsdist and as to whether it is useful for your infrastructure. The theme of which will speak it chose Sam. I felt the need to show it to the world, as it is a relatively young, and so far I've barely found something in it that I don't like. I don't remember when was the last time he impressed me so much something new and at the same time works extremely well.