English

Network switch — In the first part of this article series, I’ve described how to set up a root server which can serve KVM guests which only have IPv6 connectivity. I use the German hosting provider Hetzner as an example and describe a bridged setup which fits into that provider’s IPv6 infrastructure. After […]

Root server with IPv6-only KVM guests (II): NAT64, DNS64, and KVM

20 Nov, 2018 in English / Linux

Computer network wiring (symbolic picture) — I’ve already written that I’ve rented a root server for myself two years ago. While that machine works and serves things quite reliably, I feel it aging. It’s an Ubuntu 16.04 system, it has only 4 GB of RAM and a quite outdated Athlon64 processor. Due to these parameters, it is […]

Root server with IPv6-only KVM guests (I): The basic setup

11 Nov, 2018 in English / Linux

In (K)Ubuntu 14.04 LTS Trusty Tahr, the Twinkle softphone application is somehow packaged wrongly so that due to missing dependencies, Twinkle cannot start up in graphical mode. Until a corrected package is released, you can resurrect Twinkle by using the version from Ubuntu 12.04 LTS. To do that, perform the […]

How to install the Twinkle soft phone on (K)Ubuntu 14.04 Trusty Tahr

7 Mai, 2014 in English / Linux

I’m just writing some Java code and for the thousand-and-first time there is something like public void someMethod(AnyType a) { if (a instanceof DerivateOfAnyType) { DerivateOfAnyType d=(DerivateOfAnyType)a; d.someMethodOfDerivate(); } } Even though these-days Java has Generics, Annotations and that other cool stuff, you still have need for such casts, and […]

Autocasting in Java – An approach

25 Dez, 2010 in English / Java

Note: This article has been unpublished for quite some time. It’s main parts date back to December 2007. Therefore, if some version number seem to be outdated – I am referring to the state it had back those days. We have a Java application with embedded Jython scripting engine. The […]

Jython memory leak/Out Of Memory problem

11 Jul, 2009 in Computer / English / Java

It seems impossible to operate the Asus M2NPV-MX or M2NPV-VM mainboards with an additional graphics card and use builtin and external card at the same time.