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Technicolor TG582n IPv6 for Forthnet

So, after a long time of zero blog posting activity I thought it would be nice to share my ADSL modem/router configuration for IPv6 connectivity with my current ISP, Forthnet.

The ADSL router I use is a Forthnet provided Technicolor TG582n. TG582n’s firmware revision is at 10.2.2.B.EH. I am already aware of my provider’s IPv6 settings so that really helped me a lot with the evaluation of my setup. For more information regarding Forthnet’s IPv6 setup status and/or settings you can refer to it’s official website. According to the site, Forthnet has currently configured almost all of its ADSL BRAS Routers so you don’t have to alter your PPP username to have IPv6 up and working.

Mozilla Firefox OS App Days in Greece

As scheduled by Mozilla, on 26/01/2012 Firefox OS was showcased worldwide receiving quite possitive feedback. Athens, Greece was one of the cities to be in the list so an all day event took place under the supervision and great care of people involved directly or indirectly with the project itself. With help from @ppapadeas, @comzeradd, @bacharakis and many other members of Mozilla’s Greek Community (@MozillaGreece) as well as Greek FOSS supporters, we experienced the new mobile operating system in full action!

UDP / TCP Checksum errors from tcpdump & NIC Hardware Offloading

If you’ve ever tried to trace a UDP or TCP stream by using the tcpdump tool on Linux then you may have noticed that all, or at least most, packets indicate checksum errors. This is caused because you have checksum offloading on your network card (NIC) and tcpdump reads IP packets from the Linux kernel right before the actual checksum takes place in the NIC’s chipset. That’s why you only see errors in tcpdump and your network traffic works ok.

Ubuntu Precise 12.04: Get rid of NM's dnsmasq and setup your own!

Anyone from an older version with a working dnsmasq setup must have noticed that after a dist-upgrade to Ubuntu Precise 12.04 dnsmasq is having trouble on startup. The reason is simple. On the upcoming 12.04 Desktop release, Network Manager is starting its own dnsmasq instance which is binded on the localhost ip (127.0.0.1) and is responsible for making sure all LAN, WAN or even VPN connections have a proper DNS handling from a routing prespective. No caching at all! For more info on that change read this blog post.