Consider a network device. A firewall to be more precise. You have the ability to do a traceroute to IPv4 enabled hosts. You can not do a traceroute to dual-stacked or IPv6 only hosts, neither using an IPv6 address nor using a DNS name.
The vendor claims it is a missing feature. I think it is a bug. What do you think?
Some time ago i wrote that you can’t configure IPv6 in certain IOS versions.
I now have a solution, at least for my home network: I replaced the Cisco 871 router with a Fritzbox 7390.
So far everything is working, including IPv6 (using a Sixxs-Tunnel). Note that you need either a static IP or a tunnel using heartbeat.
I bought mine at amazon.de.
I’m not only blogging a lot about IPv6, I’m also conducting IPv6 trainings. Topics might range form basics to some more specialized topics including Linux, Cisco IOS (and PixOS but there is not much to talk about), JunOS and migration planing.
Next public trainings are available in Berlin in cooperation with Heinlein Support from March 14th. to 16th and in Munich in cooperation with the Open Source School form April 11th-13th. These trainings are conducted in German.
For individual trainings in German or English just drop me a mail: firstname.lastname@example.org
(Thanks to everybody who pointed me to this. I’m a little behind reading my RSS-Feed).
Unless it’s really urgent or we arranged it via mail.
I do quite a lot of trainings and talks and there is nothing more annoying than unexpected phone calls with no important reason (I don’t consider “Do you have a better photograph?” for a conference starting in 5 month or “Just one question: Are you a vegetarian?” for a conference starting in about a month important questions.)
This is especially true for companies who expect me to conduct trainings or presentations for them.
I usually read my mail and answer within 24h hours.
Even more annoying are people who call you with “I just send you a mail about a very exiting project. Can we talk about it?” before even hitting “Send” in their mail client. Or people calling you over and over and over again if you don’t answer the phone.