Torbjörn Eklöv

Torbjörn Eklöv

Senior Network Architect, DNSSEC/IPv6
Joined on January 28, 2010
Total Post Views: 265,369


Torbjörn Eklöv was co founder and co owner of Interlan AB, an IT consulting company in Sweden with +40 employees. Interlan is since 2022 sold to He is a DNSSEC and IPv6 pioneer.
All internal and external services at former Interlan AB uses both IPv6 and IPv4. Torbjörn has worked with Internet communication and IT-security for 30 years.
His favorite homepage is
And since 2011-11-22 he is a proud winner of Swedish Network Users’ Society’s IP-pris

Except where otherwise noted, all postings by Torbjörn Eklöv on CircleID are licensed under a Creative Commons License.

Featured Blogs

Do We Need IPv4 at Home/SOHO Any More?

CLAT/NAT64 is utilized across many mobile networks globally, and I am only talking about Ethernet and Wi-Fi in home and small office/home office (SOHO) environments. I experimented by completely disabling IPv4 at home and established a SSID where my MacBook Pro operates without an actual IPv4 address. The MacBook supports CLAT (RFC 6877), and by implementing PREF64 (RFC 8781) and DHCP Option 108 (RFC 8925) in my network, I was able to achieve a 100% IPv6 environment. more

The Christmas Goat and IPv6 (Year 14)

A new year and a new goat with new conditions, the goat was slowly eaten by jackdaws, and in the end, almost only the frame remained. This was really slow TV for the devastation… You can read more on Wikipedia about the devastating jackdaws and the straw... 36% IPv6 is equal to last year, and I had high hopes as Telia (AS3301) has made great progress in IPv6 and that Sweden should be the dominant country.  more

The Christmas Goat and IPv6 (Year 13)

2022 was not a normal year for me. We sold our company of almost 25 years to Interlan Gefle AB to Nordlo Group, and I also moved away from Gävle city to Boänge, a small rural village outside Sandviken where my ISP (AS20626) still isn't ready for IPv6 in my location.... ☹ ( I use a Mikrotik with a Wireguard tunnel to solve my IPv6 today.) It's 2023 when I'm writing this, and I can't understand why ISPs still haven't deployed IPv6! more

The Christmas Goat and IPv6 (Year 12)

This year could be the fifth year in a row where the goat isn't burned down. But early in the morning of Dec 17th, it was on fire by an arsonist who got caught a few minutes later. So Stephan Lagerholm, who had visited me earlier for some IPv6 site seeing in Gävle and I were lucky to get this photo. The traffic went down by 5% from last year, and I don't have any good explanation for that. The visitors with many hits in the logs are always from the same countries where North America and Europe are dominating. more

The Christmas Goat and IPv6 (Year 11)

This is the fourth year now with almost no snow during the Christmas Goat event here in Sweden, and so once again, you get a photo without any snow. Because of Covid-19 and 99.99% people working for home, I have not even seen the Goat live this year... What a crazy year it has been! more

The Christmas Goat and IPv6 (Year 10)

This year marked the 10th anniversary of collecting statistics for IPv6 from the Christmas Goat. It's the third year now with almost no snow, and with this crazy winters and climate, it's hard to get any good photos of the goat. The photo is only from 3–4 days in early December with little snow so far in Gävle.The measurements this year started very low with 20% IPv6, but it made some improvements and landed just like 2018 at a total of 41%. more

The Christmas Goat and IPv6 (Year 9)

Here we are with the ninth year of measuring IPv6 on the Christmas Goat. Last year we had almost no snow and it's almost the same this year. This year I give you 50 seconds of "action" film with the goat from the early in December. But the measurement was a big disappointment. They started high with 60% IPv6 and went down to 41% at the end. But as can be seen with the progress, next year we should easily break the 50% barrier! more

The Christmas Goat and IPv6 (Year 8)

This is the eighth year we measure IPv6 on the Christmas Goat. And with the crazy climate we have to live in now where there is no snow on the goat or ground. But IPv6 is doing better than the climate this year. This year we increased from 27% 2016 to 40% 2017. In Sweden Tele2, Tre and Comhem are still the only major ISPs with IPv6 enabled. Tele2 (with IPv6 since ~three years) and Tre is mostly mobile operators, and Comhem has enabled IPv6 in their Docsis network. more

The Christmas Goat and IPv6 (Year 7)

It was a great year for the goat! 2016 marked the 50th anniversary for the Christmas Goat and there was a grand opening ceremony along with music and fireworks. But only a few hours after the opening, a pyromaniac set the goat on fire. The only track the police have is a cap above that they hope to find DNA in and a crappy picture of the pyromaniac's back. more

The Christmas Goat and IPv6 (Year 6)

When I last year failed to take a picture of the Christmas goat before it was taken down, I decided this year to take a pic every minute, just to be on the safe side. A shortened movie based on these pics of the 2015 Christmas Goat can be find on YouTube. The clip on YouTube also shows that in the early morning of December the 27th the goat was set on fire and burned down in minutes. more

The Christmas Goat and IPv6 (Year 5)

This year I didn't even get a good picture of our famous Christmas goat here in the city of Gavle Sweden. The Christmas goat this year survived Christmas but were suddenly on the 28th of December dismounted. The reason for the poor goat's early leave from its own little park downtown Gavle is that it is now the year of the goat in China, and the city of Gavle has a sister-town in China -- Zhuhai. more

The Christmas Goat and IPv6 (Year 4)

This year, 2013, I got 24 days of IPv6 and DNSSEC measurements. All in all it created 15GB logs with more than 62 million rows. On the 21st of December, early in the morning, the goat was "traditionally" burnt down, however this year with one exception. Via the Swedish newspaper Expressen the arsonists anonymously took the blame and also filmed their own act. more

The Christmas Goat and IPv6 (Year 3)

As Christmas were getting closer, the third time of load balancing the streaming pictures of the famous Christmas goat in the city of Gävle, Sweden, was on the agenda. My goal with this activity is the same as before, to track the use of IPv6 and DNSSEC validation. The results from the last two years are published on CircleID. more

The Mailbox That Saved DNSSEC

A very long time ago, back in the ancient time of year 2006, the registry for .se domains, also called .SE, opened up for signing .se zones with DNSSEC. In those days .SE did not have a registrar/registry model and my own company Interlan was then an agent for .SE. One day I suddenly got a mail from .SE regarding secure DNS -- DNSSEC. ...I almost immediately saw the benefits that such a solution could give to a better and more secure Internet. more

IPv6: Childhood’s End?

A few weeks ago, when I was lurking around IPv6, I found that my own was my first ever IPv6 domain. A "whois" on the domain says that it was registered in 2005, but something told me that I actually started this earlier. ?I therefore logged in at and could see that my first feeling was correct; the first invoice for was actually paid in the year of 2002. Here are some of the key things that I have experienced and learned over my first ten years. more

The Christmas Goat and IPv6 (Year 2)

Last year the municipality of Gavle asked my company if we could help them load share the streaming pictures of the famous Christmas goat in Gävle. I accepted the invitation and set up a separate domain. My own interest in this was of course to track the usage of IPv6 and validation of DNSSEC from the visitors of the site. more

Microsoft Direct Access: Is it Heaven or Hell for IPv6?

I must confess, during the past couple of years I have highlighted the VPN-solution Direct Access (DA) from Microsoft as a killer application for IPv6. I still have hope for this solution, but as I now have had the chance to study the UAG/DA-solution more closely and in practical implementation, I must also highlight some issues for Microsoft to handle. My conclusion is that using DA today brings difficulties when it comes to an organization that already has, or wants to, deploy native IPv6 internally. more

The Christmas Goat and IPv6 (Year 1)

The city of Gävle in Sweden have a special Christmas tradition for which it is quite famous. Every year in December a giant Christmas Goat in straw is put in to place in one of the central town squares. In relation to this tradition a sub-tradition has emerged which the city is even more renowned for -- to burn down the poor Christmas Goat. This is of course an "illegal" act, but still of quite some interest! Web-cameras showing the status of the Christmas Goat have been put up by the city of Gävle, primarily in a purpose of control. However, when someone sets fire to the poor Goat, the traffic and need for bandwidth tend to go sky-high for these cams. more

IPv6: Whose Responsibility Is It?

This text was originally meant to be read by the Swedish authorities and municipalities, but the problem is most probably similar all over the world. Along with others, I have repeatedly written and spoken about the need for municipalities and agencies to start with the roll-out of IPv6. Most of what I have written has been focused on IT managers. It might seem natural that it is the IT manager's decision to get the IPv6-project started. But what if perhaps it isn't...? more

IPv6 and the Swedish Public Sector

No one can have failed to notice that the last IPv4 address will soon be allocated. We have lived with a shortage of addresses for 15 years, but when the last address is allocated, the shortage will become acute, instead of just a pain, as it is today... In The Hitchhiker's Guide to the Galaxy, Douglas Adams describes the least expensive and most effective method for making something invisible. You simply decide that it is Someone Else's Problem or SEP, if you abbreviate. This is an approach that is frighteningly similar to the Swedish public sector's view of the address shortage on the Internet. "It is not our problem -- if we ignore it, it will probably go away." more

DNSSEC: Will Microsoft Have Enough Time?

I have previously pointed out the shortcomings of good and user friendly support for DNSSEC in Microsoft's Server 2008 R2. During the period just after I wrote the post, I had a dialogue with Microsoft, but during the last months there has been no word at all. The reason I bring this up again is that more and more Top Level Domains (TLDs) now enable DNSSEC and also the fact that within six months the root will be signed. more

Topic Interests

DNSDNS SecurityCybersecurityIPv6 TransitionInternet GovernanceEmailPolicy & Regulation IPv4 MarketsNetworksBroadbandAccess ProvidersCoronavirus

Recent Comments

The Christmas Goat and IPv6 (Year 7)
The Christmas Goat and IPv6 (Year 6)
The Christmas Goat and IPv6 (Year 2)
IPv6: Whose Responsibility Is It?
IPv6: Whose Responsibility Is It?

Popular Posts

Microsoft Direct Access: Is it Heaven or Hell for IPv6?

DNSSEC: Will Microsoft Have Enough Time?

The Christmas Goat and IPv6 (Year 2)

IPv6: Whose Responsibility Is It?

The Christmas Goat and IPv6 (Year 1)