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MyTake - Native IPv6 DNS Still Not a Reality


Native IPv6 DNS Still Not a Reality 
Friday, February 29, 2008, 12:31 PM - Computing Technology
Posted by Administrator
Recently IPv6 addresses were added to some of the DNS root servers. Many have tauted this as one of the last barriers to running pure IPv6 networks. However, in reality this is not the case. There are still two major problems to overcome.

First, many of the Top Level Domains (TLDs) do not support IPv6 (AAAA) glue records. This is the next "layer" in the hierarchy below the roots mentioned above. It includes major TLDs such as .org, .us, and most other countries. Without support at these TLDs, DNS servers (such as those for nabber.org) cannot be contacted natively with IPv6, an IPv4 lookup must be used instead.

Second, the domain registrars also need to support IPv6 (AAAA) glue records. These registrars typically have a web interface in which to change the IPv4 glue records and name of the domain's DNS servers to use. Many of the registrars have not added this support for IPv6 glue records so that it is accessible to end users. The end result is the same, IPv4 must be used to query DNS records at second level domains like nabber.org, IPv6 cannot be used.

As it stands today, the only way DNS can be used with ONLY IPv6 is if 1) the requested TLD supports it, and 2) the domain registrar for that domain supports it. The odds of having both of these happen is extremely low.

UPDATE: My DNS Check tool will now check for full IPv6 compliance as described above.
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iPod Killer 
Thursday, February 1, 2007, 9:41 PM - Computing Technology, Hardware
What if I told you that I had a device that has no limit on the amount of music that you can listen to? What if I told you that you could listen to the latest sports scores, news, and music instantaneously and in real time. There is no need to download podcasts with your computer. What if I told you that it would run for hundreds of hours before the battery needed to be recharged or replaced? What if I told you that this device cost pennies on the dollar compared to an iPod? This technology exists today and has been around for over 100 years, it is called, radio.
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Time Warner Cable Business Class 
Wednesday, January 31, 2007, 1:39 AM - Computing Technology
If any of you have ever tried to find out information about Time Warner business class cable internet in the San Diego area, you will notice that the website is lacking any real information, like prices and speeds. I was interested in switching from DSL to cable because I really hate paying AT&T (formerly SBC) for a phone line that I rarely use (I called and they do not offer naked DSL). I was hoping they would offer comparable prices to what I am currently paying for DSL from DSLExtreme, but not even close:

Time Warner Cable Business Class


$149 per month
4000 kbps down/384 kbps up (plans available up to 10 Mbps down/8 Mbps up)
Includes 5 static IP addresses
Allows for servers

DSLExtreme


$55 per month (plus basic phone service approximately $11)
3000 kbps down/512 kbps up
Includes 8 static IP addresses
Configurable firewall (All servers blocked, major ports blocked, no ports blocked)
Configurable reverse DNS entries
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The Solution to San Diego Traffic 
Monday, January 29, 2007, 10:06 PM - Public Policy, Law
Posted by Administrator
The San Diego traffic situation, while not as critical as Los Angeles, is continuing to grow. This is largely because of people commuting to and from work. The problem is that the National Highway System was not designed for short commutes. It was designed for long haul transportation, traveling large distances at a time. Bigger freeways aren't the answer, the solution is in getting people to use existing streets more.

Currently the plans to expand the freeway system include adding more lanes. This will not be sufficient. Adding more lanes will only add to congestion because there will be more lane changes when entering and exiting the freeway. And those making short trips will continue to remain the right lanes, acting as obstacles slowing down all those trying to change lanes and adding to the problem.

Car pool lanes and flow control traffic lights have potential to help, but they can't reduce the demand for freeway usage. This assumes that more people will actually carpool, which is unlikely when traffic is the worst, during the rush hour commute. Flow control has been shown to help, but as traffic continues to increase these will only be helpful if they have longer red cycles to keep too many cars from actually entering the freeway.

People are still willing to get caught up in traffic on the freeway rather than use the streets. We have to ask, why? The answer is that in their current state, the streets in San Diego don't make it easy to get around.

Nearly every intersection in San Diego has left turn lanes with protected arrows. This means that there is a traffic light dedicated to left turns, with a left turn arrow for the green light. These are largely unnecessary in many locations, near housing subdivisions or apartment complexes. To start, this is problematic because these slow down the traffic light cycles. Where medians are present, backed up left turn lanes can even block or congest traffic that is going straight through the intersection.

In addition, nearly all lights are sensor based. A particular direction will only turn green if a car is present. However, when cycles are so long, there is almost always at least one car present, except for at night. In rare cases the lights are synchronized. This needs to be done. On the major streets, the lights can be timed such that someone traveling at the speed limit will get green lights the entire way.

By removing left turn lights and synchronizing traffic lights, the flow of traffic through the city can be greatly improved, alleviating some of the demand on our freeways.
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Ticketmaster Website Fataly Flawed 
Sunday, October 22, 2006, 5:57 PM - Computing Technology
Upon attempting to purchase tickets for the World Series when they went on sale the morning of October 16, I discovered several design flaws in the Ticketmaster Website. Make no mistake, these are not simply problems because the website had more traffic than usual, the availablity of the website was fine. These are reliability issues that could effect anyone at any time. They are only more prevalent and noticable when there is a high demand for tickets for an event.

For some background, buying a ticket from the Ticketmaster Website normally consists of the following steps:

1. Find your game/event
2. Select number of tickets to request and section
3. Enter queuing webpage and the wait time is displayed, depending on demand
4. Purchase requested tickets, if available

First Flaw - No support for mulitple events


I began by trying to optimize my chances at being able to attend just one World Series game in Detroit. So naturally right when they went on sale at 7 AM (PDT) I refreshed the page for both Game 1 and Game 2, made my selections, and entered the queue. A few minutes later I was informed that you could not be in the queue for two events at the same time. I was now 5 minutes behind everyone else and had to re-enter the queue for a single game. Clearly, it is nearly impossible that anyone can attend more than one World Series game by purchasing tickets through the website.

Second Flaw - Number of tickets does not automatically adjust


As outlined above, you select the number of tickets that you want before entering the queue. If you exit the queue, and that number of tickets is not available anymore it gives an error message. You must then go back to the ticket selection page and change the number of tickets you are requesting. In this case 4 is no longer an option. Then you must re-enter the queue and wait AGAIN. This seems unnecessary. It would save everyone some time if the system simply downgraded your ticket request to the number available upon exit from the queue as required.

Third Flaw - Faulty queuing system


The first computer that I tried entered the queue for Game 2 and it gave a wait time of greater than 15 minutes. Fine. So I waited, the number began to come down and finally settled at 8 minutes. It remained there for about 20 minutes. I did nothing since I did not want to lose my "place in line" under any circumstances. So I loaded up the same game on my second computer. Would you believe that it actually loaded up BEFORE the first computer to inform me that there were no tickets left? That's right. So just for kicks I decided to go to work and leave the page loading on the first computer. I returned and over 12 hours later, the screen displayed exactly the same thing! No error, no "sorry, we are out of tickets." It still said that I had 8 minutes remaining in the queue!

As far as I am concerned, three strikes and Ticketmaster is out. I have considered boycotting the company because of this and the exorbatant "services fees" that they add to the price of a ticket. However, this is means giving up going to just about any major event ever again.
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