Any known issues with smart DNS & 2degrees

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Any known issues with smart DNS & 2degrees

JimsGardenSheds

9 posts

Wannabe Geek

#278430 15-Oct-2020 10:07

Hello,

I just trying to troubleshoot a few issues recently. I'm using a smart DNS and have moved recently to 2degs from Spark.
Does anyone here actively use a smart DNS with 2D wihtout any issues?
I have updated DNS in my Fritzbox in both locations (account) & Network Settings but there appears to be a substantial drop in "loading" time.

Any thoughts?

Jim

Spong

1005 posts

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Trusted

#2585765 15-Oct-2020 10:46

It's pretty certain your problem is because 2Degrees uses CGNAT by default, and you no longer have a unique external IP address. Your Smart DNS service will need to know it's really you using their service so with Spark you will have had a static IP or a dynamic IP that could be updated at your Smart DNS service using one of a number of methods.

With 2Degrees CGNAT, you effectively share an IP with several others. You'll need to contact 2Degrees and advise them. They'll either give you a static IP for $10 a month or maybe a free one if you ask nicely and advise what's happening to you.

Tivo upgrades to operate with the new OzTivo EPG, support and service. Over 400 performed here so far. See: www.hillcrest.net.nz

JimsGardenSheds

9 posts

Wannabe Geek

#2585915 15-Oct-2020 13:28

thanks for the explanation.
That's really interesting. I do "update" my IP via the dns desktop app that my dns service comes with (yes i did notice my IP kept changing randomly) - I had no idea users "shared" IPs.. :(

I will try and talk to 2D about a static

Many thanks

sorceror

163 posts

Master Geek

#2586447 16-Oct-2020 22:31

i would think most smart DNS providers wouldn't have an issue with supporting shared IP addresses, those are very common these days.

Spong

1005 posts

Uber Geek

Trusted

#2586454 16-Oct-2020 23:21

sorceror:

i would think most smart DNS providers wouldn't have an issue with supporting shared IP addresses, those are very common these days.

If they did this, they'd potentially be opening their doors wide to a huge bunch of freeloaders. For example, the well respected Smart DNS service I use, allows access from up to 3x unique IP addresses. If they allowed access from CGNAT addresses, everyone else using that shared address would be able to take advantage of a single account.

Tivo upgrades to operate with the new OzTivo EPG, support and service. Over 400 performed here so far. See: www.hillcrest.net.nz

sorceror

163 posts

Master Geek

#2588338 20-Oct-2020 13:28

Spong:

sorceror:

i would think most smart DNS providers wouldn't have an issue with supporting shared IP addresses, those are very common these days.

If they did this, they'd potentially be opening their doors wide to a huge bunch of freeloaders. For example, the well respected Smart DNS service I use, allows access from up to 3x unique IP addresses. If they allowed access from CGNAT addresses, everyone else using that shared address would be able to take advantage of a single account.

and how would this "huge bunch" of freeloaders know that the particular Smart DNS service allows their particular IP? while you are right, it's not a realistic scenario.

also it's not just CGNAT, plenty of people share the IP address of their business, school, place of dwelling, "anonymous" proxy etc. Let alone mobile/cellular users which are like 90% behind shared IPs.

Not allowing these users to pay and access the service would do far more damage to the business than the odd person that just happens to freeload through a CGNAT arrangement.

JimsGardenSheds

9 posts

Wannabe Geek

#2592474 27-Oct-2020 16:32

Thanks for the reply - Does anyone use a Smart DNS service with 2D and experience issues?
I'm with Getflix, but happy to try an alternative to test to see if i can improve my experience.

Regards

michaelmurfy

meow
13244 posts

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Lifetime subscriber

#2592487 27-Oct-2020 17:20

JimsGardenSheds:

Thanks for the reply - Does anyone use a Smart DNS service with 2D and experience issues?
I'm with Getflix, but happy to try an alternative to test to see if i can improve my experience.

Regards

As quoted in the first reply the issue is because you’ve got CG-NAT on your connection. We don’t otherwise talk about Smart DNS products in public view on Geekzone sorry.

Michael Murphy | https://murfy.nz
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chevrolux

4962 posts

Uber Geek
Inactive user

#2592536 27-Oct-2020 18:37

sorceror:

and how would this "huge bunch" of freeloaders know that the particular Smart DNS service allows their particular IP? while you are right, it's not a realistic scenario.

Shodan.io

....very, VERY, easy to find any kind of server you want out there.

sorceror

163 posts

Master Geek

#2592856 28-Oct-2020 17:56

chevrolux:

sorceror:

and how would this "huge bunch" of freeloaders know that the particular Smart DNS service allows their particular IP? while you are right, it's not a realistic scenario.

Shodan.io

....very, VERY, easy to find any kind of server you want out there.

Shodan doesn't tell you which DNS servers allow queries from your IP address. Unless you are suggesting that someone gets a list of every single DNS server on the Internet from Shodan and then tests each one, comparing the responses to see which ones give different results, and then validates each one of these anomalies to see if they can actually access geo-blocked content. And this only works if the DNS service replies to random IP addresses (many have network-level ACLs which means Shodan wouldn't even see them). Come on mate.