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    New IPv6 Trial for Sky Broadband & Sky Fibre

    This is a discussion on New IPv6 Trial for Sky Broadband & Sky Fibre within the Sky news and announcements forums, part of the SkyUser Announcements category; Originally Posted by Scubbie I have raised this with NewsReader. Hopefully he will oblige and do so soon. Of course ...

    1. #21
      gymno's Avatar
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Quote Originally Posted by Scubbie View Post
      I have raised this with NewsReader. Hopefully he will oblige and do so soon.

      Of course anything discussed within the confines of any Beta Group can't be posted on a public forum until consent has been given. This doesn't mean that people won't be wanting a general idea though.

      Of course once Sky does launch IPv6 across the country people will also very much be wanting to know what to do, if anything, and how things may be different with IPv6.
      Nothing is what i'm assuming / predicting.
      Last edited by gymno; 22-08-15 at 06:36 PM.


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    3. #22
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      det
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Having an IPv6 sub forum would be a good idea, there's a lot of FUD floating around so it'd be good for people to discuss it!
      speedyrite likes this.

    4. #23
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Quote Originally Posted by andrewjr View Post
      Have never used Sky's DNS servers, I have always used google's and only just yesterday added them for IPv6
      It's inadvisable to not use your ISP's recursive NS, it'll have a negative impact on your internet performance overall.

      Sky anycast their recursive name servers so you should always hit the closest one, using an off-net server will increase the reply time to resolve queries. Not to mention you won't be using the caching NS on your CPE itself, which will also help with response times.

      Using off-net servers will also mess up CDN steering, so your Youtube, Netflix, etc could be served by sub-optimal servers/paths.

      I understand that some people, for whatever reason, may want to use 3rd party recursors, but just be aware that there are negative side effects.
      speedyrite likes this.

    5. #24
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      I think it's the general real-world performance of sky's dns servers that has people opting for alternatives.
      https://code.google.com/p/namebench/

    6. #25
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      On ipv4 I do not use the DNS functions of the router at all, my DHCP and DNS is handled by a DHCP server and a primary DNS server l run on a seperate PC on my LAN. If my primary DNS server cannot resolve it, then it forwards the requests to the google DNS servers.

      Using DNS Benchmark there is statistically little if any difference between using the Sky DNS servers and Googles, as seen below:

      New IPv6 Trial for Sky Broadband & Sky Fibre-capture.png

      As for CDN issues, here's a nice piece of puttty from Google themselves, there is mention of CDN and thier action on it.

      https://developers.google.com/speed/...-dns/faq?hl=en
      -----------------------------------------------------------
      To every rule there is an exception, and vice versa
      -----------------------------------------------------------

    7. #26
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      There is little difference between google and sky's
      sky's are closer ofc by around 3ms

      the main reason i switch to google is to bypass sky's rate limited cdn servers

      umm
      3mbit from a sky cdn server on the core network
      or
      60mbit from a cdn server in the netherlands
      umm think i will take a netherlands cdn server
      no thanks sky

      speedyrite and gymno like this.

    8. #27
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      So sky have upped their game regarding dns then?
      'Best DNS' tool

      I have read that if using your isp's dns servers, then one should enter the router's ip address as opposed to the actual server addresses in order to take advantage of the router's cached lookups.

      Is that correct?
      Also, i assume that the namebench test won't be taking that advantage into account?

    9. #28
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      Smile Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Quote Originally Posted by gymno View Post
      So sky have upped their game regarding dns then?
      'Best DNS' tool

      I have read that if using your isp's dns servers, then one should enter the router's ip address as opposed to the actual server addresses in order to take advantage of the router's cached lookups.

      Is that correct?
      Also, i assume that the namebench test won't be taking that advantage into account?
      When you set up your routers DHCP you generally put the address of the router as the primary server, it then either resolves it from cache ( if it can ) or passes to the DNS servers it has been given by the ISP when connecting. Of course this is where you put ANothers DNS server addresses if you don't want to use your ISP's DNS servers.

      As for using your routers DNS cache that all depends on the router really. For example, my Vigor had the ability to resolve a name to LAN machine before pushing the request onto the WAN DNS servers, something the Netgear cannot do, hence the need for me to run my own DNS server.

      Isn't IT fun...
      -----------------------------------------------------------
      To every rule there is an exception, and vice versa
      -----------------------------------------------------------

    10. #29
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Quote Originally Posted by marjohn56 View Post
      As for CDN issues, here's a nice piece of puttty from Google themselves, there is mention of CDN and thier action on it.
      https://developers.google.com/speed/...-dns/faq?hl=en
      edns-client-subnet certainly helps mitigate this issue, provided the CDN supports it.


      Quote Originally Posted by Shonk View Post
      the main reason i switch to google is to bypass sky's rate limited cdn servers

      umm
      3mbit from a sky cdn server on the core network
      or
      60mbit from a cdn server in the netherlands
      umm think i will take a netherlands cdn server
      no thanks sky
      Why would Sky rate limit CDNs on their own network? I'm not doubting that you may've experience poor performance once, but I'm pretty sure it's not because of them arbitrarily squashing CDN bandwidth. They're an ISP, they want their customers to have good performance, and this reasoning is just counter-intuitive.


      RTT is only one component of total recursion time. Positive cache hits is another variable. Sky is relatively large and should have a pretty high percentage of positive cache hits for common domains. Google will probably have a larger cache of more obscure domains which will help bring its response time for some benchmarking tools closer. If you've got your own local caching recursive NS that forwards upstream to another recursor, that's still better always going to 8.8.8.8 direct.

      Anyway, this is quite off topic now, sorry for derailing an IPv6 thread.
      Last edited by det; 24-08-15 at 07:31 PM.

    11. #30
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      Re: New IPv6 Trial for Sky Broadband & Sky Fibre

      Quote Originally Posted by marjohn56
      Isn't IT fun...
      Life is all fun & learning & in these threads, for me the two collide.
      Cheers.

     

     
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