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IPv6 in 2016

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IPv6 in 2016

BT are announcing their network will be IPv6 ready by the end of 2016.  Such a flurry of BT announcements.
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VileReynard
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Re: IPv6 in 2016

PC's are not IPV6 ready though.
Accessed the internet via a 2006 laptop yesterday...

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Re: IPv6 in 2016

I'm not up to speed on IPv6, but I think an old PC with just IPv4 can sit behind a modern router and not notice the difference.
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Re: IPv6 in 2016

Quote from: vilefoxdemonofdoom
PC's are not IPV6 ready though.
Accessed the internet via a 2006 laptop yesterday...

Rubbish! When I was on the IPv6 trial I had no issues using IPv6 on XP desktop PCs.
jelv (a.k.a Spoon Whittler)
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pwatson
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Re: IPv6 in 2016

The point is that ISPs are stopping the head in the sand approach to IPv6 and embracing the fact the the Internet is now a hybrid IPv4 and IPv6 environment.  
My ISP offers IPv6 connectivity and it's completely transparent to me.  As more sites work with IPv6 (and IPv4 is withdrawn) users shouldn't notice.  Legacy hardware may fall by the wayside of course, but that's the way the IT world does business!  
VileReynard
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Re: IPv6 in 2016

How does a router firewall work with a mixed IPV4 <==> IPV6 setup?

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Re: IPv6 in 2016

Hadn`t got a clue, what IPv4 or IPv6 was ... so googled IPv4.. and found this
http://www.networkworld.com/article/2985340/ipv6/arin-finally-runs-out-of-ipv4-addresses.html
Read a bit of it, and am a bit wiser now....  Huh
rongtw
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Re: IPv6 in 2016

Linus explains it here Smiley 
https://www.youtube.com/watch?v=aor29pGhlFE
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Re: IPv6 in 2016

Quote from: vilefoxdemonofdoom
How does a router firewall work with a mixed IPV4 <==> IPV6 setup?

I'd assume its something similar to a dns server  whereby the outgoing ipv4 packet has a request / identifier number in the packet which is then received by the router. The router then makes its own outbound request via ipv6, gets the result back, looks through its pending requests and then answers that in ipv4 format.
At a guess..
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nanotm
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Re: IPv6 in 2016

some routers use upnp to auto tunnel 4 to 6 or 6 to 4 but not all do it and even among those that do they don't all do it the same way.....
BT might finally be about to switch on ipv6 capabilities on their network but something tells me that will be the start of a lot of problems, of course many of the mobile operators having been using ipv6 for the last few years for smartphone data connections and that's been working well so who knows maybe when they finally flick the switch to allow native ipv6 support it will all just work, although why they would suddenly have such a change of heart after spending so long refusing to switchover and trying all kinds of half assed implementation trials is a bit of a wonder /
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pwatson
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Re: IPv6 in 2016

Dual stack support on routers means that IPv4 and IPv6 co-exist without issue or need for tunneling.  The networked device (ie PC) makes the decision whether to use 4 or 6 to communicate with a particular server.  
Quote
ping www.google.co.uk
Pinging www.google.co.uk [2a00:1450:4009:80c::2003] with 32 bytes of data:
Reply from 2a00:1450:4009:80c::2003: time=15ms
Reply from 2a00:1450:4009:80c::2003: time=18ms
Reply from 2a00:1450:4009:80c::2003: time=17ms
Reply from 2a00:1450:4009:80c::2003: time=16ms
ping community.plus.net
Pinging community.plus.net [212.159.9.110] with 32 bytes of data:
Reply from 212.159.9.110: bytes=32 time=19ms TTL=242
Reply from 212.159.9.110: bytes=32 time=19ms TTL=242
Reply from 212.159.9.110: bytes=32 time=19ms TTL=242
Reply from 212.159.9.110: bytes=32 time=57ms TTL=242

IPv6 *only* networks will, of course, require a method to contact legacy IPv4 servers (if any are left when IPv4 is 'retired').  The reverse is also true of course in that if ISPs switch off IPv4 support then tunneling will likely be needed from IPv4 LAN devices to the IPv6 WAN.  Don't see that happening any time soon though!
The principles of firewalling aren't affected by IPv6 (TCP, UDP and ports remain the same, just the address space changes).  I'm sure that router GUI tools for manipulating firewall rules will become more sophisticated as IPv6 becomes more common.
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Re: IPv6 in 2016

I downloaded a firmware update for our external firewall earlier this year. The menus on the control GUI then provided facilities to manage both IPv4 and IPv6. I guess the same approach will be available for many boxes if they are not already IPv6 enabled.
The logistics of BT/PlusNet rolling out replacement preconfigured routers to all their customers by post doesn't bear thinking about.
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nanotm
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Re: IPv6 in 2016

maybe BT are having the same thoughts given the press release about the numbers of people still using old routers that are not ipv6 compatible, perhaps there planning to do some CG-NAT based option at the exchanges to handle the 4>6 /6>4 functionality rather than roll out millions of new routers ...
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pwatson
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Re: IPv6 in 2016

My router (Billion 7800X) has a page for setting firewall rules but it is far from elegant as you need to enter addresses manually.  For IPv4 this isn't so bad but IPv6 entries would be prone to error?   I'm sure that mature IPv6 devices will allow drop down selection of devices in the ARP table etc to make such configuration tasks easier in the future.
nanotm
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Re: IPv6 in 2016

your lucky the 8800axl i'm using at the moment has ipv6 problems in the firmware side of things, regardless of the router's settings it changes the o and m state flags continually depending on what device(s) are connected, billion are looking into the problem though and as an interim measure have advised disabling ipv6 on the pc adaptors, hopefully they will figure it out in the near future and release a new firmware, strange thing is the original 7800 had the same problem 6 years ago and they fixed that so why the problem is back again is a bit of a mystery /
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