Author
Message
DamonHD
Posts:6158
Moderator
Member since: 2006-11-30
:: Quote ::
Subject: IPv6
Hurrah!

I just got my main site (kinds sorta) working on IPv6, the 'new' Internet protocol that we will have to (after more than a decade of saying it) move to now that there are virtually no new IPv4 addresses left.

I needed to make some system config changes on my Solaris server, squash some bugs in my Java code that were assuming IPv4, set up my Mac to be able to tunnel to IPv6 addresses over my existing olde worlde IPv4-only ADSL connection, and finally published an AAAA record or two. And now I can get to my remote site by its IPv6 address as well as its existing IPv4 addresses.

It's the modern world*, baby! B^>

Rgds

Damon

*I think that <1% of Internet traffic is currently IPv6.
October 11, 2011 12:31AM
Ian C. Purdie
Posts:2220
Senior member
Member since: 2008-12-12
:: Quote ::
Subject: Re: IPv6
Mate, could you put that in words the average [dumb] olden day person can understand?

I'm sure it's good news but, having read it twice, I still don't understand what you are saying.

I hope it's positive news.
October 11, 2011 06:14PM
DamonHD
Posts:6158
Moderator
Member since: 2006-11-30
:: Quote ::
Subject: Re: IPv6
The current addressing system and protocol for the Internet, Internet Protocol version 4 (IPv4) is just about out of steam. In particular there are very few spare IPv4 addresses to allocate to new users in spite of all sorts of contortions from reclaiming underutilised address space to NAT and dynamic allocation of address to mobiles and DSL users.

IPv6 is along to take its place and instead of ~2^32 (4 billion) addresses it has ~2~128 (256 billion billion billion billion) addresses.

IPv6 has some other advantages too, but that's the main one.

[en.wikipedia.org]

New users, especially on mobile or their gadgets, are going to have to be allocated IPv6 addresses rather than IPv4, so it's going to be increasingly important for Web sites to support IPv6.

Today, of ~184,000 requests to my IPv6-enabled server only 185 came over IPv6 (though it's a first day with DNS and so on not fully propagated).

Rgds

Damon
October 11, 2011 09:26PM
Joshua
Posts:2831
Administrator
Member since: 2007-03-16
:: Quote ::
Subject: Re: IPv6
Quote:
Today, of ~184,000 requests to my IPv6-enabled server only 185 came over IPv6

And probably 99% of that 185 would've tried an IPv4 address as fallback.

When I set-up internal company networks I'm still using IPv4 because it a) works b) is supported by all ISP's at the moment.

I'm not saying you shouldn't support IPv6. But don't worry too much (yet). Especially if you're not hosting from your own server it's primarily up to your host to support it.

FWIW I currently can't connect to "IPv6 only" websites at the moment simply because my ISP doesn't support it.

[edit to add]
An example of an IPv6 only website: ipv6.l.google.com
You either get to the G homepage or IPv6 is not supported by your ISP.



Edited 1 time(s). Last edit at 10/11/2011 11:45PM by Joshua.
October 11, 2011 11:37PM
Joshua
Posts:2831
Administrator
Member since: 2007-03-16
:: Quote ::
Subject: Re: IPv6
Forgot to say. A lot of the companies I'm servicing have network attached equipment running on very old Unix, Win3.X, Dos, OS2. Some of these machinery are expected to run for at least another 10 years. So IPv4 is not dead yet for quite a while.
October 11, 2011 11:55PM
DamonHD
Posts:6158
Moderator
Member since: 2006-11-30
:: Quote ::
Subject: Re: IPv6
Sure, but making what you can 'dual stack' eliminates some pain later.

BTW, on my Mac, the "6 to 4" tunnelling "just worked", given that I have a publicly-visible IPv4 address when at home.

And I kinda like the idea of having up to 16 billion billion IP addresses at home! B^>

Rgds

Damon
October 12, 2011 12:01AM
Joshua
Posts:2831
Administrator
Member since: 2007-03-16
:: Quote ::
Subject: Re: IPv6
Quote:
Sure, but making what you can 'dual stack' eliminates some pain later.

I'm not arguing about that Damon. I think it's great you are already "prepared". I just wanted to take away any worries (if there are any) for Ian (also considering he's not running servers of it's own).
October 12, 2011 12:15AM
DamonHD
Posts:6158
Moderator
Member since: 2006-11-30
:: Quote ::
Subject: Re: IPv6
Sure.

For people using hosted Web services it should all be largely invisible unless they have code that does something clever with a user's IP address.

Might be worth pressuring the hosting company to support IPv6 sooner rather than later to avoid missing out as its usage gets larger.

Rgds

Damon
October 12, 2011 10:20AM
DamonHD
Posts:6158
Moderator
Member since: 2006-11-30
:: Quote ::
Subject: Re: IPv6
Here's the first of my two pieces in The Register:

[www.theregister.co.uk]

Rgds

Damon
October 31, 2011 06:37PM
Joshua
Posts:2831
Administrator
Member since: 2007-03-16
:: Quote ::
Subject: Re: IPv6
Nice read!

Quote:
Have you the expertise to craft watertight IPv6 firewall rules, especially if you no longer use NAT and the protection it provides to internal machines as a side-effect?

I don't at the moment.
October 31, 2011 07:04PM

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