Does Verizon have IPv6 on their LTE network everywhere or is it limited
to specific regions? I ask because I have a Verizon LTE iPad just
upgraded to iOS6 (which supposedly added this capability), but it's not
getting an IPv6 address on the LTE interface. Or does Verizon now need
to authorize these newly capable devices as IPv6-able?
~Seth
My understanding, and experience (albeit with Android), is that all VZW LTE
is IPv6-capable.
I'd love to hear if Apple or VZW is at fault here, or if something weird is
happening ...
/TJ
I'm also curious about this.
Jared Mauch
Verizon has ipv6 everywhere they have LTE. Verizon also requires it on all
their LTE devices that they sell.
Your problem is likely with Apple, they have not yet supported ipv6 on the
cellular interface afaik.
CB
Oh... It works...
Your IPv4 address on the public Internet appears to be 70.194.10.15
Your IPv6 address on the public Internet appears to be 2600:1007:b010:a057:d91a:7d40:9871:f1a3
10/11 tests run
Looks to work.
-- snip--
Your IPv4 address on the public Internet appears to be 70.194.10.15
Your IPv6 address on the public Internet appears to be 2600:1007:b010:a057:d91a:7d40:9871:f1a3
The World IPv6 Launch day is June 6th, 2012. Good news! Your current browser, on this computer and at this location, are expected to keep working after the Launch. [more info]
Congratulations! You appear to have both IPv4 and IPv6 Internet working. If a publisher publishes to IPv6, your browser will connect using IPv6. Note: Your browser appears to prefer IPv4 over IPv6 when given the choice. This may in the future affect the accuracy of sites who guess at your location.
Your DNS server (possibly run by your ISP) appears to have IPv6 Internet access.
Your readiness scores
10/10 for your IPv4 stability and readiness, when publishers offer both IPv4 and IPv6
10/10 for your IPv6 stability and readiness, when publishers are forced to go IPv6 only
Click to see test data
(Updated server side IPv6 readiness stats)
Oh... It works...
Your IPv4 address on the public Internet appears to be 70.194.10.15
Your IPv6 address on the public Internet appears to be
2600:1007:b010:a057:d91a:7d40:9871:f1a3
10/11 tests run
Cool!
That is from an ipad on vzw LTE? Ios6?
CB
Yes...
Please don't hack or ddos it 
I'm guessing there will be a lot of new ipv6 traffic from LTE handsets on vzw tomorrow.
Should be interesting if apple turned on their Phobos domains for App Store as v6 via akamai. I would expect a lot of traffic to shift then.
- Jared
thank god for unlimited 4g on vz hold onto it while you can they are
trying hard to kill it!
One other thing... When on non-v6 wifi, it appears to still be using LTE for v6... (At least according to test-ipv6.com)
This could result in some unexpected usage patterns..
- Jared
Well, that's true under iOS 5, but iOS 6 released yesterday (and
assuming you have a third gen iPad with LTE) was supposed to correct
that. It runs IPv6 like a champ on wifi but I was excited to install the
update to finally have my first IPv6 connection that wasn't through my AS.
~Seth
Huh, so I come home and now I'm getting IPv6 from Verizon LTE. But I
definitely wasn't at the office. I verified with an app called "IT
Tools" that shows the interfaces and routing table, plus it does
traceroute/ping. Maybe the nearest tower over there doesn't support
IPv6? Odd.
Running test-ipv6.com it passes all tests except "test if your ISP's DNS
server uses IPv6".
~Seth
Safari on the iPad seems to be preferring A over AAAA if a hostname has
both, though. I can browse to a bracketed IPv6 address so it is working.
~Seth
Did Apple use their version of Happy Eyeballs on the iPads?
ISTR they cache certain timeouts, so if IPv6 was failing before it may take
awhile for it to become preferred again.
/TJ
Well, I can try creating a new DNS record that never existed before and see.
~Seth
It seems you may be correct.
~Seth
Safari is definitely preferring IPv4.
In a happier note, if you tether a device via hotspot on an IOS6 iPad, the clients get native IPv6. Strangely, they get addresses out of the same /64 as the iPad's LTE interface. Anyone know how that is working? I would have thought they would use prefix-delegation, and there would be a separate routed /64.
thanks,
-Randy
I don't know about Apple devices on VZW, but my Android phone definitely has IPv6 connectivity on VZW 4G LTE in Pittsburgh.
jms
Prefix delegation isn't generally available in mobile networks yet, that'll come in the next few years. It's probably using ND proxy or similar technique.
<https://tools.ietf.org/html/rfc6459> is a good starting point for further study, more specifically <https://tools.ietf.org/html/rfc6459#section-5.3> to answer your above question.
"Please don't hack or ddos it "
Unfortunately, while you do get an ipv6 address, mobile terminated data
doesn't work, so you don't have to worry about this. It is firewalled by
Verizon.
I actually tried to set up a VPN on a LTE data card using the ipv6 address
since the IPV4 one is behind carrier grade NAT. I found out the hard way
that was a no-go, either.
One more tip: IPv6 will work over the legacy 3g network. Don't ask me
much about it, but it "tunnels" it using eHRPD to the same IP/IPv6 headend
to enable seamless EVDO/LTE handover.