Airport Extreme and Cox Internet IPv6 Problem

I did not try local link only with Google DNS. I reconfigured from Cox DNS local link only to Google DNS and then reset the IPv6 to auto.

Express is 100meg max. ,extreme is faster on my ultimate cox plan. I disconnected my express's. Wireless extreme 30' feet away is 130 down. Wired is 350 down.

About a week ago I changed my iPv4 & iPv6 settings to utilize the Google DNS, and all was working fine including when I ran the test iPv6 it came back a 10/10 score, today when for no reason than wasting time i ran the test and it comes back 0/10, no iiPv6 addresses detected, I have made no changes to any settings, just don't understand the new test results

Other than the failed test, is your connection stable? Do your devices and Apple router still have IPv6 addresses or have their addresses gone away?

There is another popular test site that tests both IPv4 and IPv6.

http://ipv6-test.com/

This is what a successful test looks like. My ISP has just started rolling out IPv6 so they haven't configured hostnames for their IPv6 addresses yet.

After testing at the site noted above restart your modem and see if you test results come back positive. If not restart the Apple router and test again.

Connection is stable, speeds are good ran the test you linked and failed, restarted the TC and everything came back 10/10 on test iPv6 and 18/20 on the new test site you linked. Any idea what happened, I had not reset my TC or made any changes since my last successful testing

As usual thanks for your help and speedy response

Impossible for me to know what went wrong. All I can do is suggest ways to have a successful configuration from feedback provided here and elsewhere.

Are you using Google DNS settings for both IPv4 and IPv6 or just one of them. If just one of them, which one?

On the new test I linked to what were the tests that failed?

I am using both iPv4 & iPv6..This time the test came back 19/20 and failed on the IPv6 Host Name, just like the screen shot you posted

Thanks for the feedback YatBob.

If you lose IPv6 again in the future let us know whether your Apple router and computer lose their IPv6 address settings (see screenshot examples.)

Hello,

Located in Cleveland and I have been having many of the above mentioned disconnect problems (once a day up to 5-6 times day) with Cox and Airport Extreme since the beginning of the year. Cox Preferred (50gb package). Cox technicians were out to the house a total of four times, filters, all new connectors, new line from the street etc. None of these actions did anything including my swapping the modem.

A few weeks ago a Cox technician had me implement the IPv6 Local Link fix. My experience with the Local Link was that it did basically nothing for me. Outages still happened on a infrequent no pattern basis.

Yesterday everything totally quit working. Determined that the modem had gone bad (no light sequence). Reinstalled the original modem but could not get a connection to Cox to switch the Mac number using a hard wire directly to the modem from the PC. Called Cox, the technician was able to make the switch and get everything working. The Cox technician was a good guy so I started talking about all of these issues we all have been experiencing. During this conversation he told me that a major IPv6 upgrade was performed on Tuesday night (4/26) in most Cox major markets (I remember, LA, Phoenix, VA, Cleveland, but there were more he rattled off).

After I hung up with him I spent the next 2 hours trying everything I knew to reconnect the AE to the working modem. The Apple AE app showed that every time the modem and AE were connected the internet connection would break. So finally I gave up and drove up to Best Buy and bought a new Netgear router.

When I got home I decided to try one more thing before installing the new router. I RESET THE MODEM TO FACTORY SPECIFICATIONS. Remarkably, everything started working and has not gone down at all in the last 20 hours. On top of that I'm in automatic IPV6 mode and have both IPv4 & IPv6 connections to Cox. Test-IPv6 reveals 10/10 tests passed. The best prior to this was 0/10 passed.

YMMV, but I thought I would share this info. I know everyone is thinking this will be fixed through a firmware upgrade, maybe it is worth your giving this a shot.

Thanks for the info....let us know how/if that (reset) works....also, did you set up with EXACT same configs?

Back in December, before I was aware of the Iv6 issue I purchased new Airport Extreme to replace my same version Airport Extreme thinking I had bad router - essentially same as a reset - worked for a few days, had issues, tried Google DNS, had issues, changed to local link only been working fine ever since - no speed issues - 300+down / 30+up.....(my config is Arris SB6190 and Airport Extreme)

Yes, I will. Modem is Motorola SB6141.

My main point in posting is to point out that something Cox did during this recent upgrade may have changed the landscape. We all know that Cox is not going to inform us with a "Technical Bulletin". Maybe a factory reset does something that we don't see by just tweaking settings? I reset to the same Network name, password and security settings, otherwise left everything stock. Right now I'm not going to touch anything, just try to determine if it is really better.

Also, I failed to mention that I am seeing 60-65gbs speeds on my 50gbs service.

dhlewis21 I don't think you may know if whatever you have done "works" until it has held without disconnection or other issues for at least a couple days.

I have maintained my Time Capsule at the local link all week and have had no issues. As mentioned, my plan is the Cox Premier so I am supposed to get 150 down and 10 up, and via ethernet to the Time Capsule my iMac has consistently been getting 168-180 down and 12-15 up. I did have to install a new modem to get those speeds though, a DOCSIS 3.0 rated to 340 Mbps.

I don't see how ipv4 versus ipv6 could make any possible difference right now since there are no ipv6 connections yet.

I mean looky here

http://www.ipv6forum.com/ipv6_enabled/approval_list.php

a gang of ipv6 "enabled" sites dating back to 2009 and yet not one ipv6 connection anywhere yet.

I go with what works, and by the time ipv6 makes a difference I am sure Apple or Cox will have another solution.

If the Google DNS works for you, go with that, but if not local link is solid for me, and theoretically speaking, I don't see how it could make any difference until there are ipv6 connections.

I do appreciate all the help people are offering on here.

The dreaded Cox ipv6 upgrade has reached southern Orange County overnight. Fortunately, I had put a link to this thread away in Notes about 6 weeks ago. The link-local workaround seems to be OK.

If anybody hears something useful from Cox (like they fixed their implementation), please post. And thanks to all who shared info...

I have again lost iPv6 and the Apple router and computer did not lose their IPv6 address settings

All continues to be well with the local link setting. No loss of connectivity all green lights on AirPort Utility.

Just tested ethernet connected iMac over 169 down / 12 up (Premier Cox plan supposed to get 150/10) and iPhone 6plus sitting right next to the iMac got exactly the same speeds via Wifi, if not a bit higher.

However WiFi speeds farther away from the Time Capsule do drop quite a bit as we go out a few hundred feet away, or go upstairs, with multiple intervening walls, even with 1 - 2 bridging Airport Extremes.