Home Networking / Router / & WiFi Gateway Help

[ComcastTuska]

Please keep this on topic..

1) Post your City, State

2) Your router or if your direct connected to the cable modem your host OS if you don’t mind

3) Post a screen shot of http://test-ipv6.comcast.net/  or a screen shot of your router with your IPv6 address, removing the host identifier from the IP address; Please keep the first /32 in the IPv6 address for the identifier so we can confirm you have a Comcast IPv6 address.

So what we are looking for is the host address (2001:558:6X) or the Prefix-delegation (2601:X)

[ComcastTuska]

Englewood, CO

Directly connected to the Cable modem with Windows 7 OS

[Baric]

Hudson, NH

Directly connected to cable modem (Motorola SB6120) with MacOS X 10.7.4

No IPv6

[EG]

Union, N.J.

Win.7 direct to Zoom 5341J modem;

[whfsdude]

Location: Washington, DC

Router: pfSense 2.1-DEVELOPMENT
Screenshot: of PD address on host. http://willscorner.net/tmp/comcast6pd.png

[GE90115B]

1) Fremont, CA

2) Connected via Router (Netgear WNDR4500) with DHCP mode selected in the IPv6 settings.

3)

[jlivingood]

1 - Philadelphia, PA

2 - Apple Airport Extreme

[ComcastJohn]

1 - Skippack, PA

2 - Apple Airport Extreme

3 - OSX

[cchubbuck]

1. Portage, IN

2. Modem: Motorola SB6121

    Router: Cisco Linksys EA4500

    Host OS: Mac 10.7.4 and iOS 5.1.1

3.

[jeffrylp]

1) Sunnyvale, CA

2) Linksys E4200v2

[ensee27523]

Near Palo Alto, California

Netgear WNR3500L router and Motorola 6120 modem

Delegated prefix 2601:9:xxxx/64

Started working today -  Thanks Comcast !!!

[Jason_J_R]

1) Modesto, California

2) Buffalo WHR HP G54 running DD-WRT v24 Release 2008-07-31 14:52 (SVN revision: 10070M)

http://www.dd-wrt.com/wiki/index.php/WHR-HP-G54

3) root@whr-hp-g54:~# ifconfig vlan1
vlan1     Link encap:Ethernet  HWaddr [removed]
          inet addr:67.181.[removed]  Bcast:67.181.[removed] Mask:255.255.254.0
          inet6 addr: fe80::[removed]/64 Scope:Link
          inet6 addr: 2001:558:4080:a:[removed]/64 Scope:Global

I used Wireshark to sniff and get the prefix as this build is pretty old and doesn't support SLAAC and/or dhcpv6.  Then I manually configured the ipv6 address and route.

I may hack around and see if I can figure out how to get dhcpv6-pd working, but I may just skip to a better build/router.

Also, note that Comcast is not filtering customer source addresses.  In a way, this is cool as I also have an HE tunnel and /48 allocation for 3 LANs at my house.  My hosts with HE IPv6 address space can still send out on Comcast's IPv6 network, and the return traffic will come back asymmetrically via the HE tunnel.

However, from "good neighbor" policy on the Internet, this is a bad thing.  I should not be able to source address space allocations which has not been assigned to me by my ISP.  I especially should not be able to source address space allocations of another ISP or direct RIR end-user delegation without a routing agreement with my upstream ISP, and only after my upstream ISP vets my routes and has proper BGP filters in place.

Having said that, I am really grateful to see Comcast taking the lead with DNSSEC and IPv6.

I know it's probably not on the near road-map, but I'd love to see end-user delegation of IPv6 name resolution and signed DNSSEC zones for these as well.

[tedjp]

Pleasant Grove, Utah (near Salt Lake City).

D-Link DIR-825 running OpenWRT. Prefix delegated to devices running Android, Debian & Windows 7.

`ip addr` from the router stripped down to the goodies:

3: eth1:
inet6 2001:558:6008:xx:xxx:xxxx:xxxx:xxxx/128 scope global
4: br-lan:
inet6 2601:7:7500:xx:xxx:xxxx:xxxx:xxxx/64 scope global

Took me a while to figure out I needed to request a non-temporary address in the DHCPv6 client since it wasn't the default.

[broquea]

Mountain View, CA

D-Link DIR-825, Linux and Windows 7 computers

Can't find the option for putting image in post, [img] doesn't seem to work, and don't see an attachment option. Either way I'm getting 2601:9:4600:24::/64 from DHCPv6-PD.

[jlivingood]

Also, note that Comcast is not filtering customer source addresses.  In a way, this is cool as I also have an HE tunnel and /48 allocation for 3 LANs at my house.  My hosts with HE IPv6 address space can still send out on Comcast's IPv6 network, and the return traffic will come back asymmetrically via the HE tunnel.

However, from "good neighbor" policy on the Internet, this is a bad thing.  I should not be able to source address space allocations which has not been assigned to me by my ISP. 

---

Well, I'm not sure that's the case. If you can PM me details we'll investigate what you may be observing.

[Mike C]

Severn, Maryland

Juniper SSG5

Business-class connection

[Mike C]

The host ID is temporary anyway And I've been running an HE tunnel for a long...long time..

[Mike C]

Still trying to figure out the DHCP-PD thing. Maybe one of you guys can help out?

From what I gather, a 0 IAPD-ID means pull from a random pool of available prefixes.

The SLA ID and SLA length are used internally by the router to grab the rest of the prefix off of that. I'm assuming since right now you're only offering a /64, the SLA length = 0, and my SLA ID can be anything I want it to be...

The odd thing is my firewall isn't assigning the prefix to the interface I tell it to assign...but if I go in manually to the interface and say "advertise this prefix", it works...

[Mike C]

C:\Users\Mike>tracert -d www.facebook.com

Tracing route to www.facebook.com [2a03:2880:10:1f02:face:b00c:0:25]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fe80::21b:c0ff:feb2:a84b
2 32 ms 15 ms 63 ms 2001:558:6020:11e::1
3 9 ms 9 ms 10 ms 2001:558:342:29::1
4 26 ms 9 ms 25 ms 2001:558:340:9b::1
5 16 ms 18 ms 36 ms 2001:558:0:f6b0::1
6 16 ms 16 ms 15 ms 2001:558:0:f5af::2
7 16 ms 30 ms 16 ms 2001:559::406
8 17 ms 16 ms 15 ms 2620:0:1cff:dead:beef::475
9 103 ms 95 ms 101 ms 2620:0:1cff:dead:beef::1d8
10 106 ms 95 ms 109 ms 2620:0:1cff:dead:beef::1c5
11 93 ms 94 ms 96 ms 2620:0:1cff:dead:beef::389
12 100 ms 92 ms 92 ms 2a03:2880:10:1f02:face:b00c:0:25

Just turned it up at home.

Halethorpe, MD

Juniper SSG5

[remaker]

1) San Jose, CA

2) Connected to Linksys E4200v1, Cisco DPC3008  Went live around 5-6PM Pacific, needed to reboot modem.

3) test ipv6 reports my address as  2601:9:3400:35:X:X:X:X, run from an iPhone 4S with iOS 5.1.1

[ardya]

1) Indianapolis, IN

2) Ubee D3.0 modem/Slackware 13.37 Linux as router/gw

3) Screenshot: http://www.ardynet.com/~ardy/comcast-ipv6.png

Also, radvd configured to autoconf lan boxes: Linux, Windows, iphone 4S, VMs.

[dj3001c]

Stockton CA

Cable modem Motorla SB6120 with Windows 7 Home Premium

[Kyndigen]

Location: San Jose, CA
Modem: Motorola SB6120
Router: Home-built Linux box with 4 NICs. Running Gentoo Linux 3.2.11-hardened. Used isc-dhclient-4.2.3-P1 to handle the prefix delegation + radvd-1.8.2 to distribute to the machines in my house.

Thank you for turning this on!

test-ipv6.comcast.net checks out, but I don't see a way to link my screenshot into this post. In lieu of that, here's some output from ipconfig on the Windows box that I'm typing this on, plus a ping of google:

Ethernet adapter Top Ethernet Port:
IPv6 Address. . . . . . . . . . . : 2601:9:
Temporary IPv6 Address. . . . . . : 2601:9:

Pinging ipv6.l.google.com [2001:4860:4001:803::1011] with 32 bytes of data:

Reply from 2001:4860:4001:803::1011: time=103ms
Reply from 2001:4860:4001:803::1011: time=90ms
Reply from 2001:4860:4001:803::1011: time=114ms
Reply from 2001:4860:4001:803::1011: time=125ms

[jackrichins]

Did you configure your airport in host or router mode?

[kevj]

Millersville, MD

Router:

Netgear WNDR3700 V1

Router is set to Auto-Detect, and takes a 6to4 tunnel connection.

If i set the router to DHCP for the WAN connection, it gets different IPv6 addresses, but the test from the Win 7 machine fails.

Modem:

Model Name: SB6120
Vendor Name: Motorola
Firmware Name: SB612X-1.0.3.3-SCM00-NOSH

Test run form a Windows 7 PC.

I had to set up IPv6 to use the Comcast IPv6 DNS servers (with Google as backup) as I have OpenDNS IPv4 DNS servers configured on the router. Router was giving it's IPv6 address as the primary DNS, which wasn't working, as OpenDNS IPv4 servers do not apparently support IPv6 right now.

[broquea]

Your Netgear appears to be using 6to4, and whatever machine you tested with appears to be using Teredo.

[cbright6062]

When will the SB6120s be getting connection?

[Luieburger]

Kirkland, WA
Windows 7 64bit
SB6121 modem

Directly connected to my modem, I don't get an IPV6 gateway. http://www.dumpt.com/img/viewer.php?file=y97tioib7i60moxs3w86.png

With a router tunneling 6to4 for me, I get a gateway and can access ipv6 websites. http://www.dumpt.com/img/viewer.php?file=b1u2mqgeve0v8lg3sf6z.png

How do I go about getting a native IPV6 address from Comcast?

[EG]

---

Luieburger wrote:

How do I go about getting a native IPV6 address from Comcast?

---

If it hasn't yet been, you will have to wait for them to enable it on your local CMTS / system.

[Ben_S]

No IPv6 in Kent, WA either with SB6120 cable modem and Asus RT-N16 wireless router (using Tomato Firmware v1.28.7498 MIPSR2-Toastman-RT K26 USB Ext). Cable modem says:

     MDD IP Mode Override (MIMO): IPv4 Only

     Modem's IP Mode: IPv4 Only

The Comcast IPv6 test page shows an IPv6 address, but it's because Win7 is using Teredo. It shows no IPv6 for my Linux box.

Is there any way of finding out when Comcast might deploy IPv6 to the Seattle area?

Edit: I've quickly made a Google map with pins on all the cities reported in this thread as having working Comcast IPv6 service: http://goo.gl/maps/sL3Z

Anyone can edit the map to add their own city in the future (or I can lock it down to appointed persons only, if one of the moderators wants to take over or share maintenance).

Edit 2: Updated to include locations reported in the DSLReports thread at http://www.dslreports.com/forum/r27186774-IPv6-Evidence-of-Comcast-IPv6-CPE-Dual-Stack-CPE-and-CPEPD...

[Paraniod]

Nice map Ben...

[ardya]

Indeed, nice map.

[Murphy]

Horsham, PA

Linksys EA3500

Connection Type:      IPv6 - Automatic
          
Internet Address:      2001:558:6xxx:x:xxxx:xxxx:xxx:xxx/64
          
DNS1:      2001:558:feed::1
          
DNS2:      2001:558:feed::2

[Rybo85]

1. Lansdale, PA

2. Wireless Router: Netgear N600 WNDR3400

3.

[kevj]

Further to my previous post, I was able to get a DHCP IP in the correct prefix on my WNDR3700v1and get ipv6 addresses on my LAN machines, AND I was able to resolve ipv6 site addresses, but unable to browse them. I then found this post at BBR that had a link for updated firmware for the WNDR3700v1 which was supposed to resolve IPv6 issues on this router.

http://www.dslreports.com/forum/r27209241-IPv6-Netgear-WNDR3700v1-and-Ipv6-Issues

The link directly to the firmware site is: http://support.netgear.com/app/answers/detail/a_id/19565

*** WNDR370 V1 only!!!!!! I do NOT believe this is designed for the V2 router Oh, and it is apparently BETA software... Caveat Emptor

So I downloaded and installed, and rebooted my router, et voila...native IPv6 with the ability to browse native IPv6 sites...

[EG]

Ain't it GREAT when a "plan" comes together Kev ? !!!!!  

[Rugburn]

Antioch, California

I have multiple ip addresses from comcast, so I use an gigabit ethernet switch instead of a router..

Since there are no instructions on how to post a picture here, this is a link to my test-ipv6: http://img220.imageshack.us/img220/2604/ipv6c.jpg

Couple of issues I'm having with ipv6 enabled.  Youtube videos dont buffer unless I refresh the page, youtube embedded videos dont buffer at all,  Facebook loads very slowly, Google searches load slowly, google images load slowly..

When I disable ipv6, everything is fast, and buffer correctly again.

[dcwittlo]

1) Hawthorn Woods, Illinois (suburb north of Chicago)

2) Router is D-Link DIR-825 (started using Netgear WNDR3700v2 but it didn't work with IPv6)

3)

Here is the IPv6 Status Page from the router:

[jneiberger]

1. Denver, CO

2. Linksys E2500 and Windows Vista 

[bethontheharbor]

Oak harbor WA, station is Mt Vernon WA.. no ipv6 here according to our modem or router.

[ComcastTuska]

---

bethontheharbor wrote:

Oak harbor WA, station is Mt Vernon WA.. no ipv6 here according to our modem or router.

---

WA is a Cisco CMTS area, so no CPE v6 is not supported yet.

[Ben_S]

---

ComcastTuska wrote:

---

bethontheharbor wrote:

Oak harbor WA, station is Mt Vernon WA.. no ipv6 here according to our modem or router.

---

WA is a Cisco CMTS area, so no CPE v6 is not supported yet.

---

Thanks for the official confirmation. Seeing lots of fellow WA users looking forward to IPv6

[dbpaladine]

OTHER than being able to access more IP numbers, what good is IPv6 REALLY for? It's no faster than IPv4 and the internet has not stopped working for the world!!!

[kevj]

From the consumers perspective, IPv6 is really of limited use *RIGHT NOW*. The act of verifying that you have the ability to connect using native IPv6 is 'future-proofing' your self for an impending revolution. Having said that, there is no real way to know when that 'revolution' to IPv6 will take place,if it ever does completely. The complete cessation of usage of IPv4 addressing schemes is going to be very difficult. It is very likely that IPv4 will never totally go away, but at some point in the future, IPv6 will become the prodominant standard. Anyone that converts their connectivity to IPv6 only right now, is going to have a severely restricted internet experience, but the ability to use both protocols is going to become more and more important.

Just because the number of IPv4 address available has been exhausted, doesn't mean that they should not be used. Right now,it is not imperative that anyone at the consumer level be overly concerned about their IPv6 connectivity. At the same time, they should not take a 'head in the sand' attitude.

Think of it from this perspective...how many subscribers does Comcast have? How many even look at these boards, and how many have responded to this thread indicating that they have IPv6 working. I don't know what percentage of thier client base Comcast have rolled IPv6 connectivity out to, but at the moment,unless they actively check, like the very few here, most people don't know or care if they have IPv6...

The POINT of IPv6 is to alleviate the problem you mentioned, a lack of numerical addresses. That IS what it is good for, and what it was designed to do. Unfortunately, the protocol is still in such a fledgling state that there are issues with throughput. The IPv6 protocol is probably not designed to be faster than IPv4...transmission speeds are ultimately limited by physics, and changing the laws of physics is not the intent of this new protocol.

It is my opinion that there will be IPv4 only websites for a long time to come...while the internet may never have stopped working because of the lack of IPv4 addresses, it would have limited the number of new websites that can be created because of a lack of addresses. That limitation has effectively been lifted, BUTit will benecessary for some companies (especially ones requesting new address blocks in the public space) to be IPv6 only. It is for this reason that the advance rollouts of native IPv6 are occurring.

[dsanbo]

Concord, NH area.....

I'm assuming this is a Cisco-based CMTS......thus, no v6 support yet....?

Thanks!

[dbpaladine]

I was actually looking for a technical IPv4 vs IPv6 comparision of the differences between the two.  I could careless about user experience.  I'm a technical person and work in the technology field for a living.  However, IP protocols is not a strong point of mine.  SO I wanted to get the nuts and bolts of the 2.  I never trust what I read on wikis, since they REALLY are actually written by true authorities of subject mater.

[EG]

All. Just a reminder to please try to keep this thread "on topic" as the original poster had requested, thanks.

[mrgoodall]

Jacksonville FL

SB6120, connected to Apple Airport Extreme (AE) 7.6.1

Enabled IPV6 Native Mode

http://i49.tinypic.com/28ipwgi.jpg

And the results from test-ipv6

http://oi48.tinypic.com/1266a0z.jpg

Soooooo, i guess im not eligible or just configured wrong as all get out?

[Jim721]

Windows 7, Zoom 5341J, Linksys EA-4500 Router. Belleville, Michigan.

[tehjolly81]

@Rugburn - Check out a concept called "Happy Eyeballs" online. It has to do with an application's algorithm for choosing which stack to use in dual-stack hosts, how long to wait before it times out, etc. I've seen issues with horrible performance in IE on dual-stack hosts, but Chrome and Firefox worked fine because they have a working Happy Eyeballs mechanism. This may be what you were running in to with page loads stalling, etc.