 MoracCat god
join:2001-08-30
Riverside, NJ
kudos:1
 ·Comcast
1 edit | [IPv6] Does modem need to support IPv6 to get IPv6? I have a Linksys E3000 which is running TomatoUSB. There's an option in that to enable "DHCPv6 with Prefix Delegation" with a prefix length of 64. There's also an option to enable router advertisements and accept them from the WAN or LAN (is Comcast using these?). (see »www.linksysinfo.org/index.php?th···t.38006/).
Anyway, I tried doing that, but the router didn't report that it got an IPv6 ip address (edit: I checked and apparently it just assigned itself a private ip address). I could nslookup other IPv6 addresses so DNS was working. I also tried pinging (ping and ping6) ipv6.google.com and while it looks like it was sending pings out to Google's IPv6 address, there was no response to any of the ping packets sent.
I have a ZoomTelephonics 5341 which does not have a check box next to the IPv6 column on Comcast's device page. My modem reports that it is not getting an IPV6 address either.
Does that mean IPv6 won't work, even though my router should support it?
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| Your modem must support IPv6 to obtain the IP.
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MoracCat god
join:2001-08-30
Riverside, NJ
kudos:1 Reviews:
·Comcast
| said by ExoticFish:Your modem must support IPv6 to obtain the IP.
The IP on the router or on the modem?
By the way, my modem does support IPv6 as there is an area that says there is no IPv6 ip address on the modem's web page, it's just not listed as such on Comcast's device page.
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| Are you sure IPv6 is available in your area ?
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MoracCat god
join:2001-08-30
Riverside, NJ
kudos:1 Reviews:
·Comcast
| said by ExoticFish:Are you sure IPv6 is available in your area ?
I'm not 100% sure, but Comcast supposedly enabled it in the Philly/NJ area, which is where I am.
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netcoolPremium
join:2008-11-05
Englewood, CO
kudos:11
3 edits | reply to ExoticFish
said by ExoticFish:Your modem must support IPv6 to obtain the IP.
I'd like to clarify that a bit, the modem does not need to have an IPV6 management address for your computer/router to obtain an IPV6 address.
Of course IPV6 must still be enabled in your area for you to actually pull an IPV6 address/prefix. Basing the availability of V6 off the modem management page is not a surefire approach.
But I just wanted to point that out because a lot of people are looking at their modem stats and thinking that because they don't see IPV6 enabled there that it must mean IPV6 is not enabled in their area. |
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 TibbyWinbetaPremium
join:2002-06-01
Oswego, IL | reply to Morac
My modem sais IPv4.
My router pulled an IPv6 address and a /64 block for my network. Works as expected.
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VP - WinBeta |
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DaemonPremium
join:2003-06-29
San Francisco, CA Reviews:
 ·webpass.net
 ·AT&T U-Verse
·Comcast
| reply to Morac
said by Morac:it's just not listed as such on Comcast's device page.
This means that Comcast has either found bugs in the IPv6 implementation your modem uses and is waiting for a firmware update, or has not yet tested it for certification. Without the certification, the CMTS will not IPv6ify (technical term) your line.
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-Ryan
I use Linux, OS X, iOS and Windows. Let the OS wars die. |
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 NetDogPremium,VIP
join:2002-03-04
Parker, CO
kudos:4
·Comcast
| reply to Morac
said by Morac:said by ExoticFish:Are you sure IPv6 is available in your area ?
I'm not 100% sure, but Comcast supposedly enabled it in the Philly/NJ area, which is where I am. If you PM me your cable modem mac more then happy to check. |
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| reply to Morac
I doubt very much I have it enabled here.
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 plencnerbPremium
join:2000-09-25
Elgin, IL
kudos:2 | reply to Morac
I have been following all the info about IPV6, and as far as I can tell, there are a lot of "parts" that need to be in place for a given user to get this to work.
First, and I think most important, is that Comcast has to have enabled IPV6 at the CMTS. From what I can tell, this is something that NetDog  can verify if you PM them the MAC address of the of your Cable Modem.
Next, is it true that your cable modem must support taking an IPV6 IP from Comcast's DHCP servers? I would think if you had an old cable modem, it won't know what an IPV6 IP is, thus not being able to "acquire" one from Comcast. Even if comcast was sending one, and your router was able to get it, if the cable modem does not support it, I would think you would be out of luck.
Then, one must have a router that supports IPV6. I take this to mean that 1) Your router will have no problems pulling a IPV6 IP from Comcast via your cable modem, assuming the CMTS is sending one, and your cable modem supports it and 2) Your router will be able to assign IPV6 IP's to your internal network (just like a current IPV4 DHCP server does now)
Finally, you have to have an OS that will get an IPV6 IP from your router.
On a very high level, has what I said above correct? I know there are a lot of technical details for it to work exactly correct. But, in a perfect world on a high level, am I correct?
If so, I would like to verify if my area is ready for IPV6. From there, I can look at the next item (my cable modem), and verify that is ready to go. Then, I'll move onto my router, and finally, the devices on my network.
Thanks in advance,
--Brian
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--Brian Plencner
E-Mail: CoasterBrian72Cancer@gmail.com
Note: Kill Cancer to Reply via e-mail |
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NetDogPremium,VIP
join:2002-03-04
Parker, CO
kudos:4 Reviews:
·Comcast
| said by plencnerb:On a very high level, has what I said above correct? I know there are a lot of technical details for it to work exactly correct. But, in a perfect world on a high level, am I correct?
--Brian
Yes on a High-level you are correct. Alot of moving parts here that need to work together.. |
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plencnerbPremium
join:2000-09-25
Elgin, IL
kudos:2 | NetDog,
Thanks for the quick reply. I have sent you a PM of the MAC address of my Cable Modem so you can check on that.
--Brian |
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| reply to plencnerb
What you've said is correct. That's basically how it goes.
You could PM the NetDog there and see about your "area" having IPv6 support. After that you can see if your modem/router/devices support IPv6 in that order  |
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rw123Premium
join:2004-01-16
Indianapolis, IN | reply to Morac
Morac, I could not get my e3000 using current tomatoe usb (toastman) to pull the ipv6 but could directly from the modem. Must have been missing something but could not find it.
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Running Arris TM722G |
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NetDogPremium,VIP
join:2002-03-04
Parker, CO
kudos:4 Reviews:
·Comcast
| reply to plencnerb
said by plencnerb:Next, is it true that your cable modem must support taking an IPV6 IP from Comcast's DHCP servers? I would think if you had an old cable modem, it won't know what an IPV6 IP is, thus not being able to "acquire" one from Comcast. Even if comcast was sending one, and your router was able to get it, if the cable modem does not support it, I would think you would be out of luck.
--Brian
I was asked to correct this one part. The CM does not necessarily have to support IPV6 addressing itself for your computer/router to get an IPV6 address. |
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MoracCat god
join:2001-08-30
Riverside, NJ
kudos:1 | reply to rw123
That's what I'm running (toastman). Maybe there's a compatibility issue? |
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rw123Premium
join:2004-01-16
Indianapolis, IN Reviews:
·Comcast
| While on the surface it would seem to not be a problem, obviously I could not get toastman to pull an ipv6 with what seems to be the same settings as my new dlink 827 which works fine. I am betting something is just not set up right, but it will take a better person than me to figure it out. 
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Running Arris TM722G |
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MoracCat god
join:2001-08-30
Riverside, NJ
kudos:1 Reviews:
·Comcast
| said by rw123:While on the surface it would seem to not be a problem, obviously I could not get toastman to pull an ipv6 with what seems to be the same settings as my new dlink 827 which works fine. I am betting something is just not set up right, but it will take a better person than me to figure it out.
Turns out IPV6 isn't enabled for me yet according to NetDog.
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rw123Premium
join:2004-01-16
Indianapolis, IN Reviews:
·Comcast
| Well that is the weird part for me since I can pull directly from the modem, from the dlink-827, but not from the e3000 (with tomato USB toastman)
The other thing of course for you to try is to connect directly at the modem and see if you can pull an ipv6 address sometime. Hope you get it soon!
r
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Running Arris TM722G |
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