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NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

1 recommendation

reply to dabomb4097

Re: [IPv6] Comcast IPv6 Gives Address But No Default Gateway

said by dabomb4097:

So, here's the next fun question...if it is a cable modem firmware problem, how can I correct that? I have a customer-owned modem, and I'm reading conflicting reports on whether or not Comcast will push firmware updates to them. If Comcast will not push a firmware update to a customer-owned modem, is there a way I can update it from my end? If I will be stuck with this non-working firmware forever please let me know, I'm still in the 30-day return window where I can exchange this modem for a different brand/model that will work if need be.

Comcast definitely pushes updated firmware to customer owned modems. I also have my own SB6121 (with the same 1.0.6.8 firmware as you have) that I installed in September, and I have already had two firmware updates pushed to it.
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.


koitsu
Premium,MVM
join:2002-07-16
Mountain View, CA
kudos:23
reply to dabomb4097
If it's a cable modem firmware issue, Comcast is the one who will push the firmware update to you. You have absolutely no control over this. Folks like SteveTeow See Profile and jlivingood See Profile will need to get involved. Be aware there is a very large amount of politics/procedures with regards to Comcast's relationship with the modem manufacturer to get firmware updates (the same applies to Motorola, UBee, Zoom, and any other brands that work with Comcast).

But like two of us have already said -- the SB6120 and SB6121 are not blocking these kinds of packets. I live in Silicon Valley and I do not have the issue you report, and NetFixer See Profile lives in Tennessee and does not have the issue you report. I think focusing on "modem firmware problem" is barking up the wrong tree. We don't have hard evidence at this point that that's the root cause.

I'm waiting on NetDog See Profile's response to me WRT if he needs me to test IPv6. My router (Linux-based) has tcpdump and I am a senior UNIX SA + NA, so I have no problem proving the existence of ICMPv6 RAs and prefix delegation if need be.
--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80
reply to dabomb4097
said by dabomb4097:

So, here's the next fun question...if it is a cable modem firmware problem, how can I correct that?

Comcast will push the firmware to you on approved cable modems, and yes the SB6120\SB6121 is approved.
said by dabomb4097:

Or is the firmware problem just an incompatibility with my particular router, and getting a different router will fix it?

I am going to try and recreate the issue on Monday so standby, if I can recreate the issue then we can go from there.


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80
reply to NetFixer
said by NetFixer:

I am using an SB6121:
Firmware Name: SB_KOMODO-1.0.6.8-SCM01-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 5.0

I connect to a Cadant CMTS: (CMTS-MAC=00:01:5c:3c:f4:48) located in Murfreesboro, TN.

I have no problems with Comcast's native dual stack using a D-Link DIR655 (Hardware Version: B1 Firmware Version: 2.10NA).

This is great thanks for the info, this will be me a place to start..


koitsu
Premium,MVM
join:2002-07-16
Mountain View, CA
kudos:23
As for my setup, so that you can use it as a datapoint as well:

Model Name: SB6121
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.8-SCM01-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 5.0

I connect to CMTS-MAC=00:01:5c:32:6e:44, which is also a Cadent unit. I've been trying for months to get a concise geographic location of where the head-end is, but I'm connecting out of Mountain View, CA.

Router model is an Asus RT-N16, presently running TomatoUSB Toastman firmware tomato-K26USB-1.28.0500.5MIPSR2Toastman-RT-N-Ext.trx with IPv6 disabled (and if you need me to enable + test it let me know -- I have done so in the past with 100% success, but with these firmware/router adjustments needing to be applied to make things work).
--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
reply to NetDog
The SB6121 connected to the Cadant I'm on is running the 1.0.6.8 firmware and the IPv6 is working just fine with my various Linksys routers. CMTS mac address is 00:01:5c:24:1d:ce
Currently on a Linksys EA4500 running 2.0.37 build 131047 2012-03-22 04:24

dabomb4097

join:2012-12-13
Willowbrook, IL
reply to NetDog
Thanks!

My router is an Cisco/Linksys E3200 Hardware 1.0 with firmware 1.0.04 build 1 Apr 10, 2012.

And I'm not sure if its a coincidence or not, but I woke up this morning and found both my TV and HSI completely out. There appears to be no signal, TV or Internet, on the line coming into my house at all.


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
Maybe something outside (or somewhere on Comcast's end) was failing and causing the IPv6 to not pass through, and when it completely failed it resulted in complete loss of service. Are your neighbors affected too?


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80
said by Mike Wolf:

Maybe something outside (or somewhere on Comcast's end) was failing and causing the IPv6 to not pass through, and when it completely failed it resulted in complete loss of service. Are your neighbors affected too?

Mike,

I have checked with other customers that this users CMTS and they are working fine. So it is only this user and one other user on a totally different CMTS. From what I can see so far they are not receiving the RA's from the CMTS. Very odd..


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80

1 recommendation

reply to koitsu
said by koitsu:

Router model is an Asus RT-N16, presently running TomatoUSB Toastman firmware tomato-K26USB-1.28.0500.5MIPSR2Toastman-RT-N-Ext.trx with IPv6 disabled (and if you need me to enable + test it let me know -- I have done so in the past with 100% success, but with these firmware/router adjustments needing to be applied to make things work).

I have been told people got Tomato working with DHCPv6-PD support.. Have you tried it lately? Latest code that is..


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
reply to NetDog
Are both customers using the same or similar family router like from the 2011 E series or 2012 EA series routers?

However, I really don't think it's the router because with how popular these two series are, there would be more customers affected and I haven't heard seen anything similar to this yet. Could it be possible that the modem wasn't provisioned correctly on the account?


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80
said by Mike Wolf:

Are both customers using the same or similar family router like from the 2011 E series or 2012 EA series routers?

However, I really don't think it's the router because with how popular these two series are, there would be more customers affected and I haven't heard seen anything similar to this yet. Could it be possible that the modem wasn't provisioned correctly on the account?

The issue must be modem related, bootfile or something.. One user has a SB6120 the other SB6121. One user has a ASUS RT-N66U (I know for a fact this works) and the other has a Cisco E3200. One tested directly with a Windows 7 PC without seeing the RA's.

Not the same CMTS, not even close..

Both are not seeing the RA's coming from the CMTS, but other customers on the same CMTS's are working.


koitsu
Premium,MVM
join:2002-07-16
Mountain View, CA
kudos:23
reply to NetDog
said by NetDog:

said by koitsu:

Router model is an Asus RT-N16, presently running TomatoUSB Toastman firmware tomato-K26USB-1.28.0500.5MIPSR2Toastman-RT-N-Ext.trx with IPv6 disabled (and if you need me to enable + test it let me know -- I have done so in the past with 100% success, but with these firmware/router adjustments needing to be applied to make things work).

I have been told people got Tomato working with DHCPv6-PD support.. Have you tried it lately? Latest code that is..

The workarounds in the 3rd link are still needed today (at least with TomatoUSB Toastman builds). The reason is that there are conflicting situations (ISPs mainly); for example the workaround is correct for Comcast here in the states, but causes breakage when used with some ISPs in Australia. So it's not something that Toastman, at this point, feels comfortable committing.
--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80

1 edit
reply to NetFixer

said by NetFixer See Profile
I am using an SB6121:
Firmware Name: SB_KOMODO-1.0.6.8-SCM01-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 5.0

I connect to a Cadant CMTS: (CMTS-MAC=00:01:5c:3c:f4:48) located in Murfreesboro, TN.

NetFixer,

Can you PM me your CM MAC please or if you know the bootfile you have on your device please. I would like to change "dabomb4097" device to the same bootfile and see if that is the issue.


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
reply to NetDog
This is definitely troubling.


NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage
said by Mike Wolf:

This is definitely troubling.

         
And even more so for those who are actually experiencing this anomaly.
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.


whfsdude
Premium
join:2003-04-05
Washington, DC
Reviews:
·Comcast

4 recommendations

reply to Mike Wolf
said by Mike Wolf:

This is definitely troubling.

I don't mean to hijack the thread but this has to be said.

I'd say this is all really awesome and positive for the Internet community. You have an ISP aggressively deploying IPv6 and pushing the CPE vendors.

Active community engagement and open dialog with power users to hammer out the bugs.

If every ISP acted like this, we wouldn't be sitting at 2% adoption in North America.


NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

1 edit

3 recommendations

said by whfsdude:

said by Mike Wolf:

This is definitely troubling.

I don't mean to hijack the thread but this has to be said.

I'd say this is all really awesome and positive for the Internet community. You have an ISP aggressively deploying IPv6 and pushing the CPE vendors.

Active community engagement and open dialog with power users to hammer out the bugs.

If every ISP acted like this, we wouldn't be sitting at 2% adoption in North America.

   

Can anyone imagine AT&T working one on one with individual residential or small business customers to get IPv6 working? Can anyone image AT&T even getting native IPv6 working for anyone other than a few select enterprise level customers?

There is a reason why I use 10 year old routers that have a snowball's chance in hell of ever being upgraded to support IPv6 to connect to my backup AT&T connection. Although, the Mayan Calendar that the TRENDnet router uses may force me to replace it after the upcoming Winter Solstice.



--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4

1 recommendation

reply to whfsdude
Very true.


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80

1 recommendation

reply to dabomb4097
Issue found, I am working on getting the fix in a change window. Standby, and no it wasn't the cable modem


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
So what was the issue?


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80

1 recommendation

said by Mike Wolf:

So what was the issue?

A setting on the cable mac needed to be reset. So that is why it only affected a single cable mac domain, or why one customer would work but the other would not.

dabomb4097

join:2012-12-13
Willowbrook, IL
said by NetDog:

A setting on the cable mac needed to be reset. So that is why it only affected a single cable mac domain, or why one customer would work but the other would not.

Whatever NetDog did seems to have fixed the problem on my end.

Thanks again!


NetDog
Premium,VIP
join:2002-03-04
Parker, CO
kudos:80
said by dabomb4097:

said by NetDog:

A setting on the cable mac needed to be reset. So that is why it only affected a single cable mac domain, or why one customer would work but the other would not.

Whatever NetDog did seems to have fixed the problem on my end.

Thanks again!

Cool I am glad we got it..


Mike Wolf

join:2009-05-24
Beachwood, NJ
kudos:4
reply to NetDog
yay! glad to hear it wasn't a customer equipment issue