NetDog Premium Member join:2002-03-04 Hollywood, FL |
to dabomb4097
Re: [IPv6] Comcast IPv6 Gives Address But No Default GatewayI am thinking it is not a CPE router issue but a modem issue at this point. I have one other person with the same issue same modem firmware. I have also emailed customers with IPv6 running on both CMTS's and they are not having any issues with IPv6. So let me send some emails and track down people next week to work on this one.
FYI.. the modem is SB6121\SB6120 1.0.6.8, so if anyone else has a SB6121\SB6120 and IPv6 please PM me or post here.. I would like to know if others are having or not having issues with IPv6.
dabomb4097,
Can you manually add the default route? Does the E3200 give you that access? I can get the link local address for you if you can. |
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koitsu MVM join:2002-07-16 Mountain View, CA Humax BGW320-500
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koitsu
MVM
2012-Dec-16 1:20 am
I have a SB6121 and have used IPv6 on my router (RT-N16 running TomatoUSB with appropriate IPv6 fixes) in the past. At the time I was using a SB6120 and it was running 1.0.6.0 or earlier (I forget). Of course, all my IPv6 settings (on the LAN systems) I configured manually (still learning IPv6), but that's not really relevant -- I can check all the settings on the router itself (looking at IPv6 routes, etc.). On the other hand, I'm not in Illinois or off of that CMTS. If my location/setup is sufficient for testing, I'm happy to spend a little time providing analysis/insights if need be. Let me know, NetDog . |
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NetFixerFrom My Cold Dead Hands Premium Member join:2004-06-24 The Boro Netgear CM500 Pace 5268AC TRENDnet TEW-829DRU
2 edits |
to NetDog
said by NetDog:I am thinking it is not a CPE router issue but a modem issue at this point. I have one other person with the same issue same modem firmware. I have also emailed customers with IPv6 running on both CMTS's and they are not having any issues with IPv6. So let me send some emails and track down people next week to work on this one.
FYI.. the modem is SB6121\SB6120 1.0.6.8, so if anyone else has a SB6121\SB6120 and IPv6 please PM me or post here.. I would like to know if others are having or not having issues with IPv6. 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). I also use a Comcast/Netgear WNR1000v2-VC (Firmware Version V1.2.2.56NA) as a guest router, and except for an annoying anomaly where the router's WAN IPv6 address (but not its prefix) and its corresponding PD LAN prefix (but not its local IPv6 address) randomly change every couple of weeks (which is apparently a Comcast/Netgear firmware problem), IPv6 is working for and behind that router which is connected to the same SB6121 cable modem (I have a "c05" modem config file) through Netgear FS105 and ZyXEL GS105S switches. If it helps to visualize my connection, you can see my current network diagram at: » www.dcs-net.net/image/DC ··· gram.gif |
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to NetDog
said by NetDog:Can you manually add the default route? Does the E3200 give you that access? I can get the link local address for you if you can Unfortunately, the router only has provisions to add IPv4 routes, there are no advanced v6 options. 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. Or is the firmware problem just an incompatibility with my particular router, and getting a different router will fix it? |
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NetFixerFrom My Cold Dead Hands Premium Member join:2004-06-24 The Boro Netgear CM500 Pace 5268AC TRENDnet TEW-829DRU
1 recommendation |
NetFixer
Premium Member
2012-Dec-16 2:18 am
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. |
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koitsu MVM join:2002-07-16 Mountain View, CA Humax BGW320-500
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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 and jlivingood 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 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 '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. |
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NetDog Premium Member join:2002-03-04 Hollywood, FL |
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. |
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NetDog |
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.. |
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koitsu MVM join:2002-07-16 Mountain View, CA Humax BGW320-500
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koitsu
MVM
2012-Dec-16 4:54 am
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). |
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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 |
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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. |
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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? |
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NetDog Premium Member join:2002-03-04 Hollywood, FL |
NetDog
Premium Member
2012-Dec-16 9:08 pm
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.. |
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NetDog
1 recommendation |
to koitsu
I have been told people got Tomato working with DHCPv6-PD support.. Have you tried it lately? Latest code that is.. |
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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? |
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NetDog Premium Member join:2002-03-04 Hollywood, FL |
NetDog
Premium Member
2012-Dec-17 12:02 pm
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. |
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koitsu MVM join:2002-07-16 Mountain View, CA Humax BGW320-500
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to NetDog
said by NetDog: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. |
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NetDog Premium Member join:2002-03-04 Hollywood, FL 1 edit |
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. 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. |
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to NetDog
This is definitely troubling. |
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NetFixerFrom My Cold Dead Hands Premium Member join:2004-06-24 The Boro Netgear CM500 Pace 5268AC TRENDnet TEW-829DRU
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NetFixer
Premium Member
2012-Dec-18 12:36 am
said by Mike Wolf:This is definitely troubling. And even more so for those who are actually experiencing this anomaly. |
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whfsdude Premium Member join:2003-04-05 Washington, DC
4 recommendations |
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. |
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NetFixerFrom My Cold Dead Hands Premium Member join:2004-06-24 The Boro Netgear CM500 Pace 5268AC TRENDnet TEW-829DRU
1 edit
3 recommendations |
NetFixer
Premium Member
2012-Dec-18 1:22 am
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.
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to whfsdude
Very true. |
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