XB6 Gateway keeps dropping connection throughout day

[cmnsahm]

Hi,

Got new XB6 gateway a few weeks ago.  Worked fine for a few days then started dropping connection frequently on/off every day.  Did restart and even changed our Wifi channels on gateway.  Called XFinity, transferred to Advanced Repair, they said it was provisioned incorrectly and *promised* it was fixed.  Worked great for 5 days and then poof, yesterday starting dropping intermittantly.  When it drops, the gateway flashes green.  The Event Log shows:

ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 82	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 24	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Thu Apr 2 13:00:57 2020	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001015-DHCPv6 Failed - No Prefix Available	2020/4/02 08:00:57	Critical
ti_dhcp6c[12125]: 72001014-DHCPv6 Failed - No Address Available	2020/4/02 08:00:57	Critical
ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 82	2020/4/02 08:00:57	Critical
ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 24	2020/4/02 08:00:57	Critical
DHCPv4[11828]: 72001001-DHCPv4 Provision - Completed	2020/4/02 08:00:55	Informational
DHCPv4[11922]: 72001020-DHCPv4 - IP Address Released	2020/4/02 07:59:53	Informational
ti_dhcp6c[12229]: 72001011-DHCPv6 - Missing Required Option 82	2020/4/02 07:55:18	Critical
ti_dhcp6c[12229]: 72001011-DHCPv6 - Missing Required Option 24	2020/4/02 07:55:18	Critical
ti_dhcp6c[12229]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Thu Apr 2 12:55:17 2020	2020/4/02 07:55:18	Critical

[EG]

Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

[cmnsahm]

Here you go.  Thanks for checking.  Let me know if you need more.

Downstream	Channel Bonding Value
Index	2	0	1	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	34	35	36	37
Lock Status	Locked	NotLocked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
Frequency	483000000		477000000	489000000	495000000	501000000	507000000	513000000	519000000	525000000	531000000	537000000	543000000	555000000	561000000	567000000	573000000	579000000	585000000	591000000	597000000	603000000	609000000	615000000	621000000	627000000	633000000	639000000	453000000	459000000	465000000	471000000	611600000
SNR	36.609653		37.636276	36.386890	38.605377	37.636276	37.355988	38.605377	38.605377	38.605377	38.983261	38.605377	38.605377	38.605377	37.636276	38.605377	38.605377	38.605377	38.605377	38.983261	38.983261	38.605377	38.605377	38.605377	38.983261	37.636276	38.605377	37.636276	38.605377	38.605377	38.605377	38.605377	NA
Power Level	-0.400002		0.900002	0.500000	2.799999	2.599998	2.700001	3.599998	2.500000	3.900002	2.400002	4.300003	3.099998	3.799999	4.000000	4.699997	4.000000	4.699997	3.599998	4.800003	3.599998	5.300003	4.500000	5.500000	4.800003	4.800003	4.900002	4.300003	5.000000	5.300003	3.500000	4.099998	NA
Modulation	QAM256	UNKNOWN	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	OFDM

Upstream	Channel Bonding Value
Index	1	2	3	4
Lock Status	Locked	Locked	Locked	Locked
Frequency	16600000	23000000	29400000	35800000
Symbol Rate	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec
Power Level	38.770599	39.270599	39.520599	40.520599
Modulation	64QAM	64QAM	64QAM	64QAM
Channel Type	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA

CM Error Codewords
Unerrored Codewords	11354	559030611	11354	11354	11354	11354	11353	11354	11354	11353	11354	11354	11353	11354	11354	11353	11354	11354	11353	11354	11354	11354	11353	11354	11354	11353	11353	11354	11354	11353	11354	11354
Correctable Codewords	0	3735936685	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Uncorrectable Codewords	0	3735936685	0	0	0

[EG]

Well FWIW, the numbers were well within spec at that snapshot in time.

[cmnsahm]

Any ideas what these errors mean?

ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 82	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001011-DHCPv6 - Missing Required Option 24	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Thu Apr 2 13:00:57 2020	2020/4/02 08:00:58	Critical
ti_dhcp6c[12125]: 72001015-DHCPv6 Failed - No Prefix Available	2020/4/02 08:00:57	Critical
ti_dhcp6c[12125]: 72001014-DHCPv6 Failed - No Address Available	2020/4/02 08:00:57	Critical

[PhilBradley]

You're not alone, I'm getting these errors too accompanied by no voice or internet for sometimes over 12 hours at a time. Technicians have been out three times and they're dumbfounded.

[cmnsahm]

Still having issues and chatted with Xfinity support.  I tried to get them to send out a tech to check the lines into the house, but they insist upon going through their Troubleshooting steps first.  Both my husband and son are on Zoom calls this morning and we can't stop work to go through the steps, when I know it is most likely an intermittant signal issue.  Does anyone have any suggestions for getting this resolved and preventing it from coming back?

[cmnsahm]

This issue is still happening.  Same errors (see snippet below).  Does anyone have any suggestions?

72001011-DHCPv6 - Missing Required Option 82	2020/4/19 10:59:52	Critical
ti_dhcp6c[13535]: 72001011-DHCPv6 - Missing Required Option 24

[teekaye]

Did you ever get a response?  Same issue and same error messages here.

[bglasser]

Has anyone gotten a response from Xfinity?  I am having the same issue that my modem can't get an Xfinity side IP address.

IMHO the XB6 modem is a piece of garbage.   I have had some strange behavior with it since I've gotten it.  The only reason I chose this modem was because I wanted to use the new 4K set top boxes that work on IP and there were only 1 or 2 modems that supported those boxes.

Brian