Symptom - Cannot reach URL - DHCPv6 Missing Option 24 and Option 82 Persistent Cable Model Event Error Logs

Hi, @CableCo10. Are you noticing this issue when not connecting to a VPN? When just connecting standard on your device. Are you noticing this issue on all devices or certain ones? Have you completed any troubleshooting steps so far? 

Hello, Christina,

Yes, I am experiencing this when not on VPN.  I will release VPN, operate for a couple of hours and then produce event logs again.  Also, I was using Mozilla VPN but Switched to Norton VPN and this was happening with/without VPN.

I have not yet correlated this to a device but I have 17 devices, generally 5 always connected via Ethernet 8-10 inclusive of the Ethernet, are active when household is home.  From my home laptop I do notice the issue a couple of times a week.  The 24 - 30 hours, I started researching afternoon 3/10/21 to 3/11/21 were especially hard when I was on my PC(Win10 using Mozilla, with Outlook client on machine.  It seemed like nothing resolved and no site was ping-able for 10 minute periods.  I do not do much web browsing from my Comcast imaged Samsung 10+.

As for the Xfinity helper tools, yes all of the troubleshooting has been attempted with confirming upgrades to all applications (TV, STB, PC Apps etc...), Power Cycling the Cable Modem, operating the Windows troubleshooters.  Note that power cycling the Cable Modem bring brief relief.  Operating Windows troubleshooter to point of fix problem also bring brief relief.  I believe this is just a function of resetting the TCP/IP Sockets and Ports, once they get twisted.  I also note that if I leave and come-back for any period (2 min or maybe 3 hours) essentially the problem is no-longer there.  They only thing I have to go on are the two Missing Options captured in the event logs, which are both network side, not client side.

More Logs with Use Case: Laptop on with normal configuration (outlook installed client open, Norton VPN on for about 30 minutes) I open calendar, select 1st MS Teams meeting of day which is on the email attached to work exchange server (other 5 email accounts are imap to 3 different domains).  Launch was a struggle and email folder updates started struggling.  Open Firefox and no routing to anywhere, including cable modem admin (internal) ping to cable modem works but not to external sites.  I closed all apps, rebooted laptop, open outlook (VPN is auto-on, same with VPN client on Cellphone) same issues.  Outlook had to be restarted 3x to get functional, launched Full network virus scan and turned off VPN.  Able to reach cable modem admin account after another 15 minutes.  Below are event and firewall logs.  If I read event logs correct drops are at cable modem from my laptop client because the time stamps match up.  While writing this, with VPN off, Browser sites and attempt to ping sites became unavailable, although lost connection to cable modem but it remained pingable.  Note, last Thursday is when I last rebooted the cable modem.

DHCPv6[12529]: 72001011-DHCPv6 - Missing Required Option 82 
 2022/3/16 20:25:23 Critical 

DHCPv6[12529]: 72001011-DHCPv6 - Missing Required Option 24 
 2022/3/16 20:25:23 Critical

FW.IPv6 INPUT drop , 1474  Attempts, 2022/3/17 07:01:54 Firewall Blocked 

FW.IPv6 FORWARD drop , 82  Attempts, 2022/3/17 06:59:44 Firewall Blocked 

FW.IPv6 FORWARD drop , 70  Attempts, 2022/3/17 06:58:00 Firewall Blocked 

FW.IPv6 INPUT drop , 525  Attempts, 2022/3/17 06:58:00 Firewall Blocked 

FW.IPv6 FORWARD drop , 80  Attempts, 2022/3/16 14:46:48 Firewall Blocked 

FW.IPv6 INPUT drop , 2582  Attempts, 2022/3/16 14:46:48 Firewall Blocked 

FW.WANATTACK DROP , 22  Attempts, 2022/3/16 02:05:06 Firewall Blocked 

FW.LAN2SELF DROP , 14  Attempts, 2022/3/16 02:05:06 Firewall Blocked

Can confirm this as well and seems there is nothing online but these forums regarding this error.  I just upgraded to xFI this month and the 900 MB packange and just pulled the logs for the same thing.  WHY are you asking him to ccontact you directly.. why not post what this error is.

i upgraded on 4-11 and I have 157 entries in my trouble shooting log.. all reporting this critical error.  Have a tech coming out tomorrow but have a feeling this is an internal issue with either the modem or your internal configs that are sent out from you XFINITY.

4/13 example.

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 82 
 2022/4/13 14:06:31 Critical 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 82 
 2022/4/13 14:06:31 Critical 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 24 
 2022/4/13 14:06:31 Critical 

DHCPv6[1326]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times 
 2022/4/13 14:06:31 Critical 

[Wifi][3144]:  WiFi radio Radio1 is set to UP 
 2022/4/13 13:49:09 Notice 

[Wifi][3144]:  WiFi radio Radio1 is set to UP 
 2022/4/13 13:47:49 Notice 

[Wifi][3144]:  Wifi security mode WPA2_Enterprise is Enabled 
 2022/4/13 13:47:34 Notice 

[Wifi][3144]:  Wifi security mode WPA2_Enterprise is Enabled 
 2022/4/13 13:47:33 Notice 

[Harvester][3144]:  Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting 
 2022/4/13 13:47:13 Notice 

[Harvester][3144]:  Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting 
 2022/4/13 13:47:13 Notice 

DHCPv6[1326]: 72001002-DHCPv6 Provision - Completed 
 2022/4/13 13:36:52 Informational 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 82 
 2022/4/13 13:36:50 Critical 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 82 
 2022/4/13 13:36:50 Critical 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 24 
 2022/4/13 13:36:50 Critical 

DHCPv6[1326]: 72001011-DHCPv6 - Missing Required Option 24 
 2022/4/13 13:36:50 Critical 

DHCPv6[1326]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:36:47 2022 
 2022/4/13 13:36:50 Critical 

DHCPv6[1326]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Wed Apr 13 19:36:50 2022 
 2022/4/13 13:36:50 Critical 

DHCPv4[655]: 72001001-DHCPv4 Provision - Completed 
 2022/4/13 13:36:47 Informational 

DHCPv6[1326]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:36:46 2022 
 2022/4/13 13:36:47 Critical 

eRouterEvents[594]: 72003004-eRouter enabled as Dual Stack 
 2022/4/13 13:36:40 Informational 

eRouterEvents[26458]: 72003001-eRouter is administratively disabled 
 2022/4/13 13:34:57 Informational 

eRouterEvents[26458]: 72003004-eRouter enabled as Dual Stack 
 2022/4/13 13:34:56 Informational 

DHCPv4[15367]: 72001020-DHCPv4 - IP Address Released 
 2022/4/13 13:34:56 Informational 

[Wifi][3144]:  WiFi radio Radio1 is set to UP 
 2022/4/13 13:34:38 Notice 

[Wifi][3144]:  WiFi radio Radio0 is set to UP 
 2022/4/13 13:33:56 Notice 

[Wifi][3144]:  KeyPassphrase changed 
 2022/4/13 13:33:56 Notice 

[Wifi][3144]:  KeyPassphrase changed 
 2022/4/13 13:33:55 Notice 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 7 Retries Attempted with Last attempt at Wed Apr 13 19:32:47 2022 
 2022/4/13 13:33:47 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 6 Retries Attempted with Last attempt at Wed Apr 13 19:32:17 2022 
 2022/4/13 13:32:47 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 5 Retries Attempted with Last attempt at Wed Apr 13 19:32:03 2022 
 2022/4/13 13:32:17 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 4 Retries Attempted with Last attempt at Wed Apr 13 19:31:55 2022 
 2022/4/13 13:32:03 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 3 Retries Attempted with Last attempt at Wed Apr 13 19:31:51 2022 
 2022/4/13 13:31:55 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:31:49 2022 
 2022/4/13 13:31:51 Critical 

DHCPv6[19627]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:31:48 2022 
 2022/4/13 13:31:49 Critical 

DHCPv6[19152]: 72001004-DHCPv6 Provision - 4 Retries Attempted with Last attempt at Wed Apr 13 19:31:36 2022 
 2022/4/13 13:31:44 Critical 

DHCPv6[19152]: 72001004-DHCPv6 Provision - 3 Retries Attempted with Last attempt at Wed Apr 13 19:31:31 2022 
 2022/4/13 13:31:36 Critical 

DHCPv6[19152]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:31:29 2022 
 2022/4/13 13:31:31 Critical 

DHCPv6[19152]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:31:28 2022 
 2022/4/13 13:31:29 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 8 Retries Attempted with Last attempt at Wed Apr 13 19:28:11 2022 
 2022/4/13 13:30:22 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 7 Retries Attempted with Last attempt at Wed Apr 13 19:27:05 2022 
 2022/4/13 13:28:11 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 6 Retries Attempted with Last attempt at Wed Apr 13 19:26:34 2022 
 2022/4/13 13:27:05 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 5 Retries Attempted with Last attempt at Wed Apr 13 19:26:19 2022 
 2022/4/13 13:26:34 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 4 Retries Attempted with Last attempt at Wed Apr 13 19:26:11 2022 
 2022/4/13 13:26:19 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 3 Retries Attempted with Last attempt at Wed Apr 13 19:26:07 2022 
 2022/4/13 13:26:11 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:26:05 2022 
 2022/4/13 13:26:07 Critical 

DHCPv6[23893]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:26:04 2022 
 2022/4/13 13:26:05 Critical 

DHCPv6[23376]: 72001004-DHCPv6 Provision - 4 Retries Attempted with Last attempt at Wed Apr 13 19:25:52 2022 
 2022/4/13 13:26:01 Critical 

DHCPv6[23376]: 72001004-DHCPv6 Provision - 3 Retries Attempted with Last attempt at Wed Apr 13 19:25:48 2022 
 2022/4/13 13:25:52 Critical 

DHCPv6[23376]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:25:46 2022 
 2022/4/13 13:25:48 Critical 

DHCPv6[23376]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:25:44 2022 
 2022/4/13 13:25:46 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 7 Retries Attempted with Last attempt at Wed Apr 13 19:24:10 2022 
 2022/4/13 13:25:16 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 6 Retries Attempted with Last attempt at Wed Apr 13 19:23:38 2022 
 2022/4/13 13:24:10 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 5 Retries Attempted with Last attempt at Wed Apr 13 19:23:21 2022 
 2022/4/13 13:23:38 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 4 Retries Attempted with Last attempt at Wed Apr 13 19:23:13 2022 
 2022/4/13 13:23:21 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 3 Retries Attempted with Last attempt at Wed Apr 13 19:23:08 2022 
 2022/4/13 13:23:13 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 2 Retries Attempted with Last attempt at Wed Apr 13 19:23:06 2022 
 2022/4/13 13:23:08 Critical 

DHCPv6[17024]: 72001004-DHCPv6 Provision - 1 Retries Attempted with Last attempt at Wed Apr 13 19:23:05 2022 
 2022/4/13 13:23:06 Critical 

DHCPv4[15367]: 72001001-DHCPv4 Provision - Completed 
 2022/4/13 13:23:00 Informational 

DHCPv4[15367]: 72001008-DHCPv4 - No Offer or Ack Received 1 times 
 2022/4/13 13:22:56 Critical 

eRouterEvents[15332]: 72003004-eRouter enabled as Dual Stack 
 2022/4/13 13:22:48 Informational 

Dear xfinity, So any follow up?    I am having the same issue.    Who watches over you. Xfinity?   

On top of these same issues.   They are without a doubt falsifying records of how much data is used on my account, lying cheating  and stealing      Several months in a row ive measured by use of several other speed /data usage apps.  That have inflated the amount of data i use .. I look at what they say I use. ..its never the same. And xfinity is always extremely higher about of data..    This is gonna be a huge issue when they start putting limits on data plans. They are working to roll that over into yet another crazy charge  to us. Be watching now.       They constantly stall, pass it on to the next department.  Comcast / xfinity is clearly not transparent .    They are fully aware. That one account owner can only put so much time into troubleshooting the guaranteed problem.   Thats what guarantee they have with you.   To waste your time overcharge, stall, pass you on,.   

Here they clearly could have let this thread continue and allow other users of their service the courtesy of being able to follow to the given solution to the problem.      Why can't you company be one of transparency and be all they say.  Cause you don't value the customer and their time.   You value lining you pockets.   And making false statements.flat out lying to customers.   And what is the number one value or tactic for employee of the  month.     Who can waste the most of customer time and draw out or how many complains go unresolved without a call back in from customer.  Or.set an appointment have someone come out to your home.so.we can charge you for thwt too.   People don't have time to waste on the phone wth your company.     I dont know why  I wqsted my previous time. Again... .   Awe I remember you overcharge exploit and have personally wasted more of my time.    You [EDIT] me off!   I dont love what you represent.   Your company [EDIT]!    This lady put some time in, I wanna know if her issues got resolved. And how.   You can certainly.do that.  Without being anything personally identifying.       The steps to the solution..    You know sooner or later. Their are gonna be those regulations that will limit the airwaves charges, I hope. .  Or perhaps not. You know who they say is the prince of the air. Satan. He for sure shows himself thru these airwaves you and the marketplace are exploiting to lie steal kill and destroy.    I dont love you xfinity...   

I have the same critical System Error logs on my newly installed xFi TG4482A gateway (tech came to my home, checked all internal cabling, signal levels, splitters and replaced the xFi gateway which did not correct the issue and I still have frequent sporadic drop outs (usually 2 time per day at random times of day or night ...my WD Raid box sends me an email whenever the internet connection is restored).

• Power cycling the xFi doesn't help.
• Errors occur even though I disabled the guest WiFi and hid the internal WiFi so no one connects to it.
• Errors occur even though no cable is connected to the xFi ethernet ports.
• Therefore the errors are between the xFi unit and the equipment located somewhere in our neighborhood or at the head end. Its not the CPE.

BTW, none of this happened with the previous Technicolor CGM4140COM modem which worked fine but was slower than this new modem.

Shown below is  sample of the errors. There are thousands of them since the xFi was installed. They repeat with regularity every 15 to 45 minute day or night. I would hope that with regularity like this, a competent level-2 tech could connect the dots and find out why. I've read blogs by folks working on Cisco routers who describe how to solve this problem, but without knowing what gear Xfinity has at their head end, I'm not sure whether the advice provided would be applicable in this case.

Given that many Xfinity customers have had this issue for quite some time, someone at Xfinity should have sorted it out by now. 

Has anyone resolved this?

Seeing these in Portland, OR too.  But can't say I'm lacking anything for ipv4 networks.  And my previous testing of ipv6 didn't make me think it was worth anything (failed an internet testing website's checks).

Yes, we see random drop outs in our connection too.  I've personally seen it drop out, then a minute or two later work again, around 4am a couple times now.  Being so close to a specific time made me remember the times it happened.  Xfinity router was last rebooted manually a week ago.  Doesn't seem to fix anything when I do it.  Though I know it's a typical workaround to buggy devices.

If anybody else runs across this with same issues:

I have had slow internet all day, sites work but take an age to start loading, handshakes taking forever, etc. If I try a simple e.g. ping google, the first few packets take ~3400ms, then the last will be a more normal number.

I was seeing same issue on work Mac computer on and off VPN, personal Mac, and also personal Windows PC, wired and wireless, no common threads of usual culprits.

I see the same kind of logs as in this post - Option 82 and Option 24 missing in DHCPv6 (googling that is what lead me to this thread).

I called in to support and they didn't see anything wrong, tried all troubleshooting.

I logged into my gateway via web interface (10.0.0.1) and under Gateway -> Connection -> Local IP Network, in IPv6 section, the 'Stateless' checkbox was checked and grayed out / cannot be unchecked, but the 'Stateful' checkbox was also checked and able to be toggled. I unchecked the 'Stateful' option and saved settings. BOOM, everything seems to be working fine now!

Not sure if both settings seemingly being checked at the same time was causing a problem, or if it was just trying to persist bad settings and disabling that let them clear, or what, but yeah. Seems to have cleared it up for me. Hope this helps somebody else!

Experiencing same in Fremont, CA. Has been rather consistent problem all along. It appears they've a broken or incomplete implementation of RFC 3046, DHCP Relay Agent Information Option

https://www.rfc-editor.org/rfc/rfc3046.txt

Is anyone else seeing the peer-to-peer chat icon after signing in?  I missed the request but with the recent post I see xfinity team repeatedly asking me to send peer-to-peer chat, so I signed in and looked around the page and just do not see it, even after using the link alternative option.