Internet Frequently Dropping

@user_0ef58c​ interesting, I have more timeouts for xfinity.com than I do comcast.net, 1.1.1.1, and 1.0.0.1

@Mr.B​ notice that abnormally high latency for such an early hop to a 10.61.x.x device? I'm having that same thing, also with intermittent drops. 

The first hop is your router. The 2nd hop should not be a layer 3 device, which 10.61.x.x is. Xfinity refuses to tell me what this hop is and how it might relate to our problem.

I'm sure @EG is sick of me tagging them but there seems to be a strong correlation between this NATTing the WAN / proxy initiative and intermittent connection drops. For some people it's modem or corroded lines etc, but for those of us where it happened after recent work, or started suddenly , there is a strong correlation.

I urge the Digital Care Team to escalate this to someone who can tell us why we are having an extra Layer 3 hop, why the latency is higher than a 2nd hop should be, and if it relates to our connectivity issues.

Anyway, thanks for posting. Further evidence for my naive hypothesis heh. Good luck. If you find a solution please post here. 

@Mr.B​ Are you using another router with your gateway? 10.0.0.0/8 IPs are reserved for LAN use. I would bridge the gateway and just use your router if that's the case. Otherwise, is Xfinity suddenly running some weird form of CGNAT in some areas? (If this was the case, CGNAT IPs should be in the 100.64.0.0 to 100.127.255.255 range)

@Hemingray42​ it is not because of an extra router. There are many of us in this same boat. A local maintenance guy admitted to me it's something Xfinity is doing but wouldn't tell me what it was

@EG​ Very odd, is Xfinity starting to do CGNAT on IPv4 addresses? I'm not seeing that on my end fortunately. Hopefully not going to be a thing as I don't use IPv6 at all for anything.

@Hemingray42​ I'm super naive to this stuff, but if I were to figure out how to set ipv6 as my preference, could that maybe help my issue by working around the cg-nat? Sorry for what is probly a silly question, but I'll do anything at this point. (And I currently have ipv6 disabled because I could never figure out the settings for it heh)

I will mention, I run PFSense as my router and disabled the IPV6 yesterday as it was part of my testing.  There was no difference.  I was seeing ping loss on both IPV4 and 6 asymmetrically. I did notice hop 2 being a private address, so I'm not sure what to make of it in the realm of the Comcast world, it is definitely weird.  It does seem to be some kind of CGNAT but yeah, normally that stuff is in the 100 range.  Going to have a friend see if his 2nd hop is similar. 

@Hemingray42​ 

Seems so... But a question would be why is the IP addy in the private / non-routable range of 10.x.x.x.....

@EG​ Which makes this very weird. CGNAT usually lives in the range of 100.64.0.0 to 100.127.255.255. Not seeing it in my area as of yet though so can't tell.

@hawke_114​ I have a feeling we are close in area, that cermak hop times out for me as well.

@Mr.B​ I am in northern Illinois (Rockford here). Even tho modem has been replaced and confirmed.not the issue they're now offering that I pay monthly for their modem lol like I would after this hell. Why wont maintenance talk with us so we can collaborate to solve this issue? So frustrating 

@Mr.B​ yeah, 11/4 was when I got the notification about "improvements". It has been unstable for me ever since. 

@Mr.B​ interesting so that's what that extra hop is? That's fine, but it's odd the latency is higher than later hops.

@EG​ I'm just so tired. Who knows--the issue may be completely unrelated to the 10.x hop. But there seems to be a definite correlation between local network enhancements/upgrades and intermittent connections. The 10.x device was more a curiosity/interesting. Okay, rant done, sorry. 

Hi there, @RavenDynamics. I am sorry to hear that you are having issues with your devices going through multiple power cycles. You are in the right place and I am happy to take a look at your account. 

Could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue. To send a "Peer to peer" ("Private") message:

Click "Sign In" if necessary

• Click the "Peer to peer chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it

@Jlavaseur​ unfortunately, I tried both those and neither led to a switch login. Also, I'll double-check, but I'm 90% sure that device doesn't show up on my router's list of private network devices.

I read that the default http port number is 80 or 8080, but it could of been changed for obvious reasons…

The management for the device is likely not exposed to any of the "LAN" interfaces.

Hi, @user_215fc6. I see you are having a similar issue, and you'd like some assistance as well. We certainly don't want you to feel like you don't have support. I'm glad to help. I ask that you reach out privately, so we can cover the details of your account. You can start by clicking the chat icon located in the top right corner on your forums' page when signed in. Once there, you can search for "Xfinity Support" to compose your direct message. Please add your full name and service address to help us locate your account. Let me know if you have any questions.