Disable ipv6 on comcast router. IPv6 FORWARD drop, (##) Attempts, date and time .

• Disable ipv6 on comcast router If I disable IPv6 on the router, wireless dies! Disable DHCP outright Self explanatory. has to be a bug with its IPv6 support but its gotten really bad since the latest update. The routers would only get IPv6 link-local addresses and would continue to process IPv4 packets just Mar 18, 2025 · Motivation. Jul 26, 2020 · At some point the modem will just decide to stop routing traffic downstream. These are: RADIUS/TACACS+ accounting for wireless clients and admin/CLI login; IP Passthrough (not needed with IPv6) Aug 6, 2019 · Hi Gina, The link that you posted is great for IPv4, but the issues here are with IPv6. net; Go to Advanced > Advanced Setup > IPv6; Select the IPv6 Connection Type based on your ISP-provided details; Common connection types: Unfortunately there is no way to disable IPv6 it’s a modern standard. coming from the ONT (well, beyond the ONT) Even Windows is able to get a IPv6 from DHCPv6 when plugged direct to the ONT, but Wireshark shows zero router advertisements. FW. Thank you for joining us here on r/Comcast_Xfinity, your official source on Reddit for help with Xfinity services. Last night I removed the ISR 1921 and made the modem the default routing device with any port forwarding rules either in The main connection is an Arris SBG10 modem-router combo on Comcast shared with other people in the house. Bridge mode cripples the functionality of the router/modem that Comcast includes. I grasp that part both on the router and windows server settings. I’m using the XB6-T modem. IPv6 INPUT drop, (###) Attempts, date and time. The easy solution is to disable WMM. How To Enable IPv6 On Xfinity Router (How To Set Up And Enable IPv6 On Xfinity Router). Looking through the manual I don't see where this router allows you to to request a prefix but its probably under Learn about the different WiFi network security modes and how to change them using Xfinity xFi and the Admin Tool. In the past when ipv6 was working wifi devices all ran at 867mbps. Routers share a Comcast modem with two other routers. Our content will maintain support for IPv4 while adding support for IPv6. Oct 26, 2022 · Thought it was my router or modem but turns out I had IPv6 off and once I turned it on, the lag got fix and my download speeds are now stable. Normal Mode - I get IPv4 & IPv6 Anyone with the Netgear ( in bridge mode ) having any problems with this? I am testing this with a wn7 computer directly connect to the Netgear ( comcast modem). Jul 16, 2015 · I need to do a new fresh install of Windows Server 2012 R2 Essentials on a new small office server. Sep 23, 2021 · This is a cga4131com rev 2. 11b), and the issue is the radio in the product isn't compatible with WiFi 6, you can change WiFi standards the gateway is using the phone app. I have the Gateway set to the static IP of the pi-hole for IPv4 and it is blocking IPv4 requests just fine Apr 20, 2021 · Currently running a 'Tunnel Broker' for my IPv6 - overall IPv6 speed is reduced by ~20%, but the quickness of web pages outweighs the speed loose. In my router this was in 'Media Prioritization', 'Settings'. But there is no specific setting on the "IPv6 Setup" page for DHCP and DNS behavior. Feb 26, 2023 · Hi all, I have a comcast gateway router so I can't disable its DHCP server as far as I know, because it has the "safety feature" described here Why won't Pi-hole work with DNS rebind protection enabled? so running the pi-hole DHCPv6 server will be duplicating servers as far as I know. Disable ipv6 on the LAN computer (if using Windows just toggle tcp ipv6 under the network adapter). May 16, 2015 · Setup IPv6 correctly for your ISP. Dec 4, 2015 · I'm having some issues on many devices on my network, that might be IPv6 related. Jun 29, 2022 · Please advise how to disable IPv6. IPv6 FORWARD drop, (##) Attempts, date and time . Before installing, I need to disable DHCP of both ipv4 and ipv6 on the router. They'll just have link-local IPv6 addresses. I don’t think speed tests run on the router are reliable once you get over 800 Mbps or so. Also have comcast upgrade your modem, the xb3 is super old, you’ll gain speed and reliability with a more modern modem. This is anticonsumer. Occasionally, something would break with the IPv6 PD on the Comcast modem, and I could fix things by essentially refreshing my interfaces on the router (even this didn't work with this week's firmware update, I had to power cycle the modem to get IPv6 backup). Select the firewall setting you want. 0. Comcast seems to route v6 traffic and randomly be unable to route v6 traffic. DoT to Quad9 with DNSSEC. Comcast offers both IPv6 and IPv4 addresses when using DHCP for WAN. If you do, you need to disable the router and firewall on either the Comcast box or Linksys box, or just remove the Linksys device from the network. Comcast gateway/modem/routers provide NAT between IP versions 4-4, 6-6, and 4-6, so IPv6 on the LAN is absolutely Mar 1, 2017 · Comcast v6 is breaking things. Teredo is an ipv6 tunneling technology and it gets wonky if you actually get an ipv6 address from your ISP. Normally, that's not a problem. No issues other than RAM usage that climbs over a week which a scheduled reboot solves. set firewall ipv6-name WAN_INBOUND default-action drop set firewall ipv6-name WAN_INBOUND rule 10 action accept set firewall ipv6-name WAN_INBOUND rule 10 description "Accept Established/Related" set firewall ipv6-name WAN_INBOUND rule 10 protocol all set firewall Plug directly into the Comcast gateway and see if you get a 10. If you are on CG-NAT for IPv4 and have working Ipv6 then the only sensible option to directly expose ports to the internet on your network clients is to use the IPv6 protocol. x IPv4 address (ipconfig) and working IPv6 (test-ipv6. A key aspect of Comcast’s IPv6 program is to make the company’s content available over IPv6, as well as to enable IPv6 connectivity across all broadband and Internet products. Nov 20, 2024 · IPv6 breaks things! We don't need it and don't want it, but Comcast denies customers the ability to disable it. It is disappointing that an old Netgear CG3000DCR will properly route IPv6 DHCP-PD and cllients behind a firewall or router and the Techicolor gateways do not unless they are in bridge mode. Sep 15, 2023 · To Change the Firewall Settings on Comcast Xfinity Router, log on to the Xfinity Gateway’s Admin tool, click on “Gateway” on the Homepage and then select “Firewall”. Comcast Xfinity blocks the ability to setup a 6in4 tunnel through a tunnel broker service. 2 Set Static IPv6 connections on your ASUS router or mesh Wi-Fi; Step 3. If you enable IPv6, the router will not allow connections via IPv4. My network was humming along for months. They don't even bother to tell me how many of the 16-bit subnet is available to use. 1 Set Native IPv6 connections on your ASUS router or mesh Wi-Fi; Step 3. Out of nowhere, WiFi calling started changing to "cell preferred. Apps like 365 and anything else modern is v6 enabled and this causes Outlook to hang, Skype to stop working, so and and so on. In addition, I believe they disable IPv6 prematurely for maintenance windows. The options given on drop down menu are: Auto detect, Auto Config, 6to4 Tunnel, 6rd, Pass Through, Fixed, DHCP, PPPoE and Orange France Which one should I choose please? May 26, 2022 · Step 2. 76. As you can see, Comcast was able to come in and intercept ALL our DNS requests. However, a few days ago, Comcast changed my public IP address from IPv4 to IPv6. I found windows and linux systems on the LAN issue ICMPv6 "Router solicitation" packets. IPv6 > Connect to DNS Server automatically -> Disable; IPv6> IPv6 DNS Server 1 -> Link local IPv6 address of your local DNS server (PiHole)* Jan 6, 2025 · It is stateless and encapsulates IPv6 packets into IPv4 packets. Any suggestions on what I can replace comcast's equipment with that will give me control over IPv6 as well as let me use any DNS I want? (currently using OpenDNS) Thanks for any advice, Doug Jan 26, 2021 · The VPN provider asked that I contact my ISP (Xfinity ) to see if IPv6 can be disabled on my Xfinity XFi gateway/ router to only use IPv4. (3) Login to router again, when IPv6 LAN setting appear IPv6 information, the settings of the "Native" are complete. May 5, 2017 · I have a N600 WiFi cable modem Router and I cannot update its firmware. I went to advanced-Administration and there isn't an option. You will need to take your cable mode out of bridge/passthrough mode, and your "router" behind the modem has to do DHCPv6-PD and send a "hint". On the MX, you cannot. Jan 5, 2013 · You may have full ipv6 service. I previously used bridge mode Cisco 1921 . HOWEVER, Comcast is able to turn it on/off and configure it. I can't disable ipv6 on every device in the network, it's insane. The only problem I have is that I can't disable the IPv6 to allow my device to connect to the IPv4 address. Comcast DNS traffic (to the IPs below) cannot be proxied through WARP. Dec 14, 2016 · Having trouble getting IPv6 running again. " Then my DNS server started flaking out. Aug 15, 2024 · This is a dual-stacked implementation of IPv6, so IPv6 and IPv4 are used alongside each other. But I'm not getting ipv6 - all my wifi devices are running at 433mbps. Then get an actual router, where it allows just not enable IPv6. Click Save Settings and close the browser window. In the modem's Firewall Logs, you'll see something like "FW. It is not clear why Comcast is blocking our control of IPv6. NO HOME USERS NEED IPv6, and few if any business customers actually need it. Mar 18, 2025 · Here are the details: My router is only assigning an IPv6 address with no IPv4 address. 1Default Comcast Username: admin (custadmin)Default Co Jan 2, 2023 · I use native IPv6 with Comcast on my AX86u. The device can only access 2. Dec 21, 2024 · How to Disable IPv6 on Routers Most routers allow you to disable IPv6 through their web interface. I just disable IPV6 in windows 10 (google how to do this) so my IPV4 is used. Disable router DHCP, enable Pi-hole DHCP, you're done. Default IP: 10. I have comcast and ipv6 works perfoect for me with the AC66 router. IPv4 Addresses: 75. WAN-to-LAN : IDS Enabled and block as per selections below. As of this writing in early 2024, we aren’t yet at the point where there are a lot of IPv6-only destinations on the Internet, but here in the US at least, over half of all autonomous networks are IPv6-capable; moreover, the set of sites preferring May 28, 2022 · As a residential customer, I have a computer that I could sign into from the public side of my Linksys WiFi router. In general, you will not need a new Comcast device to take Oh, Comcast also pushes out IPV6 DNS. I know Comcast is handing them out slowly so might give that a try. Jun 7, 2021 · I am trying to connect my smart home device (Litter Robot) to my WiFi. Hosts behind my router on an IPv6 subnet can't seem to reach the Internet. I wont even go into their Jul 27, 2017 · I've changed the DNS settings on my router from Xfinity to OpenDNS servers, because I'd like to use their filtering for my kids safety. If you can find the standard the WiFi radio in the product uses (should be on the box somewhere, it will say something like 802. 3 comcast router. I have had a lot of issues in the past with the ‘stateful IPv6’ in the comcast routers screwing up AD on servers so it’s likely something to do with that. Disable Firewall for True Static IP Subnet Only: Checked This is a critical setting for pseudo-bridge mode. No user complaints. Configure the IPv6 settings on your ASUS router or mesh Wi-Fi. Step4. Did you request a IPv6 via track interface? With pfsense you will request a prefix via delegation, and then track interface tells which prefix out of the delegation to assign to your lan interface. Depends on what you have to work with. DHCPv6 Server: If the router has a built-in DHCPv6 server, you may find IPv6 settings within the DHCPv6 server settings. Mar 29, 2022 · I can't comment on the Technicolor router since I don't have one and have never used one, but generally speaking if you want to disable IPv6 on Comcast service you'll need your own router unless whatever problems IPv6 causes you are specific to some particular device/service and you can just disable IPv6 on the affected devices. com But you can't disable IPv6 or set an internal IPv6 DNS server, so devices will still use Comcast even if you use another device for IPv4 DHCP. E. NOTE: This is a security issue for any business using Comcast. No browsing failures. Best way I was able to work around it was change the DNS server under WAN to AdGuard, and then change the IPv6 DNS server to AdGuard as well. I know it's not the best of news. In this video tutorial I will show you how to enable IPv6 on Xfinity Aug 25, 2017 · Comcast recently released a firmware for the home user version of this device which appears to have broke bridge mode. Can I completely disable v6 on the modem? It kills email on Android while internal, and when I edit it to use a private v6 it breaks all Amazon echo devices. The Feb 27, 2025 · CM4652442 from MediaCom Service Provider (they don't allow router settings changes) KVD21 from T-Mobile ARRIS / MOTOROLA DG2470 BGW210-700 ️ BGW320-500 (May need to disable IPv6 on LAN) DG3450 MG7540 ️ MG8725 (Most units compatible. unchecked Block http (TCP port 80, 443) unchecked Jul 16, 2015 · But what about IPv6 on this router? How to you disable the IPv6 DHCP on this? It isn't straight forward like the legacy IPv4 way of doing things. Just don't configure IPv6 on the external interface. Once you confirm IPv6 availability, login to your NETGEAR router and navigate to the IPv6 configuration settings: Access the router admin interface at routerlogin. set interfaces ethernet <interface> ipv6 address autoconf. The reason for having that Mickey Mouse setup is that their cheap consumer-grade junk wireless router REQUIRES IPv6 when its wireless is enabled. 76; IPv6 Addresses: 2001:558:feed::1 and 2001:558:feed::2; To work around the issue, you can either: Jun 12, 2021 · @johnpoz said in Enabling IPv6 on Comcast home network: @lenhuppe said in Enabling IPv6 on Comcast home network: but the LAN devices do not. This was working fine just a few days ago. There are NO router advertisements on the WAN, i. On my OPNSense firewall I can just disable IPv6. Firewall IPv4 check Disable Firewall for True Static IP Subnet Only unchecked Disable Ping on WAN interface Custom Security. Comcast static IPV4 dynamic IPV6. Mar 20, 2018 · My setup assumes you get /64 prefix from your ISP (Comcast in my case) via DHCPv6. Nov 20, 2014 · I can get the IPv6 but, not the IPv4. I. I am sure there are more elegant ways, but simple works for me. 4 GHZ connections. ) NVG468MQ Oct 12, 2016 · Here’s my problem. May 24, 2023 · @user_c5b358 If you are using Xfinity equipment, you won't be able to disable IPv6. Go to the IPv6 settings on your ASUS router; Step 3. LAN-to-WAN : Allow all. Here is what the problem Comcast's support of IPv6. Try setting that and saving/rebooting your router. See full list on gadgetreview. if you ssh through the router to an IPv6 address, the router will randomly kill the session. Comcast uses Xfinity servers for account log-in credentials. Comcast's network is ill-configured and marks all the packets as low priority. -Jon Oct 24, 2019 · Am running IPV6 Native on two AC68U's. Nov 13, 2020 · I set the IPv4 DNS and IPv6 DNS servers statically on the workstations so that they won’t query and get the router’s information. . Disable Gateway Smart Packet Detection: Checked We ran into issues with Comcast and ipv6 not too long ago. u/topcheddarsauce With a Xfinity leased gateway there's no option to disable IPv6, you would have to place the gateway into bridge mode and connect a third party owned router, or replace the gateway with an owned modem/router. I want to turn this on but not sure of the right option. If you’re using one of MikroTik’s fine routers as an Internet gateway, you may at some point wish to enable IPv6 service on it. Make sure you validate the ability before purchase, either in the manual or emulator, etc. I need the server to be my Domain Controller and DHCP (not the router). outs with Chromecast with google tv, since the last update ipv6 is causing mine to drop out all the time , easiest fix was to disable IPv6 on my router. The only real down side other than the initial learning curve is that you need to be mindful that your firewall & port forwarding rules are consistent across both protocols. Please reach out to us if you need assistance. Bridge mode- only get IPv6. It is in Comcast's hands to design front end software and firmware for these options. When IPv6 is enabled, some router features are no longer supported. Dec 5, 2014 · So I disable the "Enable LAN DHCP" on the "IPv4 setup" page. Limit the DHCP scope and assign a MAC reservation Multiple DHCP servers can coexist quite happily and fairly regularly do outside of home environments. Static IPv6 Mar 6, 2021 · Even before this recent firmware update, IPv6 under Comcast was never great for me. No other router/modem designer or manufacturer that I know of disabled the user's ability to modify DNS or DHCP the way Comcast is. By default their modem/router has an IPv6 DHCP server built in that (according to Comcast) cannot be disabled. I use pfsense as my router, which is simple to enable or disable IPv6 Dec 5, 2014 · In one of our branch offices we are currently experiencing an issue where all the computers are preferring the IPv6 DNS Servers over the IPv4 DNS Servers given out via DHCP. Apr 23, 2014 · Comcast apparently just rolled out IPv6 in my area, as I discovered that my pfSense box had picked up an IPv6 address on its WAN that it hadn't had last week. the correct setting for comcast ipv6 is the DHCP with PD option. Related Comcast Communication services S&P 500 Public company Business Finance Business, Economics, and Finance forward back r/openwrt OpenWrt news, tools, tips and discussion. I want my own network so I got a TP-Link AX1800 router and set it up with all my devices. From what I understand I need to UNCHECK Stateful and just use IPv4 DHCP on the server? (yes, disable Ipv4 on router also). I do run QOS on the Asus and AIProtection. Aug 3, 2020 · If your ISP doesn't support IPv6, you don't need to go around to all your machines turning IPv6 off. 75 and 75. Additionally, all IPv6 DNS lookups are "intercepted" by Comcast and redirected to their IPv6 DNS servers. Second, use your own modem/router and don’t use XFi Complete. Comcast Business Support Co Dec 17, 2019 · For some reason, my ISP assigns dynamic IPv6 address for my router - it changes after each reboot and even the first 48-bit routing prefix changes. Next step is to setup DHCP First off - make sure you update the firmware to the latest version. The problem is (along with not being able to disable IPv6) the MXs also force that IPv6 address to be "Active" with the IPv4 being in "Ready" state, which you also cannot May 28, 2023 · I had Comcast and my Cisco RV34x router working fine with IPv6 there. We had to disable ipv6 on all staff machines who had comcast at home. Forget the 6in4 tunnel. I had no issue getting speeds to 2 devices exceeding 1300 Mbps. This article covers how to use the network settings and Advanced Settings in Xfinity xFi using the Xfinity app. Comcast Nov 17, 2015 · Unfortunately, IPv6 on the DCP3941B appears to be broken even for direct assignment - even with machines plugged straight into the router, any IPv6 TCP session will get killed by the router randomly. Firewall → Firewall Options. In order to troubleshoot it, I want to entirely disable IPv6 on the router itself. my Netgear orbi just didn't have a setting that Jul 30, 2021 · About 5 months ago I got a new router and used the same settings for ipv6 that my last router used. Your two options are one, to hook your router to the XFi gateway, put the XFi gateway in bridge mode and change dns in your router. Blasting IPv6 router advertisements on all intefaces is not necessarily a good idea: /ipv6 nd set [ find default=yes ] disabled=yes. The firmware is way outdated but I cannot update it! How can I update it? Also, I want to disable IPv6 as I understand it will help with a Chrome/Facebook issue where my cpu goes to 100% and the feed won't load. I followed the steps here to make sure everything was configured right; I see IPv6 addresses on my WAN and LAN interfaces, as well as on my laptop, yet my devices don't seem to have IPv6 Change Xfinity/Comcast Router Settings! ALL SETTINGS!SMASH THAT SUBSCRIBE BUTTON!----- Oct 18, 2014 · This is actually an issue with Comcast on certain Linksys or Cisco routers. Everything is works fine with NAT. Aug 9, 2024 · Since IPv6 does not require NAT, connected devices are directly accessible to the Internet at-large unless a firewall prevents it. Hey everyone! I'm trying to help a friend disable his IPv6 settings because of it causing issues on his xbox one. I'm using a Technicolor TD5130v2 as modem/router/ap. Sep 24, 2019 · The Comcast IPv6 DNS servers will be prepended regardless of any other setting, static or dynamic. Since you are using your own modem, reboot your DD-WRT router after setting up Prefix Delegation to see if it pulls an IPv6 address on the WAN port from Xfinity. The Cisco configuration, in brief, is: WAN DHCP connection, DHCP-PD on (64-bit prefix); LAN and RA set for that Prefix. It started the day that IPv6 was turned on the 11-20. Oct 14, 2014 · Internet Protocol Version 6. So without the router advertisements even though there's address is assigned and available, there is no route. More information can be found at Comcast help forums. I am currently using the Dual Band XB3 Gateway which has the 5 GHZ AND 2. (2) Click [Apply] to save. IPv6 connection type . Step 3. When I go to my OpenDNS administration page, I see traffic, and I can get reports, but when I use their test page to verify that I've set up my router for their s Nice to hear about your query that you want to enable IPv6 on your router, first we need to check if the router has the compatibility to support Ipv6. My ISP was Earthlink who used Comcast to provide me with broadband via a cable modem. Please share the router make nad model, I will guide how it can be done if it supports System -> Advanced -> Networking -> Allow IPv6 WAN Interface IPv6 Configuration Type - DHCP6 Use IPv4 connectivity as parent interface - ticked DHCPv6 prefix delegation size - 64 Send IPv6 prefix hint - ticked Block BOGON networks - unticked LAN Interface IPv6 Configuration type - Track interface IPv6 Interface - WAN Dec 16, 2024 · Firewall Settings: Some routers may have IPv6 settings within the firewall settings, where you can configure rules and filters for IPv6 traffic. Sep 17, 2018 · So, should I give Comcast back their Cisco modem/router/wifi box and buy my own modem/router? I am using a Eero mesh network for wifi. Aug 21, 2023 · There is no setting to disable IPV6 on Xfinity gateways. com). Reading through the ethernet docs again, I see that . Access your router settings : Open your web browser and enter your router’s IP address. DHCP is disabled. IPV6 dns will respond before IPV4 will. Today with IPv4 that all works as expected, with V6 not so much on a Comcast router. You can set Firewall Security Levels, Parental Controls, etc. x. has a specific note that This method automatically disables IPv6 traffic forwarding on the interface in question. Feb 19, 2020 · under DHCP i can't disable the DHCPv6, when I unselect the option and save the toggle come back. The router can access IPv6 but anything behind router can't, even with the NDP proxy. x range. Jan 22, 2018 · In this video, we show you how to turn off your Comcast wifi and enable bridge mode. For the connection type, I have options for disable, native, static IPv6, Passthrough, Flet's, and Tunnels. What you really want is to request a /56 IPv6 prefix from Comcast and use that prefix as the IPv6 range on the LAN side. Rebooting or reconfiguring the router or any other device downstream has no effect. Certainly not on the LAN interface. Feb 8, 2024 · Hosts running IPv6 connected to the router can connect to hosts on the Internet. Those replies include Comcast DNS servers. e. This means that the iPads are grabbing the incorrect Comcast DNS servers and trying to use them instead of my internal DNS. Everything is working except my ability to access my LAN from the public side of my router. 75. Once disabled, confirm if you're getting an ipv4 address via DHCP - by default it should be in the private 10. My computer is set to DHCP, not static IP. The problem with this is that the new iOS 10 update forces IPv6 DNS preference over IPv4. I give the AX1800 a static IPv4 address and put it in the DMZ. I don't know enough about this stuff yet but basically, the broad solution is to disable IPv6 on his router, that being said, he is using an Xfinity router and it doesn't seem like there is an easy way to handle this. I have AT&T so it is Native and Stateless, and Enable Router Advertisement and DHCD-PD are Enabled. /ipv6 address add address=::1 from-pool=lan-v6 interface=lan /ipv6 dhcp-client add add-default-route=yes interface=bond1 pool-name=lan-v6 prefix-hint=::/64 request=address,prefix use-peer-dns=no /ipv6 firewall filter add chain=input protocol=icmpv6 add chain=input connection-state=established,related add chain=input dst-port=546 in-interface incase anyone has started noticing more wifi drop. Comcast / Xfinity routers do this without a problem, and 99 percent of all networking routers, from the $30 trash tier to the many-thousand$ enterprise equipment, expect DHCPv6-PD to work this way, and are only coded to work this way. Sep 3, 2022 · Currently the IPV6 is set to "disabled". Try turning off ipv6 in the router. Bridge Mode Disabled. Custom Security: Allows you to block individual types of traffic or disable your firewall entirely. And the CG3000DCR responds with ICMPv6 "Router advertisement" packets. Last year I did switch to my city's fibre network but the IPv6 configuration was unchanged (just unplugged the router from the Comcast modem and plugged it May 11, 2024 · Enabling IPv6 on a NETGEAR Router. You can’t change dns on the XFi gateway. Jan 27, 2020 · The system will then put a router soliciation packet on the LAN and if the router is configured to respond to this packet, i. I would just simply disable the IPv6 DHCP server, however, it is coming from a COMCAST business modem/router and after calling them repeatedly and asking them to turn it off they are refusing to. This is the case whether you use your own modem or a comcast modem. Dec 5, 2014 · As reported earlier, there is no way for a CUSTOMER to turn off IPv6 on this router. Mar 28, 2023 · FW. Native (1) Select the IPv6 connection type as "Native". Nevertheless, the root cause has always been Comcast IPv6. Using the laptop, I can connect to the internet via mobile hotspot and access all websites. (5 users or so). Comcast/Xfinity is the ISP at my location. Only problem I have seen has been with 'Comcast' - Comcast uses mainly IPv4 servers, where Xfinity uses IPv6. This is because Comcast rejects DNS traffic that is not sent directly from the user's device. IPv6 cannot be disabled overall - even if devices have their IPv6 "turned off", the router will forward v4 to v6 and insert itself in the mix. Also assumed is empty IPv6 configuration. Note: If you have an XB7 Wireless Gateway, you’ll only see options for Typical Security and Customer Security after selecting IPv6. First I like to disable default neighbor discovery interface. As members of the Digital Care Team here at Xfinity, we can help with a wide array of concerns including troubleshooting, billing, plan changes, and more. Jan 21, 2022 · Hello, I have the same setup as you. 3 Set Passthrough IPv6 connections on your ASUS router or mesh Wi-Fi In the arris line for example the S33 would be only a modem. I was using a netgear R6400 router when ipv6 was working. My router is getting proper prefix delegation from the Comcast router and my IPv6 subnet is working correctly. IPv6 FORWARD drop , 6769 Attempts". Anything that used or defaulted to it, even if it could fail over to v4, was having troubles. My question is how do I completely disable the Firewall? Do I have to call comcast to get this done? My other statement / question is why the explicit can't Comcast provide a router that allows admins to manage DHCP better. That has happened numerous times. Mar 29, 2023 · The following steps will configure the CG3000DCR (or the discontinued SMC8014) for pseudo bridge mode by disabling the various Comcast gateway router functions. And pretty sure its on the comcast approved list. I am using an iPAD where IPv6 cannot be disabled on the device so the they are telling me that IPv6 has to be disabled in the Xfinity XFi Gateway somehow. Learn about the newest IP. 4 GHZ connections and IPv4 router. (router info at bottom) Obviously ipv4 is straight forward, but ipv6 is NOT. Feb 22, 2020 · I am looking for the most trouble free router boot process; I am not concerned if lookups are going Comcast as the router boots before DNS over TLS startup has completed; Accordingly, I just take the IPv4 and IPv6 DNS servers which the Comcast DHCP server hands out (or however IPv6 does this) Aug 28, 2020 · Great hint, thanks for sharing it! On a related note, back when my static IPv6 actually worked (prior to the modem replacement), my Mikrotik device received the same /59 as a sub-delegation from the comcast modem for years. Limit the router's DHCP scope to precisely one address, and MAC bind that to the Pi-hole host. On the Comcast routers you cannot turn off IPv6 at all. I just want to know what the actual setting should be for my Asus RC-3200 AC router. Its manual doesn't seem to cover IPv6 except for a brief mention on "Supports IPv4 and IPv6 protocols" on the features page. A couple of years ago, IPv6 started working with my pfsense router/firewall automatically based on the default configuration settings for WAN and LAN. You can on some 3rd party routers/mesh networks -- look for the WAN connection on the router admin setup page, and it's easy on a firewall. I have spent time configuring my Sophos UTM virtual machine to handle NATing ports from one external to another. Likewise, the Netgear consumer-grade routers should have IPv6 enabled by default (just as IPv4 is). , router advertisement is enabled, the router responds with the correct network prefix, the router address (which oddly enough can be a link-local address), name server addresses, DNS domain, DNS domain search order Mar 5, 2024 · I would start by putting some kind of router between your network and the Comcast router (if you haven’t already) and disable IPv6. nwq oyipoe eijn ugmdr ykek iqeind hzwg fgyexf jsvslg syxxm sievf tsqgjum jiai atpck svhf