will tell you up to a week to be effective, further supporting that the "DNS error assist" is an infrastructure-based setting being pushed to your router that they not only know they have recently put into place, but have the ability to disable. Note this is actually a per-use back-end server setting and as you will see the DNS setting says it can take up to 24hrs whereas the more "typical" privacy crap of the advertising etc. (OPTIONAL): While there, you may also choose to click "External Marketing & Analytics Reports", "Relevant Advertising", and "Enhanced Relevant Advertising" and also OPT-OUT of all of those that they also DO NOT TELL YOU THAT YOU HAVE ENABLED ON YOUR ACCOUNT. IP Passthrough is also commonly used as an alternative to using a bridged mode. Click "DNS Error Assist " and FRIGGIN CLICK OPT-OUT!! This is what is redirecting (via the router) your DNS queries ACTIVELY TO THEIR SERVER (104.239.207.44 is an AT&T address via Rackspace). OVERVIEW About Configuring IP Passthrough and DMZplus This configuration is often suitable for a customer desiring to connect third party equipment for networking, such as a router, to the AT&T provided gateway.Navigate to att.com and in the upper-right LOGIN.This appears to be a firmware issue with no known current workarounds other than to take precautionary measures to ensure your DHCP replies first. NOTE, this does NOT fix the recent router firmware issues that also re-enabled IPv6 without notifications that is also allowing THEIR ROUTER to continue to hand-out DNS even when you set a single IP pool range for DHCP with a non-existent reservation (which should in effect kill all DHCP on their router from handing out ANYTHING). Here is how to disable AT&T's "DNS Error Assist" service on your account. So my bet is you also don't know that by default AT&T has taken upon itself to forcibly inject it's own DNS server (as the router) with the latest round of firmware and unless you TAKE ACTION TO OPT-OUT, will intercept your DNS queries via new changes in router firmware pushing out the router as DNS server.ĪT&T's VERY HIDDEN "helper" redirection for DNS that YOU MUST OPT-OUT of is named "DNS Error Assist" which causes this unwanted behavior. Now, what REALLY took friggin digging including phone calls to finally find an engineer to let the cat out of the bag is why the "104.239.207.44" address? Where is that coming from? In almost every case, simply preforming a IPCONFIG /RENEW right there and again performing the /ALL, will then correctly show that YOUR DHCP SERVER'S ASSIGNED DNS SERVER is now listed. You will see SPORADIC mis-resolutions of EVERYTHING to that 104.239.207.44 address if their crappy router happens to hear your PC's DHCP request - EVEN IF ANOTHER DHCP SERVER ON THE NETWORK assigns the ultimate address.ĭo an IPCONFIG /ALL on the PC in question, and look carefully only at the DNS SERVER line.and note it is wrongfully THE ATT ROUTER (192.168.1.254 in my case)!. And since my router address is different than public I am probably behind a "carrier grade NAT".How to disable the very little-known AT&T setting that can appear to hijack your home DNS lookups and redirect to 104.239.207.44 IssueĭNS queries on home network suddenly resolving hosts to 104.239.207.44. While typing this, a "Similar Question" popped up: Setting up a public FTP server on an Access Point and one of the comments says that addresses starting with 10.x.x.x are "private". NETGEAR 4G LTE Modem – Instant Broadband Connection (LB1120).I have port forwarding setup properly and firewall shouldn't be an issue as this worked fine on this PC with Verizon.Ĭan I setup an FTP server with the service I have? What the heck is my ip address? I have tried all 3 addresses and none connect to my FTP server. My router reports one ip address (same one reported by the 4G modem), Google tells me another (type "what is my ip" in search), and gives a third one! How can I have 3 ip addresses? This worked fine with Verizon but does not work with AT&T. /rebates/2fwi-fi2f&. Issue: I have an FTP server setup to transfer files for work. I now have AT&T's "Unlimited Plus One Line" plan. ![]() I live in an area with no wired service, so 4G is my only option). I had Verizon's Home Fusion (or whatever they call it now.
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