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I have two ESP8266's trying to talk to each other, a 'host' and a 'client', if you will. I have the ESP8266mDNS.h responder running on the host at esp8266wifi.local. On sending an http GET request to http://esp8266wifi.local/, I have the webserver send a simple "Success" message.

When I use my computer to access the host in a web browser, it responds just fine, "Success". But when I use the client ESP8266 to send the GET request, it appears to be redirected to my ISP's search engine. The raw html reads:

<html><head><meta http-equiv="refresh" content="0;url=http://search.frontier.com/search/?q=http://esp8266wifi.local/&t=0"/></head><body><script>window.location="http://search.frontier.com/search/?q="+escape(window.location)+"&r="+escape(document.referrer)+"&t=0";</script></body></html>

It appears to respond correctly when I connect to the IP address, http://192.168.0.10/ using ESP8266WebServer.h but when I use the mDNS request I get redirected. Is there any way to work around this?

EDIT:

I tested on my phone's internet browser and my Wii U console and I also get the same redirect to my ISP's search engine.

  • Those devices probably don't support mDNS, so they do a regular DNS lookup to the ISP's DNS servers. Because that domain name doesn't exist outside of your network, ISP points it to their search engine. – gre_gor Feb 20 '17 at 22:08

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