- Okugcinwe kunqolobane
captive portal detection fails with redirect from detectportal.firefox.com to mymodem.modem, which does not resolve
My Firefox Developer Edition just required manual help to upgrade to 73.0b2 because the auto-upgrade failed. Not sure if that is important. All new tabs and windows had … (funda kabanzi)
My Firefox Developer Edition just required manual help to upgrade to 73.0b2 because the auto-upgrade failed. Not sure if that is important. All new tabs and windows had the "You have to connect to the internet" captive-portal bar across the top, but I'm on a home network without captive portal. Clicking the "go to login page" button went to a "can't find that page" error page.
I tried curl from the command-line of my Mac (10.15.2) and got this:
- Trying 2600:1415:1c00::17c0:6c92...
- TCP_NODELAY set
- Connected to detectportal.firefox.com (2600:1415:1c00::17c0:6c92) port 80 (#0)
> GET /success.txt HTTP/1.1 > Host: detectportal.firefox.com > User-Agent: curl/7.64.1 > Accept: */* > < HTTP/1.1 302 Moved Temporarily < Server: nginx < Date: Wed, 08 Jan 2020 10:07:46 GMT < Content-Type: text/html < Content-Length: 154 < Connection: keep-alive < Location: http://mymodem.modem < X-Frame-Options: SAMEORIGIN < Content-Security-Policy: default-src 'self';script-src 'self' 'unsafe-eval' 'unsafe-inline';style-src 'self' 'unsafe-inline' < Cache-Control: public, max-age=31536000 < <title>302 Found</title>
- Connection #0 to host detectportal.firefox.com left intact
- Closing connection 0
I'm prepared to believe that this is ISP-related, rather than Firefox, but on the off-chance that it's somehow down to a misconfiguration of the captive-portal detection servers right now, I thought that I'd report it here.
I've stopped this from happening by setting about:config network.captive-portal-service.enabled to false, but would ideally prefer that this not recur on the next profile reset.