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Failed to access IPv6 only site with Firefox

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  • 32 have this problem
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  • Last reply by tlichy

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I am assessing my company IPv6 readiness with Firefox. We have our internal DNS (dual stack) set up now responding with IPv6 address only for the host name of a test web server. I configured a test Windows machine (dual stack), with said DNS, and was able to ping with the test web server with host name.

Now comes Firefox. I can access my test web server with IPv6 URL (http://[a:b:c:d:e:f:g:h] kind) but when I cut and paste the host name (the one I successfully pinged with) , no, Firefox can't access it. What could be the problem that cause Firefox to not resolve that name to the proper address? Ping works fine, why doesn't Firefox?

I am assessing my company IPv6 readiness with Firefox. We have our internal DNS (dual stack) set up now responding with IPv6 address only for the host name of a test web server. I configured a test Windows machine (dual stack), with said DNS, and was able to ping with the test web server with host name. Now comes Firefox. I can access my test web server with IPv6 URL (http://[a:b:c:d:e:f:g:h] kind) but when I cut and paste the host name (the one I successfully pinged with) , no, Firefox can't access it. What could be the problem that cause Firefox to not resolve that name to the proper address? Ping works fine, why doesn't Firefox?

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Make sure you don't have IPv6 disabled.

See that network.dns.disableIPv6 is not set to true (from about:config).