Disabling IPv6 in Firefox

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Recently I had an issue where a site was restricting itself to a single IPv4 address. Unfortunately the new server that uses it also supported IPv6. When firefox hit it, the server reported that it wouldn't work with the new server.

I used my favourite site, icanhazip.com to check, and it reported an IPv6 address.

I then entered about:config in the address bad and searched for:

network.dns.disableIPv6

I set this to true, then checked icanhazip.com again, and got the IPv4 address. Now the site worked for my server.
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This page contains a single entry by CJ published on March 27, 2012 7:43 PM.

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