Show the IP address(es) of the current page in the status bar. It also allows querying custom services by IP (right mouse button) and hostname (left mouse button), like whois, netcraft. Additionally you can copy the IP address to the clipboard. This exten
If you are using IPv6 from a network location that doesn't support IPv6 routing your DNS lookups may be very slow. Set network.dns.disableIPv6 to true as a workaround (bug 417689)
<sep/>production environment both listen to the same vhost. You will have probably noticed that it takes Firefox a while to pick up on the alterations you made.
Enter about:config in the adress bar. Right click on the list of properties, select new > integer in the context menu enter network.dnsCacheExpiration as the preference name and 0 as the integer value