Firefox cached DNS entries. You cant clear firefox dns cache but you can disable firefox dns cache. There are 2 ways of disable firefox dns cache.
1st method to disable firefox dns cache is to install the DNS cache plugin.
- Download and install DNS Cache add on for firefox
- Right click on your “Home” button at Firefox and click on “Customize”
- Look for the “DNS Cache” button and drag it beside your “Home” button, and click “Done”
- Now your Firefox has “DNS Cache” button beside the “Home” button.
- Whenever you want to disable the firefox DNS cache, just click the “DNS Cache” button.
2nd way to disable firefox cache is thru manual editing.
- Start your Firefox, enter “about:config” at the location bar and press enter. If you are using Firefox 3 then u’ll see a warning page, just click “I’ll be careful, i promise” button.
- U’ll see a lot of record, just right click at the blank place and select “New” -> “Integer”
- Enter “network.dnsCacheExpiration” as the preference name and “0” as the integer value
- Right click and select “New” -> “Integer” again
- This time enter “network.dnsCacheEntries” as preference name and “0” as integer value
- Done, you just disable the firefox dns cache