Modify anything in about:config so that firefox becomes more tolerant to slow dns servers, before emmiting 'server not found'. I'm using OpenNIC servers for privacy, and i need to repeatedly hit ctrl+r before website loads. It is clear to me that firefox has a very small waiting period before deciding that a 'server was not found' ie. dns server was slow to respond. I don't want to use another dns server because either my privacy will be compromised or it's slow. No proxies, firewall, etc are a problem. My router caches dns queries, but some entries like facebook have very small TTL values like 1-2min which makes you go to the remote dns server periodically, with the above mentioned problems. I looked up dns in about config, but nothing seems relevant. So can we make firefox a little more patient?