* public.senfcall.de/ * github.com/jitsi/jitsi-meet/wiki/Jitsi-Meet-Instances
[thunderbird] DNS-Cache
bugzilla.redhat.com/show_bug.cgi?id=795109
about:config values in Thunderbird can be found in Menu, Edit -> Preferences -> Advanced -> General tab -> Config Editor button.
network.dns.disablePrefetch = true network.dnsCacheExpiration = 0