After getting IPv6 working,I also wanted to move all my IRC connections over to SSL, because I think you should use secure protocols wherever possible. The easiest way to do this is to edit the ~/.irssi/config file – here’s an example for OFTC:
{
address = "irc.oftc.net";
chatnet = "OFTC";
port = "6697";
use_ssl = 'yes';
ssl_verify = 'yes';
},
Sadly, there doesn’t appear to be a way to tell irssi to always use SSL, instead you have to enable it for each server entry.