Works fine against whatever runs on freenode, and the version that comes with Ubuntu (1.0.36-8 or thereabouts). I think it’s good to have “nullidentd” installed: that might reduce the delay between “NOTICE AUTH :*** Checking ident” and “:localhost. 001 rudybot :Welcome to the Debian …”
Since it doesn’t emit “NICK” or “USER” until the server emits a NOTICE … but since the server doesn’t emit anything until we authenticate … we get hung up on, and keep retrying endlessly.
I was too lazy to figure out how to configure it, so I don’t know.
As described at http://freenode.net/seven.shtml.
Untested. That page says the plan is for freenode to switch to ircd-seven at the end of January, 2010.