pkg_add -r avahi-app
Fetching ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6.3-release/Latest/avahi-app.tbz... Done.
avahi:*:558:
You already have a group "avahi", so I will use it.
pw: user 'avahi' already exists
Adding user "avahi" failed...
pkg_add: install script returned error status