Comment 5 for bug 68503

No you need to *remove* the package

This is a package of bonjour - apples implementation, obviously the Avahi compatability layer for Bonjour (DNSSD) would conflict with this, hence the failed install

And because bonjour is not an official ubuntu package (e.g. not in the ubuntu archives) we haven't told the avahi package to Conflict with it (which would have made the packaging system remove it for you if you tried to install it manually)