The road forward for systemd

Well....DNS maybe isn't a very good example here. Having a DNS socket *exist* isn't particularly useful. If it takes more than 5 seconds to respond, it might as well not bother responding at all, because the client will have given up. And, the resolver library on the client will retry at least once, so even without systemd opening the socket ahead of time, if the system manages to startup Bind in < 5sec, the retry will succeed and everyone will be happy.