DNS Round Robin Handling

Hi List,
I was wondering, how does Necko (if thats the proper layer) handle DNS
round robin.
If it hits a webserver which resolves but times out, will it automatically
fail over to the other IP?
What are the stats for the timeout?

PS - I think using only DNS round robin as a failover method is a pisspoor
idea, unless you manage your own DNS.

Cheers,
Z