Round-robin, NSD and multiple IPs - Pleast Test!

If you visit the following URL, what does the location show?

http://test.blite.ca/

me@home:~$ host test.blite.ca
test.blite.ca has address 204.12.214.x
test.blite.ca has address 78.129.133.y

I'd thought that multiple IPs for an A record were used in round-robin fashion. But for me, using NSD for DNS hosting, it seems to be dependent on the order they appear in the zonefile, and on whether caching DNS servers respect that order. It seems that most do.

So the great majority of traffic will arrive at the first IP listed in NSD's zonefile.