Problem on round robin DNS

[Calvin Ching]

A round robin DNS is configured to return two IP
addresses of a domain name,
e.g. www.abc.com. It is supposed that it can return
the IP in strictly round
robin fashion like the following:

IP1, IP2
IP2, IP1
IP1, IP2
IP2, IP1
...

However, we found that it is not strictly following
this sequence. It
sometimes returns like this:

IP1, IP2
IP2, IP1
IP2, IP1
IP1, IP2
IP1, IP2
IP2, IP1
...

I would like to ask if this is the behavior of the DNS
or is there any
problem in the DNS configuration? We are using BIND v8
on Solaris 2.7.

Regards,
Calvin


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