[dns-operations] Do Unix stubs round robin nameserver addresses?

[Roland Dobbins]

On 18 Apr 2015, at 5:44, Chuck Anderson wrote:

> 2. Use anycast to make your multiple DNS servers appear as one IP, and
>  put that one IP in /etc/resolv.conf.  You can have multiple IPs,
>  but each one should still be anycasted.

The problem with using only one IP is that if someone accidentally 
fat-fingers an ACL or a routing statement or a firewall rule or 
whatever, all recursive DNS is hosed.

So, anycasting *two* IP addresses (on differing netblocks) is probably 
warranted.

-----------------------------------
Roland Dobbins <rdobbins at arbor.net>