[dns-operations] Multiple NS records vs multiple A records per NS

Ask Bjørn Hansen ask at develooper.com
Sun Jun 3 21:02:20 UTC 2012

On Mar 22, 2011, at 14:13, Simon Munton wrote:

> We recently ran a test of having multiple anycast address records for a single NS and the traffic to each IP was pretty much the same.

Thanks Simon.

I see the same; not counting IPv6 then it seems like the common resolvers just aggregate all the IPs that are NS'es for the domain and then do their picking from that.

It seems like for domains without regular/proper upstream glue records this could save a few A/AAAA lookups by batching them by name.



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