Point domain name of my zone to name in somebody else's zone?
dot at dotat.at
Thu May 8 09:40:57 UTC 2014
Dave Warren <davew at hireahit.com> wrote:
> DNSMadeEasy calls this an "ANAME" record, internally they just lookup the
> destination's IP and cache it, updating it as needed.
> It works, but it would be nice if this could be done in DNS. Sadly, it can't,
> and probably won't in our lifetimes.
Never say never :-)
You can implement something ANAME-alike with a script that polls the
A and AAAA records at the target name and does a DNS UPDATE on the owner
as necessary, but that might not scale too well.
There are a couple of difficulties with implementing ANAME inside the
Firstly it implies a weird authoritative/recursive hybrid. A bit ugly but
Secondly, and more importantly, is the question of how this works with
zone transfers and secondaries. How do you ensure they support ANAME
records? Do you include a backwards compatibility hack by adding the A and
AAAA records to the zone?
f.anthony.n.finch <dot at dotat.at> http://dotat.at/
Thames, Dover, Wight, Portland, Plymouth: Southwest 5 to 7, occasionally gale
8 in Thames, Dover and Wight. Moderate or rough. Rain or showers. Moderate or
good, occasionally poor at first.
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