Round-Robin and dynamic update

[JUL]

Hello, English is not my first language, so I will do my best to explain.

I have a domain, let's called domain1.net.
In domain1.net, I have 2 host:
host type points at id
www.domain1.net DYN x.x.x.x #1000001
www.domain1.net DYN y.y.y.y #1000002

So when i try to resolve www.domain1.net, obtain both ip (x.x.x.x and y.y.y.y).

Ok, now if I try to update the one who have id #1000002 (y.y.y.y) with this command:
https://dynamic.zoneedit.com/auth/dynamic.html?host=www.domain1.net&dnsto=z.z.z.z&id=1000002
the host with # id1000002 is updated (with z.z.z.z), but the host with id #1000001 is removed...

When the hosts are setting has type=A, no problem. But, according to the faq:

"#2: If You Update an Hostname / A Record dynamically it will become a type "DYN" record
This was done to preserve backwards compatibility with existing domains and clients. You can still manually edit or modify a DYN record like any other kind of A record."

So, setting the type as "A" is not a solution to me.

Is there a problem with record type DYN and round robin?
¡Thanks for your help!

 

[markjr]

In all the years I've been in the DNS business, this is the first time I've ever seen somebody trying to update a round robin record via Dynamic DNS. It's not easy because it keys on the hostname.

I'll have to think about this for a bit. This wasn't supported on the old system was it?

 

[JUL]

Sorry, I don't know if it wasn't supported, I didn't use at that time.
Let's explain a little more to clarify things.

host type points at id
www.domain1.net DYN x.x.x.x #1000001
www.domain1.net DYN y.y.y.y #1000002

Ip x.x.x.x provide to us through DSL ISP provider.
Ip y.y.y.y provide to us through Cablemodem ISP provider.

So, what I tried it to do is: when my DSL provider went down, automatically change the first record to the ip of Cablemodem ISP:

host type points at id
www.domain1.net DYN y.y.y.y #1000001
www.domain1.net DYN y.y.y.y #1000002

And when DSL provider comes up put the ip x.x.x.x again in the id #1000001

Is this a strange solution for an automatic update on temporary broken links?
Thanks!

 

[markjr]

It sounds like what you really want is failover DNS, which works from the server side and runs 1 credit per month. That would do exactly what you want.

 

[jdoering]

Came here looking for round robin dynamic DNS (not server-side failover DNS). Looks like the old platform did specifically support this - see Item 19 in your legacy FAQ: https://www.zoneedit.com/faq.html.

Doesn't seem like it would be too hard to implement if you either do some magic on the server-side so that two names can be defined as being mapped to one composite name (but ultimately an A record not a CNAME):

www-cable.domain1.net -> www.domain1.net
www-dsl.domain1.net -> www.domain1.net

Then the Dynamic client would update the non round-robin name while the backed would also update the derivative round-robin name. Alternatively you could add junk to the updates "dsl#www.domain1.net" vs "cable#www.domain1.net" to indirect from the real name (assuming '#' is not part of a legal DNS name here - otherwise some other char). But that might run afoul of some client's configuration validation logic.

Anyway; I was hoping this was supported given the FAQ but then realized it appears to be tied to specific details of the obsolete system.

 

[Mark Jeftovic (#fb)]

You're not the first to ask for it. What was the actual parameter for the "internal ID" named when using this on the old system?

 

[jdoering]

Mark, actually came across the FAQ and this thread just yesterday. I have had an account with Zoneedit for a long time but had not explicitly leveraged this feature on the legacy platform. So I don't know any more than you about what the IP address page described in the FAQ would have showed in terms of an "internal ID".