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[Christoph Harder <c_harder AT arcor.de>]

Hello Eric,

thank you for your fast reply.

Today I checked again, even when I open the link to update my dynamic dns entry in my browser the 
IP doesn't seem to change 
(http://api.opennicproject.org/ddns/<DOMAIN>?user=<USER>&auth=<TOKEN>  of 
course with DOMAIN, USER and TOKEN replaced by the appropriate values).

The site http://be.libre/ showed a different IP for the dynamic dns entry.
My router as well as multiple "what is my ip"-sites showed a different ip 
from the one that be.libre showed.

On be.libre I tried to disable the site and enable it again. However now it 
is not showing any ip address at all on be.libre

In addition to this, when I try to open the link to update the ip I get a "Not 
Found  The requested URL was not found on this server.", if I remenber correctly 
in the past when I set this up I did get another reply.

I tried to use nslookup and the dns servers 78.47.243.3 and 62.210.180.71, 
both returned the wrong address and if I'm not mistaken nslookup doesn't 
cache if a server is given.

Hope you have any suggestions what the problem might be.

Best regards,
Christoph

Am 05.01.2021 um 15:14 schrieb Erich Eckner:
> On Tue, 5 Jan 2021, Christoph Harder wrote:
>
> > Hello everybody,
>
> Hi Christoph,
>
>
> > I hope this is the correct list for this topic. I'm using .dyn-addresses for 
> > multiple places which have non-static addresses.
> > However even when updating the address regularly (every 10 Minutes) the 
> > address update sometimes takes a long time (sometimes hours, sometimes days).
> > Is this related to the way the updates are handled or does the dns 
> > propagation cause this delay?
>
> The old adress will stay valid in (caching) resolvers, until the TTL expires.
>
> > Is there any way to improve the time that is required between an update and 
> > using this address to access the correct ip?
>
> lower the TTL to a reasonable level: too low, and you won't use the cache 
> much, but ask the authoritative server more (which is slower); too high, and 
> you will see the behaviour, which you currently notice.
>
> I would suggest a value of several 5 minutes (depending on how long you're willing to 
> wait for an updated ip to get "through").
>
> btw: this is a general dns "issue", not really related to opennic - but I'm 
> still happy to help :-)
>
>
> > Best regards,
> > Christoph
>
>
> regards,
> Erich
>
>
>
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