You still have supermicro10foaxfij4.poweredbyclear.com pointed to a system called Supermicro and has no activity in the DDNS system. The system using 93.4.165.249 is called home.bensali.net and has a different DDNS subdomain (not stated for privacy reasons).

If you really wanted to recover that DDNS, you **may** be able to do it by logging onto the portal and changing the DDNS name for Supermicro which should free up the name for use on home.bensali.net (no guarantees though).

Hi Nick,

Thanks for this info.
I guess this does not raise any isue for me as my IP doesn't change for years...

I've change my DNS to the new subdomain. It's simplier.
You could remove supermicro10foaxfij4
I gues it's a previous install of ClearOS i've made years ago...

Or let me know how I can remove it.

Thanks I understand now how the issue arise.

Hi Nick,

Default domain : poweredbyclear.com

My previous DDNS was : supermicro10foaxfij4.poweredbyclear.com
And now my subdomain is pointing to my FQDN without any dot.

I did not change my clearos server just my isp so my IP :
Automatic IP update 93.4.165.249 Nov 5, 2020 15:57:28
Automatic IP update 5.51.5.30 Oct 26, 2020 10:52:28

A dynamic DNS A RECORD with this domain/URI currently exists

Hi,

I've changed ISP how ever the IP haven't been updated to DynDNS service.
When I whant to update it, as "subdomain" has changed I get this error :
A dynamic DNS A RECORD with this domain/URI currently exists

Why can't I retrieve my previous original subdomain ?

Thanks ind avance for you guidance/help.

Thanks I'll think of that...

No, I mean that the service is open only on LAN IP and not on External IP. like SSH or FTP

All service are not available from external IP. Some are exclusively accessible from LAN IP.
With one IP I can no longer do that.


I need to connect to ISP router to enable DHCP that use router's DNS
I need Clear OS DNS in order to assign logical name to my LAN equipements (thing I can't do with ISP's router).


DHCP server is done by Clear OS. When Clear OS is down, I need to activate ISP's router DHCP.

your WAN subnet is part of your LAN subnet?

Yes Overlap
External


LAN


As my LAN should work with or without Clear OS I need to be able to access 10.0.0.138.
I need ClearOS DNS and DHCP as my ISP's router doesn't have all required features...

Recieveing this arpwatch message is not an issue.
The reason I recieve it is what I'm looking