Apologies for not doing this earlier. We resolved this issue 2 weeks ago. It turned out to be a faulty Management module on a Synoptics 3000 Chassis which kept randomly intercepting responses to DHCP renewal requests from DHCP clients. It has since been shut down.
Hi ShackDaddy and Myllz
Thanks for your responses.
There are a number of tools available on the Internet (e.g. DHCPExplorer - a gui app) and Microsoft's own dhcploc.exe (a command line app), which is part of the Windows Support Tools package. Essentially, they mimic DHCP clients and display...
Hi Myllz, did your solution to remove PTR records work?
We have a similar problem. What happens is when some DHCP clients renew leases, a conflict occurs. After a while the DHCP issues the client a new address even though the original lease has not expired, but DNS does not update properly. In...
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