I've found that on windows + linux environment, after DHCP synchronization all linux DNS record are missing. FYI, it only happen on DNS record for clients with DHCP IP assignment. DNS record for linux client with reservation works perfectly.

On another lab environment, I found that all DNS record for clients with DHCP IP assignment disappear on synchronization phase (both windows and linux).

Im using suse linux 9.3 for client and windows 2003 R2 for DHCP server, AD + DNS server.

Looks like this process happen during import phase. I've tried :

"netsh dhcp server import backupfile.txt"

and after that suddenly all DNS record for linux client with DHCP IP assignment got disappeared.

To overcome this problem I setup scheduled task to rename dhcp.mdb to dhcp_backup.mdb on C:\windows\system32\dhcp about 3 minutes (or more) before synchronization period on secondary DHCP server. Another approach is by simply deleting dhcp.mdb on that directory. After synchronization, DHCP server will rebuild the database using the information from primary DHCP server's backup.

Why I choose 3 minutes? Sometimes synchronization phase on secondary server running ahead of time. For example, I setup 15:15 using DHCP Redundancy config, but it runs on 15:13. I don't know why, but it happen several times on my lab.

Stefan, if you can make this process runs integrated with DHCP sync on secondary server and see what happen with the execution time bug, that would be awesome.

Thanks

Hi, I will take a look at this problem in the next version.

I'm having a very similar issue, but no linux involved. Basically, every time the service runs the import, several (not all) DNS entries are removed from the zone file. I will try achmadi's workaround and report back.

I can confirm this problem occurs between just two Windows 2003 servers (no Linux) and also that achmadi's workaround works. Thanks.

This will be fixed in next version that are coming soon.

You can now download version 1.5, the problem should be solved in this version.

Works for me, thanks very much for all your work on this.
Almost hard to believe that this functionality is not part of Windows servers by default...