AIX : Modify client network configuration

Hello.

AIX 6.1.7 on server and client Networker.

Networker 7.6.4.5

We did an "AIX" clone operation of a server to another. Everything was cloned (Networker client too).

Sometimes, we have this message with the backup of this client (but not at at every backup) :

39077:save: error, Host name verification failed - unknown host: 192.168.XXX.XX, please check reverse lookup entry for this machine on your name server

5777:save: Cannot open save session with XXXXX

I think I checked all things on the server and on the client, but it seemes I forgot something. All resolution are made by /etc/hosts files, which are both OK (on client and on the server).

I also tried to uninstall and resinstall the client, unsuccessfully.

Is there any information stored into networker configuration ?

Thank you for your help.

Steph