I am a Security Engineer and I am in charge of the upgrading of the Authentication Manager from version 8.1 SP1 patch 15 to version 8.3 patch 3. The upgrading is going to happen first in a clone machine of the original Authentication Manager in a isolated environment, therefore we changed the IP from eth0. The problem is the iptable erased completely, is this normal?, Is this an automatic procedure do it by the authentication manager? and how can I restore the iptable?. Thank you very much.