Reload of Susefirewall on ip-down

Hello, I am using Susefirewall on my dialup-maschine with dial on demand. If the connection goes down the firewall rules get reloaded and my connections from the internal network are blocked while reloading the rules, sometimes my SSH-Session get interrupted. The reload takes up to 30 seconds (Maschine P200, 160MB Ram) Why are the rules reloaded. How can I prevent the rules from reloading or which changes have I to do that my connections won't be interrupted? Regard, Rüdiger Kasten