| INCOMPATIBILITIES: | 
 |  | 
 | - The REJECT target has an '--reject-with admin-prohib' option which used | 
 |   with kernels that do not support it, will result in a plain DROP instead | 
 |   of REJECT.  Use with caution. | 
 |   Kernels that do support it: | 
 |   	2.4 - since 2.4.22-pre9 | 
 | 	2.6 - all | 
 |  | 
 | - There are some issues related to upgrading from 1.2.x to 1.3.x on a system | 
 |   with dynamic ruleset changes during runtime. (Please see  | 
 |   https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=334). | 
 |   After upgrading from 1.2 to 1.3, it suggest go do an iptables-save, then | 
 |   iptables-restore to ensure your dynamic rule changes continue to work. |