On Wed, Jan 07, 2004 at 02:04:36PM -0500, John A. Sullivan III wrote: > > Thank you very much but could you please explain this a bit more. The whole TTL concept is meant to deal with the routing loops. Just imagine what happens if there is a routing loop between your gateway and the ISP's upstream router. The packets would be bouncing back and forth forever (until your gateway is rebooted) and the throughput of your bandwidth would drop to +-zerro. Now if you anticipate no routing loop (which is extremely unlikely in the current architecture of how the ISP's do business) you should be fine. However, these routing loops could happen when people start mixing the TTL-increments with MIRROR: http://www.netfilter.org/security/2001-08-22-mirror.html Ramin