-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi , Everybody , I am on the list for a month , everytime I saw your question and answers , I just want to reproduct your enviroment and trouble , and then slove it . But your troubles almost occur in the very complicated enviroment such as two router with four LANs and a PPP interface and etc. How can I simulate such a condition ? I have thought about do it using VMWare , but I need many vms , and my system can't afford such a load ! Is there any software to achive such a task ? Thank you ! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFNylj7tZp58UCwyMRAswLAKDb6M51SSCwdTzZEkE/RE0Iwt4s0ACfUnqf YDVevTQAXnzCK0WJJuCHxPY= =8cfF -----END PGP SIGNATURE-----