On Apr 3, 6:38 am, "lostlander" <lostlander....@gmail.com> wrote:
> Why most TCP/IP implementations are designed to allow sending packets
> whose src IP or Mac adderss is not the sender's real address?! In my
> opinion, this causes many problems, especially lead to some virus.

What is a "real address"? How can you tell a "real address" from some
other kind of address.

DS