-----BEGIN PGP SIGNED MESSAGE----- On Thu, 21 Sep 2000, Christian Pernegger wrote:
> > What they are saying is that a machine *should* never recieve a packet that > > has originated from outside the machine, yet claims (by way of the source > > IP) to have originated from that machine? > > Exactly. A packet arriving on an eth interface comes from outside. > I always thought that a packet destined to the host itself would > arrive on the loopback interface, no matter what. Volume 1 of Rich Stevens' TCP/IP Illustrated indicates that your thinking is correct. It's in section 2.7, where the book discusses the loopback interface. I'll quote from the book for bit here: ___ Datagrams sent to a broadcast address or a multicast addresss are copied to the loopback interface and sent out on the Ethernet. This is because the definition of broadcasting and multicasting includes the sending host. - --- So, were we to take the Stevens book as gospel, then it seems like Linux is doing something wrong here. I don't know if this is documented anywhere or not. noah _______________________________________________________ | Web: http://web.morgul.net/~frodo/ | PGP Public Key: http://web.morgul.net/~frodo/mail.html -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 5.0i for non-commercial use Charset: noconv iQCVAwUBOcocj4dCcpBjGWoFAQHeBwP+KLxtEk+vsVWS/Y+dEJ5hK/zKrTRh5Tqj xMIaIJ2NMYVq1nvAn5jOlF2r6kGC6/UEmFiN8QDm5vkEt+zRTlfMXf4vtJq7ptfx DX9YpBZRm/HR1VBfbU4RqciT51ZcWFhK8SWkYpVt6m6MdpIMS4/1L9QNLNg1uQ1r ayxu9r+d7Tc= =76P1 -----END PGP SIGNATURE-----
