On Nov 11, 2014, at 13:54 , Jens Alfke wrote: > >> On Nov 11, 2014, at 9:59 AM, Quinn The Eskimo! <eski...@apple.com> wrote: >> >> o reachability saying "no" doesn't guarantee that the connection will fail > > Can you elaborate on that? It's the part I don't understand. As I said above, > I thought that a "no" meant the IP routing tables were telling me "you can't > get there from here." In what cases would there be a false negative?
"Reachability" is at best a hint. You can't tell whether a remote site is reachable without actually trying to reach it. The routing table only gives you the address of the next hop (and rarely does it "know" that the next hop is working correctly). It doesn't tell you about the hop after that or the one after that. HTH Justin -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds ----------- I'm beginning to like the cut of his jibberish. ----------- _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/archive%40mail-archive.com This email sent to arch...@mail-archive.com
