> On Feb 8, 2016, at 9:45 PM, Glenn L. Austin <gl...@austinsoft.com> wrote:
> 
> According to the docs on Reachability (possibly lost in the mists of 
> time...), Reachability isn't really designed to tell you whether your net 
> access *will* succeed, but to give you reasons that your last access *failed.*

It’s not that surprising. There’s no guarantee that any IP packet will make it 
across the network, and no way to tell whether a host really is reachable 
without actually sending a packet to it (and back.) So the only way 
Reachability could tell you an access *will* succeed would be if it were 
constantly pinging the server, which is obviously impractical.

All Reachability tells you is whether there is an active network interface that 
can be used to route a packet one hop toward the desired host.

—Jens
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