res_send: Avoid spurious close()s and (rare) failure

When looping over the current list of sockets we are connected to,
use getpeername() not getsockname() to find out who the remote
end is.  This change avoids spurious close() and (rare) failure.

Origin: ISC bug #18625 and fixed in libbind 6.0

Change-Id: I5e85f9ff4b98c237978e4bf4bd85ba0a90d768e6
1 file changed