Ping now works to loopback

There is still a semantic issue of some sort, as you will see if you
ping 127.0.0.1

sometimes we read 2 echos as one. I'm pretty sure I got qio semantics
right but this result seems wrong. Or it's just a bug that we never
hit.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>