[44net] amprgw stats

I've spent the last few hours adding some instrumentation (various counters) to the ipip daemon. Here's a sample of some of the data I now have available. This is a work in progress. The counters are packets/bytes. - Brian started at Thu Apr 27 22:51:19 2017 uptime: 0+00:08:41 15940/8895013 encapped input 13516/8414203 forwarded out 0/0 no source gateway 158252/9266766 raw input 159062/9316591 encapped out 0/0 no destination gateway 1613 discarded 0 ttlexceeded 614 routes (614 ipip, 0 udpip) loaded 521 seconds ago at Thu Apr 27 22:51:19 2017