cli: add tunnel interface stats to cli #146
Description
It is useful to include stats (interface counters) in the doublezero client which could come from another interface stats tool like vnstat or ip -s link or something like that.
doublezero stats doublezero0
(i recognize that stats is maybe too close to status but you'll come up with something)
would give you the output of ip -s link or vnstat for the doublezero0 interface
basically something that shows tx and rx: bytes packets errors dropped missed mcast
if it had a live mode so the operator could see the metrics change as they add stuff that'd be great.
to future proof, support multiple tunnel interfaces
doublezero stats doublezero0 clear
would clear the counters...
doublezero stats doublezero0 history
would how a historical view of bytes perhaps ...?