Use arping utility to check for presence of device.

bryan 97367a314b test push from chip		2020-12-27 18:53:28 +00:00
arp-check	test push from chip	2020-12-27 18:53:28 +00:00
arp-timing.sh	initial commit	2020-12-27 00:43:55 -06:00
old-arp-check.sh	change file names	2020-12-27 12:11:41 -06:00