mongodb/support-tools — pull request #19 by braz (2014-12-14 16:04:30+00:00)
Title: Added ip_neigh - ip neigh check

Interesting blog (http://engineering.clever.com/2014/12/10/when-your-ip-traffic-in-aws-disappears-into-a-black-hole/) pointed out that ARP tables in AWS can be cached and reflect stale MACs from non-current boxes. Added ip neigh check to highlight STALE or REACHABLE states.