ICMP Echo Request

[vagrant@ps app]$ ./bin/pstack ping -c 4 192.0.2.1
12:41:44.210 [I] icmp packet sent:     seq=0, id=25390
12:41:44.211 [E] ethernet address was not found: ARP_INCOMPLETE
12:41:44.211 [I] arp cache entry was renewed
                 spa: 192.0.2.1
                 sha: e2:20:76:2d:5d:2d
12:41:44.311 [W] icmp packet sent (dead letter): id=25390, seq=0
12:41:45.312 [I] icmp packet received: seq=0, id=25390
12:41:46.313 [I] icmp packet sent:     seq=1, id=50141
12:41:46.314 [I] icmp packet received: seq=1, id=50141
12:41:47.315 [I] icmp packet sent:     seq=2, id=17217
12:41:47.316 [I] icmp packet received: seq=2, id=17217
12:41:48.317 [I] icmp packet sent:     seq=3, id=40519
12:41:48.319 [I] icmp packet received: seq=3, id=40519