traceroute to brain.kaist.ac.kr (199.36.158.100), 25 hops max, 60 byte packets
 1  10.0.0.1 (10.0.0.1)  0.031 ms
 2  142.251.51.78 (142.251.51.78)  4.479 ms
 3  *
 4  199.36.158.100 (199.36.158.100)  4.446 ms