我小白，只有第二个能ping通，正常不？ Stevens-MacBook-Air:~ Steven$ ping 199.91.73.222 PING 199.91.73.222 (199.91.73.222): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 ^Z [3]+ Stopped ping 199.91.73.222 Stevens-MacBook-Air:~ Steven$ ping 178.79.131.110 PING 178.79.131.110 (178.79.131.110): 56 data bytes 64 bytes from 178.79.131.110: icmp_seq=0 ttl=45 time=371.472 ms 64 bytes from 178.79.131.110: icmp_seq=1 ttl=45 time=306.751 ms 64 bytes from 178.79.131.110: icmp_seq=2 ttl=45 time=385.611 ms 64 bytes from 178.79.131.110: icmp_seq=3 ttl=45 time=403.375 ms 64 bytes from 178.79.131.110: icmp_seq=4 ttl=45 time=420.791 ms 64 bytes from 178.79.131.110: icmp_seq=5 ttl=45 time=338.698 ms 64 bytes from 178.79.131.110: icmp_seq=6 ttl=45 time=358.588 ms 64 bytes from 178.79.131.110: icmp_seq=7 ttl=45 time=309.159 ms 64 bytes from 178.79.131.110: icmp_seq=8 ttl=45 time=313.347 ms 64 bytes from 178.79.131.110: icmp_seq=9 ttl=45 time=420.936 ms 64 bytes from 178.79.131.110: icmp_seq=10 ttl=45 time=345.122 ms 64 bytes from 178.79.131.110: icmp_seq=11 ttl=45 time=362.778 ms ^Z [4]+ Stopped ping 178.79.131.110