I just noticed that lost pings are hidden. It was irritating enough that ping now requires elevation.
jamsignal$ ping 10.133.1.1ping: Lacking privilege for raw socket.jamsignal$
jamsignal$ sudo ping 10.133.1.1PING 10.133.1.1 (10.133.1.1): 56 data bytes64 bytes from 10.133.1.1: icmp_seq=0 ttl=254 time=69.707 ms64 bytes from 10.133.1.1: icmp_seq=1 ttl=254 time=68.789 ms64 bytes from 10.133.1.1: icmp_seq=4 ttl=254 time=79.188 ms64 bytes from 10.133.1.1: icmp_seq=6 ttl=254 time=48.910 ms64 bytes from 10.133.1.1: icmp_seq=7 ttl=254 time=67.357 ms64 bytes from 10.133.1.1: icmp_seq=8 ttl=254 time=68.787 ms64 bytes from 10.133.1.1: icmp_seq=9 ttl=254 time=77.702 ms64 bytes from 10.133.1.1: icmp_seq=10 ttl=254 time=59.172 ms64 bytes from 10.133.1.1: icmp_seq=11 ttl=254 time=68.638 ms64 bytes from 10.133.1.1: icmp_seq=12 ttl=254 time=89.859 ms^C--- 10.133.1.1 ping statistics ---13 packets transmitted, 10 packets received, 23% packet lossround-trip min/avg/max/stddev = 48.910/69.811/89.859/10.544 msjamsignal$
Update: I had installed inetutils to get telnet and ftp on High Sierra. That is what broke my ping.