af_icmp

$ ll /usr/bin/ping
-rwxr-xr-x. 1 root root 61K ago  3  2017 /usr/bin/ping
$ ping -c1 192.168.85.1
PING 192.168.85.1 (192.168.85.1) 56(84) bytes of data.
64 bytes from 192.168.85.1: icmp_seq=1 ttl=64 time=0.492 ms

--- 192.168.85.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.492/0.492/0.492/0.000 ms
$ getcap /usr/bin/ping
/usr/bin/ping = cap_net_admin,cap_net_raw+p
$ sudo setcap -r /usr/bin/ping
$ ping -c1 192.168.85.1
ping: socket: Operation not permitted
$ sudo sysctl -w net.ipv4.ping_group_range='0 1000'
net.ipv4.ping_group_range = 0 1000
$ ping -c1 192.168.85.1
PING 192.168.85.1 (192.168.85.1) 56(84) bytes of data.
64 bytes from 192.168.85.1: icmp_seq=1 ttl=64 time=0.500 ms

--- 192.168.85.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.500/0.500/0.500/0.000 ms
$