Got error with Debian Bullseye jon2allen@lamp2c$ ping www.yahoo.com ping: socket: Operation not permitted to allow all users to ping again echo “0 2147483647” > /proc/sys/net/ipv4/ping_group_range to make permanent echo “net.ipv4.ping_group_range = 0 2147483647” >> /etc/sysctl.conf Here is where it is documented https://lore.kernel.org/lkml/20110518174959.GA6019@albatros/ https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt
