Исправление Eshkin_kot, (текущая версия) :
https://stackoverflow.com/questions/8290046/icmp-sockets-linux
This only works if a special sysctl is set. By default not even root can use this kind of socket. To allow root (group 0) to use ICMP sockets, do:
sysctl -w net.ipv4.ping_group_range="0 0"
Исходная версия Eshkin_kot, :
https://stackoverflow.com/questions/8290046/icmp-sockets-linux
This only works if a special sysctl is set. By default not even root can use this kind of socket. To allow root (group 0) to use ICMP sockets, do:
sysctl -w net.ipv4.ping_group_range=«0 0»