Oracle Solaris 11.4 Tunable Parameters Reference Manual Internet Protocol Suite Tunable Parameters IP Tunable Parameters _respond_to_echo_broadcast (IP) and _respond_to_echo_multicast Parameters (IPv4 or IPv6) _respond_to_echo_broadcast (IP) and _respond_to_echo_multicast Parameters (IPv4 or IPv6) Description Controls whether IP responds to a broadcast ICMPv4 echo request or a multicast ICMPv4 or ICMPv6 echo request. Default 1 (enabled) Range 0 (disabled) or 1 (enabled) Dynamic? Yes When to Change If you do not want this behavior for security reasons, disable it. Commitment Level Unstable