Oracle Solaris 11.4 Tunable Parameters Reference Manual Internet Protocol Suite Tunable Parameters IP Tunable Parameters _forwarding_src_routed Parameter (IPv4 or IPv6) _forwarding_src_routed Parameter (IPv4 or IPv6) Description Controls whether IPv4 or IPv6 forwards packets with source IPv4 routing options or IPv6 routing headers. Default Off Range Off or On Dynamic? Yes When to Change Keep this parameter disabled to prevent denial of service attacks. Commitment Level Unstable