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Packet sockets: Difference between revisions
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The IP_HDRINCL (IPV6_HDRINCL) option is not support for IPv6 raw sockets. | The IP_HDRINCL (IPV6_HDRINCL) option is not support for IPv6 raw sockets. | ||
===SOCK_RAW=== | ===SOCK_RAW=== | ||
Path MTU is performed on outgoing packets unless disabled via IP_MTU_DISCOVER sockopt, in which case they might be fragmented if they exceed the outgoing device's MTU (unless IP_HDRINCL is used). Fragment reassembly is performed before delivering packets to receiving sockets. | Path MTU is performed on outgoing packets unless disabled via IP_MTU_DISCOVER sockopt, in which case they might be fragmented if they exceed the outgoing device's MTU (unless IP_HDRINCL is used). Fragment reassembly is performed before delivering packets to receiving sockets. sendto() must be used with raw sockets, as opposed to a mere send(). When using an IPv6 raw socket, sin6_port must be set to 0 to avoid an EINVAL ("Invalid Argument") error. | ||
===SOCK_PACKET=== | ===SOCK_PACKET=== | ||
Obsolete since Linux 2.0. | Obsolete since Linux 2.0. | ||
