IPV6 Socket Address Structure

IPV6 Socket Address Structure

struct in6_addr{

unit8_t sa_addr[16];

};

#define Sin6_len

struct sockaddr_in6{

unit8_t Sin6_len;

sa_family_t sin6_family;

in_port_t Port;

unit32_t Sin6_flowinfo;

struct IN6_ADDR sin6_addr;

Unit32-t sin6_scope_id;

};

If the system supports length fields in the socket address structure, then the Sin6_len constant must be defined

The address cluster of the IPV6 is Af_inet6, and IPv4 's address cluster is af_inet

The order of the fields in the structure is arranged so that if the SOCKADDR_IN6 structure is 64-bit aligned, the 128-bit SIN6_ADDR field is also 64-bit aligned

The Sin6_flowinfo field is divided into 2 fields:

Low-order 20-bit is stream high-order 12-bit reserved

IPV6 Socket Address Structure