Address Structure(2)

• IPv6 socket address structure

• struct sockaddr_in6 {

• sa_family_t sin6_family; /* AF_INET6 */

• in_port_t sin6_port; /* port number */

• uint32_t sin6_flowinfo; /* flow information */

• struct in6_addr sin6_addr; /* IPv6 address */

• uint32_t sin6_scope_id; /* Scope Identifier */

• };

  • Used in (most of) socket API
  • AF_INET6
    • IPv6 address family number
    • In most systems, PF_INET6 is defined as AF_INET6
  • IPv6 address alligned on 64-bit boundary
  • Flow information and spope information

Notes: