Mac OS X: Troubleshooting a cable modem, DSL, or LAN Internet connection

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LEARN ABOUT ULTRIX

inet

inet(4f)																  inet(4f)

Name
       inet - Internet protocol family

Syntax
       #include <sys/types.h>
       #include <netinet/in.h>

Description
       The  Internet  protocol family is a collection of protocols that is layered on the Internet Protocol (IP) transport layer and that uses the
       Internet address format.  The Internet family provides protocol support for the SOCK_STREAM, SOCK_DGRAM, and SOCK_RAW  socket  types.   The
       SOCK_RAW interface provides access to the IP protocol.

Addressing
       Internet  addresses  are  4-byte  quantities,  stored in network standard format.  The include file defines this address as a discriminated
       union.

       Sockets bound to the Internet protocol family use the following addressing structure:
       struct sockaddr_in {
	    short     sin_family;
	    u_short   sin_port;
	    struct    in_addr sin_addr;
	    char sin_zero[8];
       };
       Sockets may be created with the address INADDR_ANY to effect ``wildcard'' matching on incoming messages.

Protocols
       The Internet protocol family comprises the IP transport protocol, Internet Control Message Protocol (ICMP), Transmission  Control  Protocol
       (TCP),  and  User Datagram Protocol (UDP).  TCP is used to support the SOCK_STREAM abstraction, while UDP is used to support the SOCK_DGRAM
       abstraction.  A raw interface to IP and ICMP is available by creating an Internet socket of type SOCK_RAW.

See Also
       tcp(4p), udp(4p), ip(4p)

																	  inet(4f)

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