PF_LOCAL
#define PF_UNIX PF_LOCAL /* backward compatibility */
{ PF_LOCAL, 0, ANY, ANY, NULL, 0x01 },
sock = socket(PF_LOCAL, SOCK_STREAM, 0);
sock = socket(PF_LOCAL, SOCK_STREAM, 0);
sock = socket(PF_LOCAL, SOCK_STREAM, 0);
sock = socket(PF_LOCAL, SOCK_STREAM, 0);