sstosin
port = ntohs(sstosin(&addr->address)->sin_port);
port = ntohs(sstosin(&addr->address)->sin_port);
sin4 = sstosin(ss);
if (sstosin(ss)->sin_addr.s_addr == INADDR_ANY)
port = ntohs(sstosin(ss)->sin_port);
maskp = &sstosin(&ap->a_mask)->sin_addr.s_addr;
addrp = &sstosin(&ap->a_addr)->sin_addr.s_addr;