| in6_addr | General purpose IPV6 address | 
| in_addr | General inet socket address. | 
| linger | Record used in setsockopt | 
| PIn6Addr | Pointer to  in6_addr  type. | 
| pin6_addr | Pointer to Tin6_addr | 
| PInAddr | Alias for pin_addr | 
| PInetSockAddr | Pointer to sockaddr_in | 
| PInetSockAddr6 | Pointer to sockaddr_in6  type | 
| pin_addr | Pointer to in_addr  record. | 
| plinger | Pointer to linger  type. | 
| psockaddr | Pointer to TSockAddr | 
| PSockAddr6 | Pointer to TSockAddr6 | 
| psockaddr_in | Pointer to sockaddr_in | 
| psockaddr_in6 | Pointer to sockaddr_in6 | 
| psockaddr_un | Pointer to sockaddr_un  type. | 
| sa_family_t | Address family type | 
| sockaddr | Alias for TSockAddr  record type. | 
| sockaddr_in | Internet socket address record | 
| sockaddr_in6 | Alias for sockaddr_in6 | 
| sockaddr_un | Unix socket address record. | 
| TIn6Addr | Alias for in6_addr  type. | 
| Tin6_addr | Alias for sockaddr_in6 | 
| TInAddr | Alias for in_addr  record type. | 
| TInetSockAddr | Alias for sockaddr_in | 
| TInetSockAddr6 | Alias for sockaddr_in6 | 
| TIn_addr | Alias for in_addr  record type. | 
| TLinger | Alias for linger | 
| TSockAddr |  | 
| TSockAddr6 | Alias for sockaddr_in6/> | 
| TSockArray | Type returned by the FPSocketPair  call. | 
| Tsocket | Alias for easy kylix porting | 
| TSockLen | Type to specify socket length in fpBind and fpConnect | 
| TSockPairArray | Array of sockets, used in FPSocketPair  call. | 
| TUnixSockAddr | Alias for sockaddr_un |