.Pp
The field
.Ar sa_len
-contains the total length of the of the structure,
+contains the total length of the structure,
which may exceed 16 bytes.
The following address values for
.Ar sa_family
(and additional formats are defined for possible future implementation):
.Bd -literal
#define AF_UNIX 1 /* local to host (pipes) */
-#define AF_INET 2 /* internetwork: UDP, TCP, etc. */
+#define AF_INET 2 /* IPv4: UDP, TCP, etc. */
+#define AF_INET6 30 /* IPv6: UDP, TCP, etc. */
#define AF_NS 6 /* Xerox NS protocols */
#define AF_CCITT 10 /* CCITT protocols, X.25 etc */
#define AF_HYLINK 15 /* NSC Hyperchannel */