catch up wtih r175955 by ume:

- the support of AI_ALL and AI_V4MAPPED has been completely removed.

lib/libc/net/getaddrinfo.3

@@ -126,13 +126,11 @@ field to which the
 parameter points shall be set to zero
 or be the bitwise-inclusive OR of one or more of the values
 .Dv AI_ADDRCONFIG ,
-.Dv AI_ALL ,
 .Dv AI_CANONNAME ,
 .Dv AI_NUMERICHOST ,
-.Dv AI_NUMERICSERV ,
-.Dv AI_PASSIVE ,
+.Dv AI_NUMERICSERV
 and
-.Dv AI_V4MAPPED .
+.Dv AI_PASSIVE .
 .Bl -tag -width "AI_CANONNAMEXX"
 .It Dv AI_ADDRCONFIG
 If the
@@ -141,19 +139,6 @@ bit is set, IPv4 addresses shall be returned only if
 an IPv4 address is configured on the local system,
 and IPv6 addresses shall be returned only if
 an IPv6 address is configured on the local system.
-.It Dv AI_ALL
-If the
-.Dv AI_ALL
-bit is set with the
-.Dv AI_V4MAPPED
-bit, then
-.Fn getaddrinfo
-shall return all matching IPv6 and IPv4 addresses.
-The
-.Dv AI_ALL
-bit without the
-.Dv AI_V4MAPPED
-bit is ignored.
 .It Dv AI_CANONNAME
 If the
 .Dv AI_CANONNAME
@@ -218,30 +203,6 @@ loopback address if
 is the null pointer and
 .Dv AI_PASSIVE
 is not set.
-.It Dv AI_V4MAPPED
-If the
-.Dv AI_V4MAPPED
-flag is specified along with an
-.Fa ai_family
-of
-.Dv AF_INET6 ,
-then
-.Fn getaddrinfo
-shall return IPv4-mapped IPv6 addresses
-on finding no matching IPv6 addresses (
-.Fa ai_addrlen
-shall be 16).
-The
-.Dv AI_V4MAPPED
-flag shall be ignored unless
-.Fa ai_family
-equals
-.Dv AF_INET6 .
-Note: this flag is currently
-.Em not
-supported, see the
-.Sx BUGS
-section.
 .El
 .El
 .Pp
@@ -490,18 +451,6 @@ freeaddrinfo(res0);
 .%B "Proceedings of the freenix track: 2000 USENIX annual technical conference"
 .%D June 2000
 .Re
-.Sh BUGS
-The
-.Nm
-function as implemented in
-.Fx
-currently does not support
-.Dv AI_ALL
-and
-.Dv AI_V4MAPPED
-flags and returns
-.Dv EAI_BADFLAGS
-if one of them is specified.
 .Sh STANDARDS
 The
 .Fn getaddrinfo