specification and documented in
.Dv "RFC 3493" ,
.Dq Basic Socket Interface Extensions for IPv6 .
.Sh BUGS
The getaddrinfo function as implemented in FreeBSD currently does not support
.Dv AI_ALL
and
.Dv AI_V4MAPPED ,
and returns
.Dv EAI_BADFLAGS
if you specify one of them.