1 files changed, 9 insertions, 7 deletions

diff --git a/src/lib/libc/net/res_init.3 b/src/lib/libc/net/res_init.3
index 01a6b8e0b3..f9f13cf4f9 100644
--- a/src/lib/libc/net/res_init.3
+++ b/src/lib/libc/net/res_init.3
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: res_init.3,v 1.1 2019/08/30 18:33:17 deraadt Exp $
+.\"     $OpenBSD: res_init.3,v 1.2 2020/04/25 14:30:05 jca Exp $
 .\"
 .\" Copyright (c) 1985, 1991, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 30 2019 $
+.Dd $Mdocdate: April 25 2020 $
 .Dt RES_INIT 3
 .Os
 .Sh NAME
@@ -180,12 +180,14 @@ In the past, it turned off the legacy
 .Ev HOSTALIASES
 feature.
 .It Dv RES_USE_INET6
-Enables support for IPv6-only applications.
-This causes IPv4 addresses to be returned as an IPv4 mapped address.
+With this option
+.Xr gethostbyname 3
+will return IPv6 addresses if available.
+On some operating systems this option also causes IPv4 addresses to be
+returned as IPv4-mapped IPv6 addresses.
 For example, 10.1.1.1 will be returned as ::ffff:10.1.1.1.
-On
-.Ox
-this option does nothing.
+IPv4-mapped IPv6 addresses are not supported on
+.Ox .
 .It Dv RES_USE_EDNS0
 Attach an OPT pseudo-RR for the EDNS0 extension,
 as specified in RFC 2671.