From 2ff1db7b4ef1f96adc6af2a669bccf3b49435a88 Mon Sep 17 00:00:00 2001
From: Thomas Roessler <roessler@does-not-exist.org>
Date: Sun, 4 Mar 2001 10:57:50 +0000
Subject: [PATCH] Make it possible to enable ipv6 at run time.

---
 init.h        | 7 +++++++
 mutt.h        | 3 +++
 mutt_socket.c | 7 ++++++-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/init.h b/init.h
index 73b69b13..efc92333 100644
--- a/init.h
+++ b/init.h
@@ -2146,6 +2146,13 @@ struct option_t MuttVars[] = {
   ** generated unless the user explicitly sets one using the ``$my_hdr''
   ** command.
   */
+  { "use_ipv6",		DT_BOOL, R_NONE, OPTUSEIPV6, 1},
+  /*
+  ** .pp
+  ** When \fIset\fP, Mutt will look for IPv6 addresses of hosts it tries to
+  ** contact.  If this option is unset, Mutt will restrict itself to IPv4 addresses.
+  ** Normally, the default should work.
+  */
   { "user_agent",	DT_BOOL, R_NONE, OPTXMAILER, 1},
   /*
   ** .pp
diff --git a/mutt.h b/mutt.h
index 620c26e6..1d3065bf 100644
--- a/mutt.h
+++ b/mutt.h
@@ -382,6 +382,9 @@ enum
   OPTUSE8BITMIME,
   OPTUSEDOMAIN,
   OPTUSEFROM,
+#ifdef HAVE_GETADDRINFO
+  OPTUSEIPV6,
+#endif
   OPTWAITKEY,
   OPTWEED,
   OPTWRAP,
diff --git a/mutt_socket.c b/mutt_socket.c
index d653b9d5..4a950820 100644
--- a/mutt_socket.c
+++ b/mutt_socket.c
@@ -318,7 +318,12 @@ int raw_socket_open (CONNECTION* conn)
 
   /* we accept v4 or v6 STREAM sockets */
   memset (&hints, 0, sizeof (hints));
-  hints.ai_family = AF_UNSPEC;
+
+  if (option (OPTUSEIPV6))
+    hints.ai_family = AF_UNSPEC;
+  else
+    hints.ai_family = AF_INET;
+
   hints.ai_socktype = SOCK_STREAM;
 
   snprintf (port, sizeof (port), "%d", conn->account.port);
-- 
2.40.0