From 5eae41c6d8d3b15ceb65c0328d98aeb74b7701dd Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Wed, 22 Dec 2010 11:42:44 +0100
Subject: [PATCH] Fail silently when trying to convert IPv6 address to v4
 family host

---
 src/libstrongswan/utils/host.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libstrongswan/utils/host.c b/src/libstrongswan/utils/host.c
index 50e43d992..ffeebd05c 100644
--- a/src/libstrongswan/utils/host.c
+++ b/src/libstrongswan/utils/host.c
@@ -476,6 +476,10 @@ host_t *host_create_from_dns(char *string, int af, u_int16_t port)
 	{
 		return host_create_any_port(af ? af : AF_INET6, port);
 	}
+	if (af == AF_INET && strchr(string, ':'))
+	{	/* do not try to convert v6 addresses for v4 family */
+		return NULL;
+	}
 
 	memset(&hints, 0, sizeof(hints));
 	hints.ai_family = af;