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-rw-r--r--sysdep/bsd/sysio.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/sysdep/bsd/sysio.h b/sysdep/bsd/sysio.h
index 95f7dcf..f0b5f40 100644
--- a/sysdep/bsd/sysio.h
+++ b/sysdep/bsd/sysio.h
@@ -241,6 +241,8 @@ sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
#ifndef IPV6
+#ifdef IP_MINTTL
+
static int
sk_set_min_ttl4(sock *s, int ttl)
{
@@ -257,7 +259,18 @@ sk_set_min_ttl4(sock *s, int ttl)
return 0;
}
-#else
+#else /* no IP_MINTTL */
+
+static int
+sk_set_min_ttl4(sock *s, int ttl)
+{
+ log(L_ERR "IPv4 TTL security not supported");
+ return -1;
+}
+
+#endif
+
+#else /* IPv6 */
static int
sk_set_min_ttl6(sock *s, int ttl)